花期低温阴雨对甘蓝型油菜产量和种子含油量的影响  

Effects of continuous low temperature overcast and rainy weather on yield and oil content of Brassica napus during flowering stage

作　　者：涂玉琴[1] 戴兴临[1] 

机构地区：[1]江西省农业科学院作物研究所,江西南昌330200

出　　处：《中国油料作物学报》2011年第5期470-475,共6页Chinese Journal of Oil Crop Sciences

基　　金：江西省农科院科技创新基金(博士启动项目);江西省自然科学基金(2009GZN0060;2010GQN0104);国家自然科学基金(31060195)

摘　　要：对2010年3月2日～11日低温阴雨条件下19个甘蓝型油菜品种有效结角率、每角粒数、千粒重和种子含油量进行了分析。结果表明:(1)开花后低温阴雨导致油菜有效结角率下降(平均为对照的72.81%),每角粒数减少(是对照的57.32%),种子千粒重稍有增加(是对照的119.79%),含油量降低(是对照的95.31%)。(2)开花时低温阴雨导致有效结角率下降(是对照的46.01%),每角粒数减少(是对照的33.11%),千粒重有所增加(是对照的114.67%),含油量降低(是对照的96.71%)。(3)开花时低温阴雨对所有供试品种的有效结角率、每角粒数影响均大于开花后。(4)花期低温阴雨的影响因品种而异,希望98、中油821等7个品种抗耐性好。同一品种对开花期和开花后低温阴雨的抗耐性基本一致。Yield factors and oil contents of 19 Brassica napus genotypes were investigated under continuous low temperature overcast and rainy weather（CLTORW） from March 2 to March 11,2010.Results were as below：（1） CLTORW after flowering,RES（ratio of effectual silique） decreased and was 72.81% of control,SPS（seeds per silique） was 57.32% and OC（oil content） was 95.31% of control,but WTS（thousand seeds weight） increased to 119.79% of control.（2） CLTORW during the flowering stage,RES decreased and was 46.01% of control,SPS was 33.11% and OC was 96.71% of control,but WTS increased to 114.67% of control.（3） The effects of CLTORW on RES and SPS during flowering stage were much more severe than those of CLTORW after flowering stage.（4） Genotypes had different responses to CLTORW.Cluster analysis showed 7 varieties had higher tolerance,such as Xiwang 98 and Zhongyou 821.The cultivar had the same tolerance response to CLTORW both during and after flowering stages.

关 键 词：甘蓝型油菜 花期 低温 阴雨 有效结角率 每角粒数 含油量 

分 类 号：S565.401[农业科学—作物学]