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Copyright of Nuclear Safety is the property of Nuclear & Radiation Safety Center and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

To meet the requirements of developing high head and huge capacity hydropower plants, this paper proposes a new Pelton turbine that joints three runners by one vertical shaft to have a rated head of 1 000 m and a single unit capacity close to 800 MW. The design concept of increasing capacity by increasing the number of runners and the structural components of the new turbine-generator unit are explained, the theoretical design parameters of the runner are calculated and presented, the performance characteristics and the flow patterns in runner and casing are predicted and optimized by CFD simulation. The results show that the rated operating efficiency of the turbine can reach 87%, and the operating characteristic curves are smooth for different heads and outputs, the water splashing interference in the casing is an important factor affecting the efficiency of the turbine. By optimizing the layout of the runners and nozzles in the casing to suppress the splashing interference, the efficiency level, torque oscillation, and operation stability of the Pelton turbine can be improved. This preliminary attempt has demonstrated the feasibility of the concept and also found the importance of optimizing the water splashing in the casing, which has reference values for further researches. [ABSTRACT FROM AUTHOR]

This experiment was conducted to study the effects of different doses of γ-aminobutyric acid (GABA) on mutton sheep. The experimental animals were 120 similar month old Du Han hybrid sheep, randomly divided into 4 groups: control group and experimental group 1 (60 mg/kg GABA), test group 2 (100 mg/kg GABA), test group 3 (140 mg/kg GABA), pre feeding period of 3 days, experimental period of 30 days. The growth performance, serum biochemical, antioxidant and immune indexes, were detected in this experiment. The results showed that: ① the average daily weight gain of group 2 and group 3 was significantly higher than that of control group (P<0.05), and the feed intake of group 2 and group 3 was significantly higher than that of control group (P<0.05). The feed weight ratio of group 2 and group 3 was significantly lower than that of control group (P<0.05). ② Compared with control group, the serum total protein (TP) and albumin (ALB) contents of the group 2 and group 3 were significantly increased (P< 0.05), while the activities of aspartate aminotransferase (AST), alanine aminotransferase (ALT), and urea nitrogen (BUN) content were significantly reduced (P<0.05). ③The total antioxidant capacity (T-AOC) in the serum of groups 1, 2, and 3 were significantly increased (P<0.05), while the activities of superoxide dismutase (SOD) and glutathione peroxidase (GSH-Px) in groups 2 and 3 were significantly increased (P< 0.05). The contents of malondialdehyde (MDA) in the serum of groups 1, 2, and 3 were significantly reduced (P<0.05). ④ The levels of serum immunoglobulin A (IgA), immunoglobulin G (IgG), and in terleukin-2 (IL-2) in group 2 and 3 significantly increased (P<0.05). Comprehensive research results: Adding 100 mg/kg and 140 mg/kg GABA to diet can improve the growth performance, serum biochemical, antioxidant, and immune indicators of mutton sheep. Considering economic costs, the recommended dosage is 100 mg/kg. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Agro-Environment Science is the property of Journal of Agro-Environment Science Editorial Board and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Clean Coal Technology is the property of Clean Coal Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

To explore the effects of different concentrations of melatonin on physiological and photosynthetic fluorescence characteristics of wheat seedlings. The growth morphology, photosynthetic, fluorescence parameters and antioxidant enzyme activity of wheat seedings treated with different concentrations of melatonin were determined by using Liangxing 99 as experimental material. The results were as follows:(1)0.1 μmol·L-1 melatonin treatment significantly increased the photosynthetic capacity of wheat plants, Chlorophyll a(Chl a), Chlorophyll b(Chl b)and Chlorophyll(a+b)[Chl(a+b)] increased to the maximum value when melatonin concentration was 0.1 μmol·L-1. Chlorophyll fluorescence parameters include parameters of quantum yield of regulated energy dissipation Y(NPQ), the electron transport rate(ETR)and non-photochemical quenching(NPQ)also reached the maximum at 0.1 μmol·L-1. The PS Ⅱ maximum photosynthetic efficiency(Fv/Fm)and maximum photochemical conversion potential(Fv/Fo)decreased with the increase of melatonin concentration. Photochemical quenching(qL)decreased first and then increased with the increase of melatonin.(2)Compared with CK(0 μmol·L-1), low concentration of melatonin treatment significantly decreased peroxidase(POD)activity in wheat and decreased catalase(CAT)activity in wheat leaves, high melatonin concentration significantly increased POD activity in wheat. The content of malondialdehyde(MDA)in wheat roots decreased firstly and then increased with the increase of melatonin concentration. In conclusion, it suggests that appropriate melatonin treatment can promote the growth of wheat and maintain the photosynthetic capacity of wheat at a high level, and can also regulate oxidative stress induced by different concentrations of melatonin in wheat seedlings through POD and CAT. This study laid a foundation for further understanding the regulatory mechanism of melatonin in wheat. [ABSTRACT FROM AUTHOR]

