新疆农业科学2026，Vol.63Issue(1)：1-18,18.DOI:10.6048/j.issn.1001-4330.2026.01.001
陆地棉资源材料萌发期耐冷性鉴定及综合评价
Identification and comprehensive evaluation of cold resistance of Gossypium hirsutum L.resource materials during germination period
摘要
Abstract
[Objective]To utilize the germplasm resources of Gossypium hirsutum L.,in the hope of selecting excellent resource materials with strong cold resistance,thus providing parent and resource materials for the genetic improvement of cold tolerance traits and the breeding of new varieties.[Methods]271 Gossypium hirsutum L.germplasm resources were taken as test materials,two environmental conditions of control(28 ℃)and low temperature stress treatment(4 ℃)were set to test the average root length,germination rate,germination potential,germination index,average germination speed,average germination days,cold tolerance coefficient of 12 traits,and correlation analysis,principal component analysis and cluster analysis were conducted to carry out comprehensive evaluation of the germination of different upland cotton germplasm resources cold tolerance.[Results]Principal component analysis converted the six cold tolerance indexes into three mutually independent comprehensive indicators,reflecting 92.99％of the information content of the six indicators.Using comprehensive cold resistance value(D),271 germplasm resources of terrestrial cotton were divided into 4 categories;Class Ⅰ belonged to strong cold resistance with 17 materials;category Ⅱ belonged to cold resistant type,in which there were 31 materials;the third category was of not cold resistant type with 201 materials;class Ⅳ was cold sensitive category with 22 materials;they covered 6.27％,11.44％,74.17％and 8.12％of the test materials,respectively.Using multiple regression analysis,the prediction model of cold tolerance of upland cotton was established as Y=0.14+0.129X3+0.109X4+0.098X2,and three cold tolerance indexes were selected,which were the cold tolerance coefficient of germination rate,germination potential and germination index.[Conclusion]17 strong cold tolerance materials are selected by 4 ℃ low temperature treatment,and the cold tolerance coefficient of germination rate,germination potential and germination index can be used as the cold resistance index of germination period of Gossypium hirsutum L.关键词
陆地棉/萌发期/耐冷系数/综合D值Key words
Gossypium hirsutum L./germination period/cold resistance coefficient/comprehensive D value分类
农业科技引用本文复制引用
王兵跃,钱帅帅,李雪源,曲延英,王俊铎,阳妮,王俊豪,郑巨云,梁亚军,龚照龙,耿世伟,孙丰磊..陆地棉资源材料萌发期耐冷性鉴定及综合评价[J].新疆农业科学,2026,63(1):1-18,18.基金项目
新疆维吾尔自治区自然科学基金资助项目(2022D01A258) （2022D01A258）
新疆维吾尔自治区天山英才培养计划(2023TSYCTD0003) （2023TSYCTD0003）
新疆维吾尔自治区天山英才-科技创新领军人才项目 （）
新疆巴音郭楞蒙古自治州"揭榜挂帅"项目(202217) Sponsored by Natural Science Foundation of Xinjiang Uygur Autonomous Region(2022D01A258) （202217）
The Tianshan Talent Cultivation Program Project of Xinjiang Uygur Autonomous Region(2023TSYCTD0003) （2023TSYCTD0003）
The Tianshan Talent and Technology Innovation Leading Talent of Xinjiang Uygur Autonomous Region （）
Project of"Uncovering the List"in Bayingolin Mongol Autonomous Prefecture,Xinjiang(202217) （202217）
