Effects on the yield and fiber quality components of Bt cotton inoculated with Azotobacter chroococcum under elevated CO2

文献类型： 外文期刊

第一作者： Li, Zhuo

作者： Li, Zhuo;Gao, Min;Liu, Rujie;Chang, Chunyan;Ge, Feng;Li, Zhuo;Ge, Feng;Gao, Min

作者机构：

关键词： Azotobacter chroococcum; Bt cotton; Elevated CO2; Fiber quality; Yield

期刊名称：PEERJ （ 影响因子：2.7； 五年影响因子：3.1 ）

ISSN： 2167-8359

年卷期： 2023 年 11 卷

页码：

收录情况： SCI

摘要： Background: The raising trend of cultivation of Bacillus thuringiensis (Bt)-transgenic cotton is faced with a new challenge what effects on the growth and yield of Bt cotton under elevated CO2.Methods: Rhizobacteria is the significant biological regulator to increase environmental suitability and ameliorate soil-nitrogen utilization efficiency of crops, especially Bt cotton. Pot-culture experiments investigated the effects on the yield and fiber quality components of Bt cotton (transgenic Line SCRC 37) inoculated with Azotobacter chroococcum (AC) under elevated CO2.Results: The findings indicated that the inoculation of azotobacter significantly improved the yield and fiber quality components of Bt cotton, the elevated CO2 significantly increased the soil density of A. chroococcum and the partial yield indexes (as cottonweightper 20 bolls, lint yield per 20 bolls and boll number per plant), and non-significant decrease the fiber quality components of Bt cotton except uniform.Discussion: Overall results obviously depicted that the inoculation of azotobacter and the elevated CO2 had positive effects on the yield and fiber quality components of Bt cotton. Presumably, azotobacter inoculation can be used to stimulate plant soil-nitrogen uptake and promote plant growth for Bt cotton under elevated CO2 in the future.

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