[Objective] The study was conducted to evaluate the difference of Cd-As absorption and accumulation by different rice varieties in cadmium (Cd) and arsenic (As) co-contaminated soils, in order to provide theoretical basis for safe production and utilization of rice in the region. [Method] The experiment site was located at Dongchuang district of Kunming city, Yunnan province. A field experiment was used to carry out this investigation; The experiment consisted of ten treatments, including Indica Hybrid Rice (Zhongzheyou 8, Zhongzheyou 10, Zhongzheyou 1, Qingyou 676, Minhongliangyou 177),Conventional Indica Rice (Yunhangjing 3, Yunhanghong 1), Conventional Japonica Rice (Yunhangjing 2, Yunhangjing 3, Yunhangjing 7).Plants were sampled during the mature stage, then rice agronomic traits and Cd-As accumulation characteristics were analyzed in different rice cultivars. [Result] There were significant differences in the agronomic traits and Cd-As accumulation characteristics in different rice cultivars. Among them, the values of maximum rice yield, plant height, 1000-grain weight and seed setting rate were 2.91, 1.17, 1.40 and 1.24 times of their minimum, respectively. The values of maximum biomass shoots and roots were 2.12 and 2.47 times of their minimum, respectively. The values of maximum Cd and As contents in the roots, stems and leaves, chaffs and brown rice were 2.33, 3.50, 1.40 and 4.00 times and 2.03, 3.50, 1.40 and 4.00 times of their minimum, respectively. The values of maximum Cd and As accumulation in the roots, stems and leaves, chaffs and brown rice were 4.45, 3.27, 3.53 and 12.06 times and 2.51, 1.81, 3.02 and 3.70 times of their minimum, respectively. The Cd and As transport coefficient was as the following: TFrice/stem＞TFrice/chaff＞TFstem/root and TFstem/root＞ TFrice/chaff＞TFrice/stem in rice. Among all rice cultivars, Zhongzheyou 8 had high agronomic characters, its brown rice Cd and As accumulation was also high, while Yunhangjing 2 had low agronomic characters, its brown rice Cd and As accumulation was the lowest. Correlation analysis showed that the yield was extremely significantly positively correlated with the brown rice Cd content, while the yield was extremely significantly negatively correlated with the brown rice As content. The brown rice Cd content was extremely significantly positively correlated with TFrice/stem and TFrice/chaff, while the chaffs As content was extremely significantly negatively correlated with TFrice/stem and TFrice/chaff, the brown rice As content was not significantly correlated with TFstem/root, TFrice/stem, and TFrice/chaff and the brown rice Cd content was not significantly correlated with brown rice As content. [Conclusion] In the long-term flooded soil, the Cd activity was low and the As activity was high, but the Cd transport capacity in different parts of rice was higher than that of the As transport capacity of planting hybrid indica rice varieties, Zhongzheyou 8 with high yield was good for growing in soils without heavy metal contamination, while conventional japonica rice Yunhangjing 2 should be used as the best rice variety in Cd and As co-contaminated polluted soils. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Engineering Management / Gongcheng Guanli Xuebao is the property of Journal of Engineering Management Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Rice grain contaminated with elevated cadmium（Cd）in some areas of Southern China is serious, with this problem attributable to some reasons including increasing inputs of Cd into soils, soil acidification, typical water management of paddy soils, and certain varieties of rice grain with a higher Cd accumulation capacity planted in the South. Soil total Cd concentrations are not worse in China than in other regions of the world, but the bioavailability of Cd is higher in Chinese soils. Soil Cd bioavailability varies largely among different regions in China; soils from Hunan Province are generally higher in Cd bioavailability than those from Guangxi and Guizhou. The grain filling is the key period for the accumulation of Cd in the rice grain, with this period concurrent with soil drainage. The remobilization of Cd during this period is mainly controlled by the voltaic effect, free radical oxidation effect and pH-dependent Fe oxide adsorption effect. Amendment of Zn and Mn fertilizers can suppress the oxidative dissolution of CdS during soil drainage through the voltaic effect. Raising soil pH can reduce the partitioning of Cd into the soil solution, thus decreasing soil Cd solubility. Several key genes involved in Cd uptake, translocation, and sequestration in rice have been cloned. Allelic variations of some genes to some extent explain the variations of grain Cd in different cultivars. The Cd-safe rice grain can be achieved by reducing soil Cd bioavailability, decreasing the uptake/translocation of Cd to the grain, and removing Cd from soils. Hence, the use of low Cd rice cultivars, liming, and applications of Zn/Mn fertilizers are particularly effective and economical for producing safe rice in some Cd-contaminated soils. Rice cultivars with the ability to accumulate high Cd can be used as a feasible phytoremediation method for reducing Cd from the soil. [ABSTRACT FROM AUTHOR]

