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Copyright of Journal of Anhui Agricultural Sciences is the property of Journal of Anhui Agricultural Sciences 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 Southwest China Journal of Agricultural Sciences is the property of Editorial Department of Southwest China Journal of 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 Northwest A & F University - Natural Science Edition is the property of Editorial Department of Journal of Northwest A&F University (Natural Science Edition) 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 Agricultural Science & Technology (1008-0864) is the property of Journal of Agricultural Science & 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 Acta Agriculturae Zhejiangensis is the property of Acta Agriculturae Zhejiangensis 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 Agricultural Science & Technology (1008-0864) is the property of Journal of Agricultural Science & 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 Journal of Agricultural Science & Technology (1008-0864) is the property of Journal of Agricultural Science & 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 Journal of Agricultural Science & Technology (1008-0864) is the property of Journal of Agricultural Science & 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 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 Agricultural Science & Technology (1008-0864) is the property of Journal of Agricultural Science & 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 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 Acta Agronomica Sinica is the property of Crop Science Society of China 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 Agricultural Science & Technology (1008-0864) is the property of Journal of Agricultural Science & 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 Journal of Agricultural Science & Technology (1008-0864) is the property of Journal of Agricultural Science & 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 Journal of Agricultural Science & Technology (1008-0864) is the property of Journal of Agricultural Science & 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.)

[Objective] The content of organic acid and neutral aroma components and the interrelation between them were studied in chopping main vein flue-cured tobacco. [Method] A heated air circulation standard curing barn was used for baking tobacco leaves, and the correlation of the content of neutral fragrant with organic acid was analyzed by SPSS20.0. [Result] Through baked in chopping the main vein, the total amount of neutral aroma components was increased by 44. 64 % than that of conventional baking, and the contents of the most other neutral aroma components were increased than that of conventional baking. The total contents of organic acid were increased by 15. 10 % , among which fumaric acid, butanedioic acid, malic acid and citric acid contents were increased than that of conventional baking, and the other organic acid contents were decreased. The correlation analysis showed that the organic acid content with all kinds of neutral aroma components or the content of neutral aroma constituents had very significantly or significantly positive correlation. [ Conclusion] Aroma quantity and quality was higher than that of conventional baking, and the other sensory quality evaluation index basically reached the same level. The way baked in chopping main vein improved the aroma and flavor of flue-cured tobacco leaves. [ABSTRACT FROM AUTHOR]

The effects of applying different types of organic fertilizer on neutral aroma component contents of upper and central leaves were studied with Zhongyan100 as the sample using randomized blocks design，and the data by using variance analysis，significance test and other methods were analyzed. The result showed that T2 resulted in the highest content of neophytadiene(1025.76 μ/g) in upper leaves，while T5 resulted in the highest content of neophytadiene (1322.02 μ/g) in middle leaves and also resulted in the greatest total carotenoid catabolites in all positions，the content of aromatic AA catabolites and cembratriendiol catabolites in two positions was the highest，and the greatest (24.76 μ/g) the total of mail lard reaction in upper leaves. Sensory smoking results indicated that T5 was the best in all of the treatments. After taste of their pure aroma，adequate aroma and comfortable，the T5 was more effective than other treatments to increase the content and harmony of aroma components. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Agricultural Science & Technology (1008-0864) is the property of Journal of Agricultural Science & 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 Journal of Agricultural Science & Technology (1008-0864) is the property of Journal of Agricultural Science & 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 Journal of Agricultural Science & Technology (1008-0864) is the property of Journal of Agricultural Science & 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.)

Residues level and degradation danamics of acetamiprid 3 % ME and 70 % acetamiprid water dispersible granules in tobacco leaves and soil under open fields and green houses conditions were analyzed and determined by LC-MS/MS. The results showed that: the halflives of acetamiprid 3 % ME EC in tobacco leaves and soil were 3. 26( open fields),5.52 d( green houses) and 4.71( open fields), 6.62d( green houses) days respectively; The half-lives of 70 % acetamiprid Water dispersible granules in green houses was relatively long, and in tobacco leaves and soil they were 4.61( open fields), 6.27 d( green houses) and 5. 72( open fields), 7.70 d( green houses) respectively, original accumulation and residues of two formulations mospilan under field were lower than those under green houses, and the degradation rate under field was faster than green houses. The final residue experiment indicated that on the 14 thday after the last application two different formulations, the highest residue of acetamiprid was 0.74 mg/kg, and in accordance with recommended dose and using times, the residue level was lower. It was suggested to apply acetamiprid by recommended dose and using times, and the safe interval was 14 days. [ABSTRACT FROM AUTHOR]

To investigate the mechanism involved in the different responses of flue-cured tobacco leaf senescence to light qualities, the interaction effects of different lights on plastid pigment metabolism and activities of antioxidant enzymes in the maturation of flue-cured tobacco leaves were investigated.Taking Yunyan 87( Ntcotiana tobacum L.) as test material, by covering red, white, blue, yellow and purple polyethylene films above tobacco plants to obtain different light quality. Results indicated that plastid pigments were degradating and translating after topping. Compared with natural light, red and white light significantly inhibited the degradation of chlorophyll. White and blue light inhibited the degradation of caroteniods. Sequence of pigment degradation rate under different lights during declined stage was blue > yellow > purple > red > white > nature light. The activities of antioxidant enzymes in leaves demonstrated the trend of increased first and then decreased. Yellow and red light increased the activities of antioxidant enzymes, and made the content of MDA at a relatively low level. In contrast, purple and blue light decreased the activities of antioxidant enzymes and led to higher contents of MDA in the leaves. In summary, red light treatment contributed to accumulation, and blue light treatment contributed to degradation. Yellow and red light could maintain high levels of antioxidant enzymes and delay aging of flue-cured tobacco leaves. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Agricultural Science & Technology (1008-0864) is the property of Journal of Agricultural Science & 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 Southwest China Journal of Agricultural Sciences is the property of Editorial Department of Southwest China Journal of 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 Chinese Journal of Pesticide Science / Nongyaoxue Xuebao is the property of Chinese Journal of Pesticide Science 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.)

Bijie flue-tobacco leaves were selected as the experimental materials to explore the free amino acids content of flue-cured tobacco and its relationship with the sensory evaluation at different altitudes. The results showed that (i) The content of total free amino acids as well as all kinds of free amino acids in flue-cured tobacco presented a decreasing trend as the altitude increased. At different altitudes, the free amino acid of the highest level was pro line, and the free amino acid of maximum variation coefficient was methionine. At the same time, arginine and glutamic acid contents had significant differences among three elevations. (ii) The sensory evaluation score of tobacco samples at different altitudes was in order of high altitude > mid-elevation > low altitude. Especially in aroma quality, the score of high altitude was better than that of mid-elevation and low altitude. Score of smoking aroma quality and aftertaste had significant differences among three elevations. (iii) At high altitude, a lot of free amino acids and sensory indicators reached significant correlation. The correlation of free amino acid contents and sensory evaluations was most close at high altitude, followed at mid-altitude and low altitude minimum. The sensory indicators of mid-elevation and low altitude which suffered greater impact of the kind of free amino acids were more similar, but there were large differences between mid- low altitude and high altitude. It was concluded that the amino acid content and the sensory quality of tobacco were affected by different altitudes. [ABSTRACT FROM AUTHOR]