中国农业科技导报2026，Vol.28Issue(5)：50-61,12.DOI:10.13304/j.nykjdb.2024.1049
79份陆地棉种质资源抗旱性鉴定与综合评价
Drought Resistance Identification and Comprehensive Evaluation of 79 Upland Cotton Germplasm Resources
摘要
Abstract
In order to comprehensively evaluate the drought resistance of upland cotton germplasm resources,79 upland cotton germplasm resources were used as materials.2 treatmetns were set including normal irrigation and drought stress during flowering and boll stage.The drought resistance was evaluated by descriptive statistics,drought resistance coefficient(DC),drought resistance index(DI),drought resistance comprehensive evaluation values(D)and principal component,grey correlation degree and cluster analysis.The results showed that drought stress had significant effects on 12 traits(P<0.05)except for the first fruiting node,height of the first branch and uniformity index.For the coefficient of variation,the number of bolls per plant and the number of fruit branches were greatly affected by drought stress.For the DC and DI,the number of bolls per plant,short fiber index and effective branch number were greatly affected by drought stress.Principal component analysis transformed 15 traits into 5 independent comprehensive indexes,which could cover 68.275％of the original traits,and were mainly determined by fiber length,short fiber index,uniformity index,single boll weight,height of the first branch,plant height,elongation and fruit branch number.The results of grey correlation analysis showed that fiber length,uniformity index,plant height and fruit branch number were closely related to D value and weighted drought resistance coefficient.According to the results of principal component analysis and grey correlation analysis,fiber length,uniformity index,plant height and fruit branch number could be used as important indexes for drought resistance evaluation of cotton.The clustering analysis classified 79 cotton germplasms into 4 groups.Group Ⅰ belonged to high drought-resistant type,including Xinluzao 63,Xinluzao 62,Xinluzhong 78 and Xinluzhong 81.Group Ⅱ belonged to drought resistant type,including Xinluzhong 82,Z1112,Xinluzhong 84 and other 23 cotton germplasm resources.Group Ⅲ belonged to rather drought-sensitive type,including Xinluzao 82,y7-1,Zhonghua 4108 and other 40 cotton germplasm resources.Group Ⅳ belonged to drought sensitive type,including 993,Lumian 343,Xinluzao 46 and other 12 cotton germplasm resources.Above results not only provided theoretical basis and germplasm resources for screening and breeding drought-resistant cotton varieties,but also laid important foundation for addressing climate change,enhancing the sustainability of cotton production,and ensuring the stable development of the industry.关键词
陆地棉/种质/抗旱性/综合评价/性状Key words
upland cotton/germplasm/drought resistance/comprehensive evaluation/trait分类
农业科技引用本文复制引用
张文,逯涛,赵富强,曾庆涛,王政洋,杨芮..79份陆地棉种质资源抗旱性鉴定与综合评价[J].中国农业科技导报,2026,28(5):50-61,12.基金项目
天山英才计划项目(2022TSYCJC0061) （2022TSYCJC0061）
新疆生产建设兵团第七师胡杨河市财政科技计划项目(2023D01) （2023D01）
国家棉花产业技术体系建设项目(CARS-15-41). （CARS-15-41）
