西北农业学报2025，Vol.34Issue(12)：2190-2201,12.DOI:10.7606/j.issn.1004-1389.2025.12.003
不同小麦材料灌浆期耐热性分析及综合评价
Analysis and Comprehensive Evaluation of Heat-resistant of Different Wheat Materials at Grain Filling Stage
摘要
Abstract
In order to identify heat-resistant wheat materials,12 different wheat materials were select-ed for heat tolerance analysis,providing a basis for the breeding of heat-tolerant wheat varieties.In this experiment,plastic greenhouses in the field were constructed to analyze the heat tolerance of 12 differ-ent wheat materials,and the wheat was subjected to high-temperature treatment from 15 days after flowering until the full maturity stage(with an average daily maximum temperature of 38.14 ℃).The results indicated that high-temperature stress on wheat during the grain-filling stage reduced the chlo-rophyll content,accelerated the grain-filling rate,shortened the grain-filling duration,increased the grain number,but decreased the grain mass in wheat.To overcome the limitations of single-index eval-uations for heat tolerance in wheat,we employed multivariate analyses,including principal component analysis(PCA),membership function analysis,and stepwise regression;and three principal compo-nents(eigenvalues＞1)were extracted,explaining 86.82％of the cumulative variance.According to the D-value cluster analysis,the 12 wheat materials were divided into three categories:'Zhengmai 366''Xiaoyan 759''Bainong 207''M99A-6''Xinong1668''Zhongmai 895',and'M99A-2'were classi-fied as heat-resistant materials;'Xinong 511''M114-2''Luomai 42'and'Yutong 112'were classi-fied as medium heat-resistant materials;and'Bainong 307'was classified as a heat-sensitive material.关键词
小麦/灌浆期高温胁迫/灌浆特征/耐热性鉴定Key words
Wheat/High temperature stress at grain filling stage/Grouting characteristics/Identifi-cation of heat-resistant引用本文复制引用
WANG Yang,MA Lingjian,GUO Xuyu,SUN Zhiwei,SHI Zhangpeng,ZHAO Yue,ZHOU Hao,SHAO Leilei,WANG Hairong,NIU Na..不同小麦材料灌浆期耐热性分析及综合评价[J].西北农业学报,2025,34(12):2190-2201,12.基金项目
陕西省重点产业创新链项目(2021ZDLNY01-02). Shaanxi Province Key Industry Innovation Chain Project(No.2021ZDLNY01-02). （2021ZDLNY01-02）
