Physio-morphological and biochemical mechanism of nitrogen use efficiency in sugarcane (Saccharum spp.) genotypes under different growth stages and nitrogen levels
文献类型： 外文期刊
第一作者： Anas, Muhammad
作者： Anas, Muhammad;Qiang, Li;Li, Yang-Rui;Anas, Muhammad;Verma, Krishan K.;Liao, Fen;Li, Yang-Rui;Riaz, Muhammad;Liu, Yang
作者机构：
关键词： Nitrogen; morphology; enzyme activities; polynomial regression and PCA
期刊名称：JOURNAL OF PLANT INTERACTIONS （ 影响因子：4.208； 五年影响因子：4.344 ）
ISSN： 1742-9145
年卷期： 2021 年 16 卷 1 期
页码：
收录情况： SCI
摘要： Nitrogen is crucial for sugarcane crop to get economical sugar and biofuel throughout the world, and low nitrogen use efficiency is the main issue of sugarcane because of high nitrogen losses. In this experiment, physio-morphological, growth, and biochemical traits were observed for sugarcane genotypes (nitrogen inefficient-GT11 and efficient GXASF180-1-11) under 0.05 and 5 mMN levels at 5, 7, and 9 leaf stages. GXASF180-1-11 attained 46-58% and 16-23% more plant height and biomass than GT11, while photosynthesis and internal nitrogen use efficiency (iNUE) were 16 and 8% more at F2 fertilizer level, respectively. Highest key enzymes activity was showed in leaf whereas polynomial regression ranged between 0.53 and 0.98, 0.69 and 0.99 for iNUE and nitrogen use index. Principal component analysis explained 91.23-93.53% total variance across the stages. These results suggested that low nitrogen application rate with efficient germplasm may have the potential to improve iNUE for further cultivar development.
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