Teng Wan, He Xue, Tong Yiping
The State Key Laboratory for Plant Cell and Chromosome Engineering, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China.
College of Advanced Agricultural Sciences, University of Chinese Academy of Sciences, Beijing 100049, China.
Plants (Basel). 2022 Feb 11;11(4):492. doi: 10.3390/plants11040492.
The increasing global population and the negative effects of nitrogen (N) fertilizers on the environment challenge wheat breeding to maximize yield potential and grain protein concentration (GPC) in an economically and environmentally friendly manner. Understanding the molecular mechanisms for the response of yield components to N availability and assimilates allocation to grains provides the opportunity to increase wheat yield and GPC simultaneously. This review summarized quantitative trait loci/genes which can increase spikes and grain number by enhancing N uptake and assimilation at relative early growth stage, and 1000-grain weight and GPC by increasing post-anthesis N uptake and N allocation to grains.
全球人口不断增长，氮肥对环境产生负面影响，这对小麦育种提出了挑战，要求以经济和环境友好的方式实现产量潜力和籽粒蛋白质浓度（GPC）最大化。了解产量构成因素对氮素供应的响应以及同化物向籽粒分配的分子机制，为同时提高小麦产量和GPC提供了契机。本综述总结了一些数量性状位点/基因，这些位点/基因可通过在相对早期生长阶段增强氮素吸收和同化来增加穗数和粒数，并通过增加花后氮素吸收和向籽粒的氮素分配来提高千粒重和GPC。
