Effects of Transgenic Drought-resistant Cotton on Enzyme Activities and Available Nutrients Content in Soil

doi:10.11924/j.issn.1000-6850.casb16010131

Chinese Agricultural Science Bulletin ›› 2016, Vol. 32 ›› Issue (12): 77-83.doi: 10.11924/j.issn.1000-6850.casb16010131

Special Issue: 生物技术；棉花

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Effects of Transgenic Drought-resistant Cotton on Enzyme Activities and Available Nutrients Content in Soil

Zhao Xiaodan^1,2, Zhao Jianning², Hong Yu¹, Li Gang², Xiu Weiming², Luo Junyu³, Yang Dianlin²

(¹College of Life Science and Technology, Inner Mongolia Normal University, Hohhot 010022;²Agro-Environmental Protection Institute, Ministry of Agriculture, Tianjin 300191; ³Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang Henan 455000)

Received:2016-01-26 Revised:2016-04-13 Accepted:2016-03-18 Online:2016-04-27 Published:2016-04-27

Abstract

Abstract: The objective of this study is to investigate the effect of planting drought-resistant transgenic cotton and conventional cotton during different growth stages on soil enzyme activities and available nutrient content. By applying the method of chemical analysis and solvent extraction method, the soil enzyme activities and available nutrient content of the two kinds of cotton were compared and analyzed. Results demonstrated that at seedling stage, soil available phosphorus content of drought-resistant transgenic cotton was significantly lower than that of conventional cotton, soil ammonium nitrogen and nitrate nitrogen content and urease activity of drought-resistant transgenic cotton were markedly higher as compared with that of conventional cotton, while at other 4 growth stages, no evident difference was found in their contents and activities; soil alkaline phosphatase and catalase activities showed no obvious difference in 5 different growth stages. The correlation analysis of soil enzyme activities and available nutrient content revealed that soil ammonium nitrogen content was significantly and positively correlated with soil urease activity, while it was significantly and negatively correlated with soil alkaline phosphatase activity; soil available phosphorus and soil total nitrogen presented an extremely and significantly negative correlation; soil nitrate nitrogen content showed a significantly negative correlation with soil alkaline phosphatase activity while a significantly positive correlation with soil ammonium nitrogen content. In conclusion, planting drought-resistant transgenic cotton did not affect the available nutrient content and soil enzyme activity. However, the available nutrient content and soil enzyme activity were different in different growth stages of cotton.

Zhao Xiaodan,Zhao Jianning,Hong Yu,Li Gang,Xiu Weiming,Luo Junyu and Yang Dianlin. Effects of Transgenic Drought-resistant Cotton on Enzyme Activities and Available Nutrients Content in Soil[J]. Chinese Agricultural Science Bulletin, 2016, 32(12): 77-83.

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Effects of Transgenic Drought-resistant Cotton on Enzyme Activities and Available Nutrients Content in Soil

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