中国油料作物学报2016，Vol.38Issue(6)：795-803,9.DOI:10.7505/j.issn.1007-9084.2016.06.013
甘蓝型油菜光合机构对干旱的生理响应
Physiological response of photosynthetic apparatus in rapeseed to drought
摘要
Abstract
To better understand the response of photosynthetic apparatus in rapeseed to drought stress,2 differ-ent drought resistance rapeseed (Brassica napus L.)cultivars Qinyou 8 (drought sensitive)and Q2 (drought toler-ant)were planted in pots under movable rain -shelter with different drought treatments (well -watered and drought stress).Drought effects on agronomic traits,gas exchange parameters,chlorophyll fluorescence parame-ters,chlorophyll ultrastructure and rubisco activity were studied.Results showed that relative growth rate,total bio-mass,leaf area and leaf relative water content decreased under drought in both genotypes.Root shoot ratio was in-creased.Among the parameters,net photosynthetic rate,transpiration rate,stomatal conductance and intercellular CO2 concentration decreased,but stomatal limitation was increased.Variable and maximum fluorescence (Fv/Fm),effective quantum yield of PSII,photochemical quenching coefficient and electron transport rate decreased under drought,but non -photochemical quenching increased.Chlorophyll ultrastructures of both cultivars were damaged.Their chlorophyll content and rubisco activity decreased,but proline and soluble sugar contents in-creased.Drought damage on Qinyou 8 was worse than that on Q2.关键词
甘蓝型油菜/干旱胁迫/气体交换参数/叶绿素荧光/叶绿体超微结构/RubiscoKey words
Rapeseed (Brassica napus L.)/Drought stress/Gas exchange/Chlorophyll fluorescence/Chlo-rophyll ultrastructure/Rubisco分类
农业科技引用本文复制引用
代碌碌,李俊,马霓,Muhammad Shahbaz Naeem,张春雷,刘哲辉,陈畅,胡超,赵运成,张利艳,刘丽欣..甘蓝型油菜光合机构对干旱的生理响应[J].中国油料作物学报,2016,38(6):795-803,9.基金项目
公益性行业（农业）科研专项（201203096）；国家自然科学基金（31101124，31071372，31271671）；国家外国青年基金（3151101074）；国家科技支撑计划 （）
