新疆农业科学2017，Vol.54Issue(12)：2190-2197,8.DOI:10.6048/j.issn.1001-4330.2017.12.005
花铃期干旱胁迫对不同棉花品种光合作用影响
Photosynthetic Characteristics of Different Cotton Varity under Drought Stress during Flowering and Boll-setting Stage
摘要
Abstract
[Objective] The aims of this study is to reveal the effects of drought stress on photosynthetic characteristics of cotton and provide theoretical support for drought resistant breeding of cotton by studying the differences of photosynthetic characteristics among different cotton cultivars under drought stress.[Method] 16N2,16N3,16N4,16N5 and Yuanmian 6,a total of 5 varieties were taken test materials to measure the photosynthetic traits of the net photosynthetic rate,transpiration rate,stomata1 conductance and photosynthesis and water utilization rate and study the difference and correlation between them both under the drought stress and normal irrigation conditions.[Result]The result showed that the photosynthetic characteristics of 5 cultivars decreased compared with the irrigation conditions,the drought resistance coefficient of cultivars was different in different varieties,of which photosynthetic rate,stomatal conductance,transpiration rate and water use efficiency of 16N2 were higher than those of others.[Conclusion] Drought stress treatment could decrease photosynthetic physiological indexes such as transpiration rate,stomatal conductance and photosynthetic rate except photosynthetic water use efficiency.Through comparative analysis of the varieties,it has been found that the variety with the highest drought resistance coefficient and strong drought resistance was 16N2,which could be used as the intermediate material for drought resistance breeding.This research has also laid a foundation for drought resistant pyramiding breeding.关键词
棉花/干旱胁迫/光合作用/抗旱系数Key words
cotton/drought stress/photosynthesis/drought resistance coefficient分类
农业科技引用本文复制引用
郑巨云,王俊铎,龚照龙,梁亚军,艾先涛,郭江平,段静波,莫明,李雪源..花铃期干旱胁迫对不同棉花品种光合作用影响[J].新疆农业科学,2017,54(12):2190-2197,8.基金项目
新疆维吾尔自治区公益性科研院所基本科研业务经费项目(KY2017078) （KY2017078）
转基因耐旱耐盐碱棉花新品种培育(2017ZX08005004-009)Basic scientific research funds of public welfare scientific research institutes in Xinjiang Uygur Autonomous Region (KY2017078)and Cultivation of new transgenic cotton varieties with drought-resistance and salt-tolerance.(2017ZX08005004-009) （2017ZX08005004-009）
