西北农业学报2026，Vol.35Issue(3)：439-446,8.DOI:10.7606/j.issn.1004-1389.2026.03.004
耐低氮棉花种质的筛选及评价
Screening and Evaluation of Low-Nitrogen Tolerant Cotton Germplasm
摘要
Abstract
The low-nitrogen tolerance of 51 cotton germplasm accessions was systematically evaluated under two nitrogen levels[low nitrogen(N0)and normal nitrogen(N345)]using analysis of variance(ANOVA),correlation analysis,principal component analysis,fuzzy membership function analysis,and stepwise regression analysis.The results showed significant differences among the 51 cotton germ-plasm accessions at both nitrogen concentration levels.Under the N0 treatment,most traits,inclu-ding plant height,fruiting branch number,boll numbers,decreased,whereas nitrogen use efficiency and lint percentage increased.Principal component analysis extracted five principal components,with contribution rates of 31.054%,17.783%,12.875%,11.926%,and 7.295%,respectively,and a cu-mulative contribution rate of 80.933%.Based on the fuzzy membership function method,the compre-hensive evaluation value(D value)for low-nitrogen tolerance of each cotton germplasm accession was calculated.Among them,'Lumian 319''Lumian 303''Xinluzhong 74''Xinluzhong 80''Xinluzao 74'and'Xinluzao 63'exhibited relatively high D values(0.560-0.609),indicating strong low-nitro-gen stress tolerance and were therefore classified as low-nitrogen tolerant varieties.In contrast,'Xin-luzao 58''Xinluzhong 71''Zhong 7700''Wanmian LHM9''Xinluzhong 77'and'Xinluzao 62'showed weak tolerance to low-nitrogen stress and were classified as low-nitrogen-sensitive varieties.The analysis identified total dry matter mass,micronaire,boll number,root nitrogen accumulation,and plant height as key indicators for evaluating low-nitrogen tolerance in cotton.The low-nitrogen tolerant germplasm accessions identified in this study provide an important theoretical basis and mate-rials basis for reduced-nitrogen cultivation and breeding of low-nitrogen tolerant cotton varieties.关键词
耐低氮/棉花/筛选/评价/隶属函数法Key words
Low-nitrogen tolerance/Cotton/Identification/Evaluation/Membership function method引用本文复制引用
张文,逯涛,曾庆涛,王政洋,杨芮,赵富强..耐低氮棉花种质的筛选及评价[J].西北农业学报,2026,35(3):439-446,8.基金项目
"天山英才"青年科技拔尖人才项目-基层科技骨干人才(2022TSYCJC0061) （2022TSYCJC0061）
新疆生产建设兵团第七师胡杨河市财政科技计划(2024C03) （2024C03）
财政部和农业农村部国家现代农业产业技术体系(CARS-15-41).Foundation item"Tianshan Talents"Youth Science and Technology Outstanding Talent Project-Grassroots Science and Technology Backbone Talent(No.2022TSYCJC0061) （CARS-15-41）
Huyanghe Financial Sci-ence and Technology Project of the7th Division of Xinjiang Production and Construction Corps(No.2024C03) （No.2024C03）
China Modern Agriculture Industry Technology System of MOF and MARA(No.CARS-15-41). （No.CARS-15-41）
