Screening of drought resistance traits and drought resistance evaluation in wheat advanced lines
View Fulltext  View/Add Comment  Download reader
  
DOI:10.7606/j.issn.1000-7601.2024.01.02
Key Words: wheat  drought resistance index  agronomic traits  yield traits  cluster analysis
Author NameAffiliation
SONG Luxing College of Agronomy, Northwest A&F University, State Key Laboratory of Crop Stress Biology in Arid Areas, China Institute of Water Saving Agriculture in Arid Areas, Yangling, Shaanxi 712100, China 
ZHANG Shanshan College of Agronomy, Northwest A&F University, State Key Laboratory of Crop Stress Biology in Arid Areas, China Institute of Water Saving Agriculture in Arid Areas, Yangling, Shaanxi 712100, China 
LI Xuan College of Agronomy, Northwest A&F University, State Key Laboratory of Crop Stress Biology in Arid Areas, China Institute of Water Saving Agriculture in Arid Areas, Yangling, Shaanxi 712100, China 
QIAO Pengfang College of Agronomy, Northwest A&F University, State Key Laboratory of Crop Stress Biology in Arid Areas, China Institute of Water Saving Agriculture in Arid Areas, Yangling, Shaanxi 712100, China 
BI Qi College of Agronomy, Northwest A&F University, State Key Laboratory of Crop Stress Biology in Arid Areas, China Institute of Water Saving Agriculture in Arid Areas, Yangling, Shaanxi 712100, China 
CHEN Liang College of Agronomy, Northwest A&F University, State Key Laboratory of Crop Stress Biology in Arid Areas, China Institute of Water Saving Agriculture in Arid Areas, Yangling, Shaanxi 712100, China 
HU Yingang College of Agronomy, Northwest A&F University, State Key Laboratory of Crop Stress Biology in Arid Areas, China Institute of Water Saving Agriculture in Arid Areas, Yangling, Shaanxi 712100, China 
Hits: 10
Download times: 11
Abstract:
      During the growing seasons of 2020-2021 and 2021-2022, 43 and 20 wheat advanced lines were respectively evaluated for 8 agronomic traits and 8 yield traits in three different environments: Drought shelter(DS), Yangling Agricultural Station 1(YAS) and Qianxian(QX). The contribution of each trait to wheat drought resistance was assessed by calculating the drought resistance index. Comprehensive analyses were performed using methods such as the membership function and cluster analysis to select wheat advanced lines with high drought resistance.The results indicated that under drought stress(DS), both agronomic and yield traits of wheat were suppressed to varying degrees. Based on the contribution of each trait to wheat drought resistance, several important indicators for evaluating wheat drought resistance, such as biomass, yield, spikelet number, and thousand\|grain weight were selected. Through comprehensive drought resistance index (D) and cluster analysis, the tested wheat varieties (lines) were categorized into five levels: highly drought\|resistant, drought\|resistant, moderately drought\|resistant, drought\|sensitive, and highly drought\|sensitive. In the two years of assessment, a total of 6 highly drought\|resistant wheat lines including 21-1, 21-34, 21-39, 21-18, 21-2, and 22-17 were identified.