Search

In order to improve the cuttage propagation coefficient of fresh-eating peanut, the effect of different catting parts and ABT concentration on the cutting growth of fresh-eating peanut was studied by taking Jihuatian No. 1 plant as the test material. The results showed that the survival rate of cutting in different parts of peanut was in the order of the upper part > middle part > lower part. The upper cuttings of peanut plant were treated with five different concentrations of ABT rooting agents, among which the treatment with 150 mg ⋅ L-1 concentration had the best cutting effect and the most vigorous growth vigour. After 40 days of cutting, the survival rate was 83.3%, the average rooting was 12.7, the average root length was 2.85 cm, and the yield reached 3259.04 kg ⋅ hm², which was 148.48% higher than that of the control group with clear water, and the difference was very significant. The correlation detection analysis showed that the rooting number and root length of peanuts were positively correlated with the yield. [ABSTRACT FROM AUTHOR]

In order to screen out the new peanut varieties with high yield, disease resistance and high quality suitable for being planted in the south of China, Zhanyou 75 was used as the control variety to identify the yield, quality and disease resistance of the 10 new peanut strains newly bred in the south of China. The results showed that the pod yield of Haikehua 181 and Fuhua 0945 respectively increased by 39. 66% and 23. 05% compared with that of Zhanyou 75, and the seed kernel yield respectively increased by 43. 79% and 24. 42% compared with that of Zhanyou 75, with extremely significant differences. Compared with Zhanyou 75, the pod yield of Quanhua 1478, Guihua 66 and Shany-ou 121 increased significantly, but the seed kernel yield did not increase significantly, while the pod yield and seed kernel yield of Qianyoufense and Zhanyou 103 did not increase significantly. Qionghua 1104 had higher oleic acid content (70. 12%). The protein content of Heyou 1079 was 29. 43%, which reached the national high protein standard (28%). The drought resistance and flood resistance of all the tested peanut strains were strong, and the disease resistance level was medium. In consideration of the indexes such as the yield, field growth and resistance to disease, Haikehua 181 and Fuhua 0945 showed better overall performance and could be used for the small-scale planting demonstration experimentally. Qionghua 1104 could be used as the parent of high oleic acid material and Heyou 1079 could be used as the parent of high protein material. [ABSTRACT FROM AUTHOR]

[ Objective ]The growth development characteristic and yield of peanut were studied under different mulches in order to provide references for extending high-yield cultivation techniques in peanut production of Fujian Province. [ Method ]The experiment was designed in randomized block with three replications, peanut varieties Quanhua 7 and Quanhua 8 were used for investigating the effects of different mulches viz., ordinary film, photolysis film, straw and bare land (control) on growth and development, and yield of peanut, etc. [ Result ] Ordinary film, photolysis film and straw mulching could shorten the growth duration of peanut, increase plant height and dry matter weight of stem and leaf. Ordinary film and photolysis film mulching could increase germination rate, productivity per plant of peanut, 100-pod weight, pods per plant, plump pods per plant. As compared with the control, the yield of peanut for photolysis film treatment was the highest, which significantly increased by 34.20% and 19.10% (P<0.01) of Quanhua 7 and Quanhua 8, respectively. The next was that of ordinary film treatment, the yield increased by 27.47% (P<0.01) and 16.54% (P<0.05). The yield of straw mulching treatment was decreased by 4.29% and 11.19%, respectively. As compared with the control, the economic benefit of Quanhua 7 and Quanhua 8 increased by 6455 and 11025 RMB Yuan/ha in photolysis film treatment, 5575 and 8790 RMB Yuan/ha in ordinary film treatment, while it decreased by 1640 and 4430 RMB Yuan in straw treatment. [ Conclusion ]Different mulches cultivating for peanut have different merits and demerits, respectively, so suitable cultivation model should be employed according to various environmental conditions to get high yield and benefit. [ABSTRACT FROM AUTHOR]

A comparative proteomics analysis was performed to identify the molecular response of a rice cultivar (Oryza sative cv. 'IRRI71331') with high phosphorous (P) uptake efficiency to low P stress. The hydroponically grown rice plants were provided with two levels of P (0.5 mg·L-1 and 10 mg·L-1) supplied in quarter strength Kimura solution, and the root total proteins extracted on the 3rd and 6th day of treatments were separated by two-dimensional gel electrophoresis (2-DE). Comparing with the control (10 mg·L-1 of P), a total of 29 protein spots under low P stress (0.5 mg·L-1) showed differences in their relative abundance, among which, 17 were higher, 11 were lower, and 1 was novel on the 3rd day, and 8 were induced, 19 were suppressed, 1 was disappeared, and 1 had no obvious change on the 6th day. Ten differentially expressed protein spots were identified by MALDI-TOF/ MS, and searched in protein databases. According to the putative functions, the identified proteins were classified into four groups, i. e. , signal transduction (glycine-rich RNA-binding protein, phosphate starvation response regulator-like), gene expression (putativepre-mRNA splicing factor, putative AAA-metalloprotease), metabolism (adenylosuccinate lyase, serpin, S-adenosylmethionine synthetase, MYB transcription factor-like protein), and ion transport (cation-transporting ATPase, sarcoplasmic reticulum protein). The identified proteins were involved in various physiological responses to enhance stress resistance, such as signal recognition and transduction, RNA cleavage, degradation of denatured protein, and ion transportation and cellular ion balance. The serine protease inhibitor and S-adenosylmethionine synthetase and the MYB transcription factor-like protein, which were the key proteins associated with P deficiency-tolerance of other species, were affected by the same stress for rice. The results indicated that the tolerance to low P stress was controlled by a complex signal transduction and metabolism regulation network in rice root system. [ABSTRACT FROM AUTHOR]

A comparative proteomics analysis was performed to identify the molecular response of a rice cultivar (Oryza sative cv. 'IRRI71331') with high phosphorous (P) uptake efficiency to low P stress. The hydroponically grown rice plants were provided with two levels of P (0.5 mg x L(-1) and 10 mg x L(-1)) supplied in quarter strength Kimura solution, and the root total proteins extracted on the 3rd and 6th day of treatments were separated by two-dimensional gel electrophoresis (2-DE). Comparing with the control (10 mg x L(-1) of P), a total of 29 protein spots under low P stress (0.5 mg x L(-1)) showed differences in their relative abundance, among which, 17 were higher, 11 were lower, and 1 was novel on the 3rd day, and 8 were induced, 19 were suppressed, 1 was disappeared, and 1 had no obvious change on the 6th day. Ten differentially expressed protein spots were identified by MALDI-TOF/MS, and searched in protein databases. According to the putative functions, the identified proteins were classified into four groups, i.e., signal transduction (glycine-rich RNA-binding protein, phosphate starvation response regulator-like), gene expression (putative pre-mRNA splicing factor, putative AAA-metalloprotease), metabolism (adenylosuccinate lyase, serpin, S-adenosylmethionine synthetase, MYB transcription factor-like protein), and ion transport (cation-transporting ATPase, sarcoplasmic reticulum protein). The identified proteins were involved in various physiological responses to enhance stress resistance, such as signal recognition and transduction, RNA cleavage, degradation of denatured protein, and ion transportation and cellular ion balance. The serine protease inhibitor and S-adenosylmethionine synthetase and the MYB transcription factor-like protein, which were the key proteins associated with P deficiency--tolerance of other species, were affected by the same stress for rice. The results indicated that the tolerance to low P stress was controlled by a complex signal transduction and metabolism regulation network in rice root system.