Endophytic fungi in medicinal plants have the capacity to produce bioactive compounds whose features have great identity or similarity with the phytohosts. Since Asclepias curassavica has been known to possess a broad range of biological activities, we sought to obtain the active endophytic fungi from this plant. We performed the study followed the idea of “ethnic drug-endophytic fungi-active ingredients”, and thereafter we examined the bioactivities of fungal metabolites from 168 strains of endophytic fungi isolated from A. curassavica. To evaluate the biological activities of anti-tumor, anti-inflammatory, anti-α-glucosidase and anti-oxidant in these fungi, the ethyl acetate extracts from fermentation broth of endophytic fungi were first determined using the methods of SRB, Griess, PNPG and DPPH, respectively. Furthermore, we identified the bioactive fungal strains with conserved ITS sequencing. The results were as follows:(1) A total of 22 in 168 isolated strains had variable biological activities. Nine strains had obvious anti-tumor effect with the IC50 values of 0.1-40 μg·mL-1. Further, the strain MJF-53 displayed prominent inhibitory effects on the release of both NO and IL-1β in Raw264.7 cell line by LPS- induction under the concentration of 2.5 μg·mL-1. There were seven strains showing α-glucosidase inhibitory activity with the IC50 values ranging from 1.0 to 4.0 mg·mL-1, especially, the inhibitory activities of MYF-16 and MYF-55 were close to acarbose; 19 endophytic fungi had different degrees of DPPH free radical scavenging activities, among which MYF-9, MYF-19 and MJF-84 showed moderate anti-oxidant activities with IC50 values of 13.562, 17.776 and 12.395 μg·mL-1 respectively.(2)The ITS identification showed that the 22 active strains were mainly distribute in six genera: Alternaria sp., Colletotrichum sp., Fusarium sp., Diaporthe sp., Talaromyces sp. and Neofusicoccum sp. This study indicates that the bioactivities of the endophytic fungi from A. curassavica are diverse, which lays a foundation for exploring new potential natural anti-tumor, anti-inflammatory, hypoglycemic and anti-oxidant compounds from the endophytic fungi of A. curassavica. [ABSTRACT FROM AUTHOR]

The Brassica napus(Bn)plantlets in vitro were used as the experimental materials in this study. The sodium nitrate was employed to provide the sole nitrogen source and salt stress. The growth parameters, chlorophyll contents and foliar δ13C of B. napus plantlets were measured in this study. The photosynthetic capacity of B. napus plantlets was estimated by the stable carbon isotope value. The relationship between inorganic nitrogen supply and salt-tolerance of the B. napus plantlets was studied based on the photosynthetic capacity. The results were as follows:(1)The deleterious effect of slight salt stress could be counteracted by 40 mmol·L-1 sodium nitrate, while the deleterious effect of moderate salt stress could be effectively relieved by 80 mmol·L-1 sodium nitrate. However, even if the inorganic nitrogen supply was excessive, the growth of B. napus plantlets was heavily inhibited by the severe salt stress.(2)The chlorophyll contents of B. napus plantlets decreased gradually with increasing salt stress.(3)The photosynthetic capacity of B. napus plantlets reached the maximum under slight salt stress condition. However, the photosynthetic capacity of B. napus plantlets decreased obviously with increasing salt stress. Hence, when the inorganic nitrogen demand is met for plants, the salt-tolerance of plants will depend on the photosynthetic capacity. Excessive inorganic nitrogen supply can not improve the photosynthetic capacity of plants suffered from the severe salt stress. [ABSTRACT FROM AUTHOR]

