华北农学报2017，Vol.32Issue(5)：224-231,8.DOI:10.7668/hbnxb.2017.05.033
全生育期干旱胁迫对棉花形态、生理、光合作用和产量的影响
Effects of Drought Stress in the Whole Period on Cotton Morphology, Physiology,Photosynthesis and Yield
摘要
Abstract
In order to study the effects of continuous drought treatment in whole growth period on cotton grow-ing development and final yield,in this experiment,pot-culture method was taken and Xinluzao 19hao,Xinluzao 27hao and Xinluzao 54hao as materials,the treatments were light and moderate drought stress,then measured mor-phological indexes,physiological indexes and photosynthetic parameters at seedling stage,bud stage,blooming stage and boll opening stage,and investigated yield components at harvest time. Results showed:cotton height and stem diameter decreased with the strengthen of drought stress;The content of reactive oxygen species and antioxidant en-zyme activities were great difference at different growth stage,correlation analysis showed that there were significant or extremely significant correlation between active oxygen content and antioxidant enzyme activity,indicted that an-tioxidant enzymes activity changed regularly with the content of reactive oxygen species,so as to eliminate the exces-sive oxygen species in vivo and prevent the damage of reactive oxygen species;The photosynthesis of cotton at bud stage decreased with the strengthen of drought stress,but increased at boll opening stage,except Xinluzao 27hao which possibly due to persistent drought treatment caused the different developmental stage of cotton at later growth stage;Drought stress reduced the yield per plant and fiber length of Xinluzao 27hao and Xinluzao 54hao, light drought stress had little effect on single boll weight,even played a role in promoting;There were four indexes of cot-ton at blooming stage had significant correlation with yield per plant,indicted that cotton blooming stage might be the key period which easy to be affected by environment and determined the final yield.关键词
棉花/干旱胁迫/生理/光合作用/产量Key words
Cotton/Drought stress/Physiology/Photosynthesis/Yield分类
农业科技引用本文复制引用
田又升,谢宗铭,范术丽,庞朝友,孙国清,张国丽,叶春秀,于航,马盼盼,苗领娟..全生育期干旱胁迫对棉花形态、生理、光合作用和产量的影响[J].华北农学报,2017,32(5):224-231,8.基金项目
棉花生物学国家重点实验室开放课题(CB2016A16) （CB2016A16）
兵团国际科技合作计划项目(2015AH001) （2015AH001）
兵团应用基础研究计划项目(2016AG005) （2016AG005）
