陆地棉品种资源盛蕾期抗旱性状的综合评价  

Comprehensive Assessment of Drought Resistance of Upland Cotton Varieties Resources During Bud Stage

作　　者：郑巨云[1] 曾辉 王俊铎[1] 龚照龙[1] 梁亚军[1] 张泽良 艾先涛[1] 郭江平[1] 莫明[1] 李雪源[1] Zheng Juyun;Zeng Hui;Wang Junduo;Gong Zhaolong;Liang Yajun;Zhang Zeliang;Ai Xiantao;Guo Jiangping;Mo Ming;Li Xueyuan(Economic Corps Research Institute,Xinjiang Academy of Agricultural Sciences,Urumqi,830091;Department of Mathematical and Physical Sci-ences,XinJiang Education Institute,Urumqi,830063;Agricultural College,Xinjiang Agricultural University,Urumqi,830052)

机构地区：[1]新疆农业科学院经济作物研究所,乌鲁木齐830091 [2]新疆师范高等专科学校数理学院,乌鲁木齐830063 [3]新疆农业大学农学院,乌鲁木齐830052

出　　处：《分子植物育种》2021年第19期6512-6528,共17页Molecular Plant Breeding

基　　金：天山青年计划项目(2017Q050);国家自然科学基金地区科学基金项目(31760405);NSFC-新疆联合基金重点支持项目(U1903204);转基因耐旱耐盐碱棉花新品种培育(2017ZX08005004-009)共同资助。

摘　　要：本研究以227份国内外陆地棉品种资源为材料,在盛蕾期测定干旱胁迫组与正常灌水组棉花的株高、果枝数、蕾数、叶绿素含量SAPD值等农艺性状及生理指标,对227份品种资源进行抗旱性综合评价。研究结果说明:不同性状抗旱系数及其变异系数存在较大差异,叶绿素含SAPD值抗旱系数(ChlDC)的变异系数最小,蕾数抗旱系数(NBDC)的变异系数最大;各品种资源综合抗旱系数(CDC)、综合抗旱指数(CDI)、综合隶属函数值(CDM)及抗性综合评价值(D)四种分析结果之间存在极显著正相关;果枝数抗旱系数(DC)与综合抗旱评价值(D值)的关联度最大,蕾数抗旱系数(DC)与综合抗旱评价值(D值)的关联度最小;用K-means法将227份品种资源材料划分为4大类:其中22份品种资源为抗旱材料,87份品种资源为中抗材料(Ⅱ),77份品种资源为敏感材料(Ⅲ),41份品种资源为高敏材料(Ⅳ)。结果表明四种分析结果存在一致性,利用多种方法综合评价棉花盛蕾期抗旱性是相对准确的,筛选的‘C-405-555’、‘敦煌77-166’、‘新陆中14’等31份抗旱品种资源可作为棉花抗旱遗传改良的特异资源。The plant height(PH), fruit branch(FB), bud number(BM) and chlorophyll(Chl) of 227 domestic and foreign upland cotton varieties resources were analyzed and evaluated by comprehensive drought resistant coefficient(CDC), comprehensive drought resistant index(CDI), membership function values(CDM), drought resistance comprehensive evaluation values(D) and clustering analysis under field drought stress and treatment. The result showed that: the drought resistant coefficient and coefficient of variation of 4 agronomic traits were different, of which coefficient of variation of chlorophyll was minimum and coefficient of variation of bud number was maximum;there were significant positive correlation between comprehensive drought resistant coefficient(CDC), comprehensive drought resistant index(CDI), membership function values(CDM) and drought resistance comprehensive evaluation values(D);Grey correlation of the drought-resistance coefficient to the D values were ranked as fruit branch(FB), plant height(PH), chlorophyll(Chl), bud number(BM). By cluster analysis, these 227 upland cotton varieties resources were divided into resistance(type Ⅰ) included 22 cotton varieties, moderately resistance(type Ⅱ) included 87 cotton varieties, sensitive(type Ⅲ) included 77 cotton varieties, high sensitive(type Ⅳ) included 41 cotton varieties. The results showed that the four analysis results were consistent, and it was relatively accurate to comprehensively evaluate the drought resistance of cotton at the full bud stage by using various methods. The selected 31 drought resistant varieties such as ’C-405-555’, ’Dunhuang 77-166’ and’Xinluzhong 14’ could be used as special resources for genetic improvement of cotton drought resistance.

关 键 词：棉花 品种资源 抗旱性状 盛蕾期 综合评价 

分 类 号：S562[农业科学—作物学]