Copyright of China Rural Water & Hydropower is the property of China Rural Water & Hydropower Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

In order to realize the real-time, continuous and accurate detection of the plant’s CO2 absorption rate in the measurement of plant carbon fixation, in this paper, based on quartz enhanced photoacoustic spectroscopy（QEPAS）, the absorption wavelength of 1 580.039 5 nm in infrared region was selected as the spectrum line to be mearsued, and a plant carbon sequestration measurement and detection system was built, the lower limit of the gas volume fraction detection of the system was 65×10-6. Under the condition of consistent light intensity, temperature and plant growth, the CO2 absorption rate of the Spathiphyllum kochii, Ficus elastica, Chlorophytum comosum and Epipremnum aureum was detected for many times within one hour. The relative error between the daily carbon sequestration per unit leaf area and the reference value in the literature was less than 7 %, which proved that the QEPAS-based plant carbon sequestration detection system could detect the CO2 absorption rate of plants in real time and continuously, and estimate the carbon sink capacity of plants. [ABSTRACT FROM AUTHOR]

Copyright of China Brewing is the property of China Brewing Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Ailanthone, a quassinoid isolated from Ailanthus altissima, is a promising candidate for natural herbicides. The herbicidal mechanism of action of ailanthone was preliminarily investigated in this study by the measurement of physiological indicators and germination test in a dish. Ailanthone had no effect on the capacity of seeds water uptake. Ailanthone strongly inhibited plant cells division with a mitotic index of 0.48% at the concentration of 1.00 μg/mL, as compared to 5.85% in the clear water control, and it could cause cell division malformation. Combined information such as enzymes activity assays of superoxide dismutase (SOD), catalase (CAT), peroxidase (POD) activity implied that the antioxidant capacity of plants could be improved by ailanthone. Reactive oxygen species (ROS) staining indicated that the outbreak of ROS could be induced with the concentration of 0.10 μg/mL ailanthone. The results of cell mortality showed that the presence of ailanthone could cause a certain percentage of cell inactivity. Ailanthone showed herbicidal activity by affecting multiple targets. Ailanthone could effectively inhibit plant cells division and the accumulation of ROS. [ABSTRACT FROM AUTHOR]

Copyright of Forest Research is the property of Forest Research Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Henan Agricultural Sciences is the property of Editorial Board of Journal of Henan Agricultural Sciences and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

In order to detect the effects of fertilization and mowing on stoichiometry characteristics of four plant species in an semi-arid steppe in Inner Mongolia. Four plant species including Artemisia frigida, Potentilla tanacetifolia, Aneurotepidimu chinemis, and Melissitus ruthenica in the steppe were collected in August 2014. Contents of carbon, nitrogen and phosphorus, and ratios of C : N and N : P in different plants in field experiment under nitrogen fertilization and mowing treatments were investigated. The effects of nitrogen fertilization and mowing on carbon, nitrogen and phosphorus, and ratios of C : N and N : P were analyzed with ANOV As. The differences of stoichiometry characteristics under different treatments were analyzed with Post-Hoc tests. The results wer'e as follows: Neither nitrogen fertilization nor mowing allowed carbon content in the steppe. Nitrogen fertilization significantly devated the plant nitrogen content (P<0.05), thus decreased the C: N ratio (P<0.05) and increased the N : P ratio (P<0.05). Mowing increased the nitrogen content of Melissitus ruthenica by 0.18% ( P<0.05), decreased the nitrogen content of Aneurotepidimu chinensis by 0.13% (P<0.05), but did not affect the nitrogen content of Aartemisia frigida or Potentilla tanacetifolia. Mowing significantly devaled the phosphorus contents of Artemisia frigida and Potentilla tanacetifolia ( P < 0. 05), but did not affect the phosphorus content of Melissitus ruthenica or Aneruotepidimu chinensis. The study has approved that nitrogen fertilization and mowing can affect the plant stoichiomtry characteristics in the steppe, but the affect varied with species. The results provide data support for the study on plant functional trails in the grassland. [ABSTRACT FROM AUTHOR]

