新疆农业科学2018，Vol.55Issue(10)：1786-1793,8.DOI:10.6048/j.issn.1001-4330.2018.10.003
高温胁迫对不同棉花品种光合作用及产量性状的影响
The Impact of High Temperature Stress on Photosynthetic Characteristics, Yield and Fiber Traits of Different Cotton Varieties during Flowering and Boll-setting Stage
摘要
Abstract
[Objective] The aim of this study is to clarify the effects of high temperature stress on photosynthetic traits and screen high temperature tolerant varieties by studying the differences of photosynthetic characters, yield traits and quality characters among different cotton varieties under high temperature stress, in the hope of breeding ing theoretical support for breeding high temperature resistant varieties.[Method]Five physiological indexes: leaf net photosynthetic rate, transpiration rate, stomatal conductance, intercellular CO2 concentration and photosynthetic water use efficiency were measured in 20 upland cotton resources under high temperature stress, and boll setting per plant, boll weight per plant, lint percentage, yield of seed cotton, ling yield, fiber length, specific strength, micronaire value, uniformity and elongation were studied to find out their difference and relevance.[Result]The results showed that photosynthetic traits and yield traits of 20 varieties decreased compared with CK at flowering and boll setting stage, high temperature resistance of 20 cultivars was significantly different in different varieties, but there were no differences in fiber traits. The boll number per plant and boll weight were positively associated with net photosynthetic rate, transpiration rate and water use efficiency.[Conclusion]The net photosynthetic rate and yield of Zhongmian 35, Xiang mian 11 and Emian10 were relatively high among all the cultivars under high temperature stress through comparative analysis, which could be used for improvement of cotton breeding for anti-high temperature as the medial material and parent selection.关键词
棉花/耐高温/光合特性/产量品质性状Key words
cotton/high temperature resistance/photosynthetic traits/yield and fiber quality traits分类
农业科技引用本文复制引用
龚照龙,郑巨云,梁亚军,王俊铎,郭江平,陈全家..高温胁迫对不同棉花品种光合作用及产量性状的影响[J].新疆农业科学,2018,55(10):1786-1793,8.基金项目
国家自然科学基金新疆联合基金 (U1403284) （U1403284）
新疆农业科学院青年基金项目 (xjnkq-2017003) （xjnkq-2017003）
