您好，欢迎访问新疆农业科学院 机构知识库！
新疆农业科学院机构知识库

全部

  • 全部
  • 标题
  • 学者
  • 机构
  • 关键词

Impact of Drought Stress on Yield-Related Agronomic Traits of Different Genotypes in Spring Wheat

文献类型： 外文期刊

作者： Xu, Zihan 1 ; Lai, Xiangjun 3 ; Ren, Yi 1 ; Yang, Hongmei 4 ; Wang, Haobo 1 ; Wang, Chunsheng 2 ; Xia, Jianqiang 2 ; Wang, Zhenlong 2 ; Yang, Zhenyu 2 ; Geng, Hongwei 1 ; Shi, Xue 3 ; Zhang, Yueqiang 2 ;

作者机构： 1.Xinjiang Agr Univ, Coll Agron, Urumqi 830052, Peoples R China

2.Xinjiang Acad Agr Sci, Inst Nucl & Biol Technol, Xinjiang Key Lab Crop Biotechnol, Minist Agr,Key Lab Crop Ecophysiol & Farming Syst, Urumqi 830091, Peoples R China

3.Northwest A&F Univ, Coll Agron, State Key Lab Crop Stress Biol Arid Areas, Yangling 712100, Peoples R China

4.Xinjiang Acad Agr Sci, Inst Appl Microbiol, Xinjiang Lab Special Environm Microbiol, Urumqi 830091, Peoples R China

关键词： drought stress; grain yield; physiological changes; spring wheat; yield stability

期刊名称：AGRONOMY-BASEL （ 影响因子：3.7； 五年影响因子：4.0 ）

ISSN：

年卷期： 2023 年 13 卷 12 期

页码：

收录情况： SCI

摘要： Drought stress is one of the major abiotic stresses to wheat worldwide, with negative effects on wheat growth and yield. Assessing genetic variation and drought stress tolerance of key agronomic and physiological traits of spring wheat and screening germplasm resources for higher drought tolerance and yield stability are a prerequisite for developing new, better-adapted spring wheat varieties. This study evaluated nine important agronomic and physiological traits in 152 spring wheat cultivars under non-stress (NS) and drought-stress (DS) conditions. Under DS conditions, grain yield per plot (GYP) and grain weight per spike (GWE) were significantly reduced by 33.8% and 31.7%, and their drought-tolerance indexes (DIs) were only 0.66 and 0.69, respectively, indicating that GYP and GWE are the most susceptible traits to drought stress. The SPAD value of flag leave at flowering stage decreased by 13.9% under DS conditions, and the DI of SPAD was 0.86. In addition, DI-SPAD was significantly positively correlated with DIs of plant height (PH), grain number per spikelet (GPS), grain number per spike (GNS), GWE and GYP, indicating that the drought tolerance and yield of wheat are closely related to chlorophyll retention. Six wheat germplasm accessions were identified for their ability to sustain grain yield and improve drought tolerance simultaneously. These results provide insights into the genetic co-variation between grain yield and drought stress tolerance and provide a theoretical basis for the development of new wheat cultivars with excellent drought tolerance and high yields in the presence and absence of drought.

  • 相关文献
作者其他论文 更多>>
置顶
购物车
反馈

© 京ICP备09089781号-29 主办单位：新疆农业科学院

学术资源： 中国农业科学院 农业专业知识服务系统 农科联盟资源共建共享平台 中国农业科技文献与信息服务平台 中国农业期刊集成服务平台