Orchard spray is a key link to orchard production, due to it occupied nearly 25% of the total workload of orchard management. Moreover, the degree of plant protection mechanization directly affects the economic benefits of fruits. In this review, the orchard characteristic, the general situation of plant protection mechanization and the reasons restricting its development were introduced briefly, in order to clarify the future progress of mechanization technology and equipment for the orchard plant protection in China. The main reason impeding the development of plant protection mechanization can be a large proportion of hilly orchards, including gradient, slope and flat orchard, together with a very complex planting environment. Since the standardized modern orchards are being promoted, the scale is still small, due partly to the extensive management in traditional orchards the high price. Currently, the plant protection mechanization level of flat orchard was 15%, whereas, the hilly orchard was only 7.5%. Therefore, the progress of key plant protection mechanization technologies and equipment was presented in detail, further to improve the mechanization level of plant protection. For example, the pipeline spraying technology and equipment brought good benefits and spraying effects to the hilly orchard, while, the application of air-assisted spraying technology and equipment improved the mechanized operation level of the flat orchard. Electrostatic spraying technology and equipment were especially used to enhance the droplet coverage rate on the back of leaves. While the tunnel spraying technology and equipment increased the droplet density on the canopies, to recovery the droplet that left the target, indicating that it can effectively improve the pesticide utilization. Variable rate spraying technology and equipment were becoming a hot research topic, particularly on the precise control of spray on demand. The core technology of variable rate spraying was target detection, such as ultrasonic detection, laser detection, infrared detection, machine vision methods. The ultrasonic and laser detection methods have achieved the best application. Since 2010, the great development and application of aerial spraying technology and equipment have been widely recognized. Especially, the unmanned aerial vehicle (UAV) of rotor plant protection has become one of the most popular machines with small size, fast flight speed and strong terrain adaptability among the agricultural aerial equipment. In this review, the research state of rotor plant protection UAV in orchard was introduced from three aspects: operation model, down wash flow field, and working parameters. Plant protection equipment can offer some suggestions for the development of plant protection mechanization from these aspects: promoting standardized models of orchard plant, developing stereo spraying technology, promoting specialized and mechanical service model of plant protection, thereby for the intelligent robots of plant protection. [ABSTRACT FROM AUTHOR]

【Objective】The present paper aimed to explore the characteristics of nitrogen uptake and utilization of Huanghua under different nitrogen regulation methods. It is of great significance for improving Huanghua’s nitrogen nutrient management. 【Method】The field test method was used to set two levels of conventional nitrogen application(180 kg/hm~2) and reduced nitrogen application(135 kg/hm~2) and different proportions of base, sputum and panicle fertilizers. The effects of nitrogen application rate and nitrogen application rate on plant nitrogen content, nitrogen distribution in plants, biomass, nitrogen uptake and nitrogen use efficiency were studied. 【Result】The order of nitrogen content rate in the whole growth period was as follows by tillering > jointing > heading > filling > maturity, which was consistent with the growth process. Compared with conventional nitrogen application, the yield of Huanghuazhan was the highest(7541.11 kg/hm~2) when the proportion of base, sputum and panicle was 4∶1∶3, which was 7.98 % to 15.88 % higher than other treatments. In addition, total biomass, nitrogen uptake amount, nitrogen agronomic efficiency, partial productivity, nitrogen uptake and utilization were significantly higher than other treatments. Under the conventional nitrogen application level, the nitrogen uses efficiency of different nitrogen treatments ranged from 31.63 % to 35.40 %, while the nitrogen uses efficiency of different nitrogen treatments under the reduced nitrogen application level ranged from 36.68 % to 48.33 %. 【Conclusion】Under the premise of appropriate reduction of the total amount of nitrogen fertilizer and ensuring the availability of suitable effective panicles, the ratio of base, sputum and panicle fertilizer is 4∶1∶3, which is beneficial to improve the dry matter accumulation and nitrogen uptake amount of Huanghuazhan in the middle and late growth stages, improve the nitrogen utilization rate and provid guarantee for high yield. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Henan Agricultural Sciences is the property of Editorial Board of Journal of Henan Agricultural Sciences and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

[Objective (The efects of diferent soil water contents on the growth and physiological indexes of Tabebuia chrysantha seedlings were studied in order to provide a reference basis for its daily maintenance and management and expanding the scope of introduction in Guan- gxi. ' Method】 Taking the one-year-old T. chysniha seedlings as the research objects，its growth and physiological indexes were measured under the culture matrix with soil water holding capacity of 100 '，80 '，60 ' and 40 ' field capacity of culture medium，and its adapta¬bility to different soil water contents was analyzed. ' Result】 With the decrease of water content in culture matrix，plant height increased， aboveground biomass，Chi a content，Chi b content，carotenoids content，Chlorophyll content，soluble sugar content，soluble protein content and POD activity of T. chrysantha seedlings increased first and then decreased，ground diameter increased，total root lengtli，root tijD，under¬ground biomass and biomass all increased，MDA content decreased first and then increased. The resialts showed that the plant height in¬creased ， ground diameter increased，root tif>s，aboveground biomass，underground biomass，biomass，Chl a content，Chi b content，carotenoi(ds content，chlorophyll content，soluble sugar content，soluble protein content，MDA content，and POD activity in seedlings growing on the soil with 60 ' water holding capacity were significantly higher than those on the soil with 100 ' water holding capacity!% <0. 05，the same be¬low). Correlation analysis results showed that there was a significant or extremely significant correlation ( % <0. 01，the same as below). Among the plant height increased，biomass， soluble protein content，ground diameter increased，total root length，root tips，and underground biomass of T. chrysantha seedlings. There was a significant or extremely significant correlation among the aboveground biomass,Chi b content,carotenoi(Js content,soliable sugar content,and soliable protein content；There was a sig- nifican or extremely significant correlation among the Chi a content,Chi b content,carotenoids content,chlorophyll content,soluble sugar con¬tent, soluble protein content, and MDAcontent. ' Conclusion (Thee wee differences in the effects of different water content of culture matrix on the growth and physiological indexes of 7 chrysantha seedlings, in which the plant height increased, aboveground biomass, Chi a content, Chi b content,carotenoids content, chlorophyll content, soluble sugar content, soluble protein content and POD activity were the best and MDA content was the lowest when the water content in the field was 60 ' . Therefore, when the soil relative water content is 60 ' in culture matrix, soil water content is the most suitable for the growth and development of 7. cCrysantha seedlings. [ABSTRACT FROM AUTHOR]

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Copyright of Shipin Kexue/ Food Science is the property of Food Science Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Forest Research is the property of Forest Research Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

[Objective] It provided reference for the study of pollen morphology and further classification and evaluation of Bletilla. [Methods] The floral characteristics and the morphological characteristics of pollens of three speeies B. striata, B. ochracea and B. formosana by scanning electron microscopic was observed and compared. [ Results] There were no significant differences in floral characteristics among the 3 va-rieties(strains) of B. striata except for floral color and plant height. There were significant differences in plants, pseudohulhs and leaf traits of B. striata, B. ochracea and B. formosana, it could be distinguished the three species qualitatively and quantitatively through the floral characteristics. There was no significant difference in the appearance of pollen in three speeies, hut there was significant difference in pollen length between B. striata and B. ochracea, and there were no significant differences in pollen length and width between B. ochracea and B. formosana. Though the electron microscope of 12000 times magnification, it was found that the outer wall of pollen had obvious reticular veins in B. striata, and the ornamentation of B. ochracea was densely connected into pieces, while the ornamentation of B. formosana was fragment-shaped and small, round or irregular shapes were separated from each other. [Conclusion] The floral characteristics and the outer wall and ornamentation of pollen could lie used as the classification standard in Bletilla. There was no significant difference in floral characteristics among the 3 varieties (strains) of B. striata. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Agro-Environment Science is the property of Journal of Agro-Environment Science Editorial Board and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Henan Agricultural Sciences is the property of Editorial Board of Journal of Henan Agricultural Sciences and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Harbin Institute of Technology. Social Sciences Edition / Haerbin Gongye Daxue Xuebao. Shehui Kexue Ban is the property of Harbin Institute of Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Clean Coal Technology is the property of Clean Coal Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

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In order to elucidate the material basis of S. parviflora, the constituents of S. parvuflora were separated and purified with chromatographic methods and recrystallization. The structures were elucidated by chemical analyses and spectroscopic methods. Twelve compounds were isolated from the leaves of S. parviflora, and they were identified as N-trans-feruloyl tyramine (1), N-cis-feruloyl tyramine (2), N-trans-p-coumaroyl tyramine (3), N-cis-p-coumaroyl tyramine (4), N-trans-p-coumaroyl octopamine (5), N-cis-p-coumaroyl octopamine (6), ferulic acid (7), apigenin (8), luteolin (9), caffeic acid (10), fuseine (11), oleanolic acid (12). Compounds 2,4-9 were isolated from the plants of Sabia Colelbr. for the first time. Compounds 1, 3,10 were isolated form the plant for the first time. [ABSTRACT FROM AUTHOR]

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