外源赤霉素(GA_3)对青花菜花芽分化和花球发育的影响  

Effects of Exogenous GA_3 on Flower Bud Differentiation and Flower-ball Development of Broccoli (Brassica oleracea var. italica)

作　　者：蒋欣梅[1] 李丹[1] 王凤娇[1] 于锡宏[1] 

机构地区：[1]东北农业大学园艺学院,哈尔滨150030

出　　处：《植物生理学通讯》2008年第4期639-642,共4页Plant Physiology Communications

基　　金：东北农业大学创新团队课题(CXT002-2-2);黑龙江省教育厅重点实验室(寒地蔬菜生物学实验室--蔬菜生理与设施园艺研究室)资助;黑龙江省研究生创新科研资金项目(YJSCX2008-092HLJ)

摘　　要：喷施GA3可在一定程度上促进青花菜的花芽分化进程,因而使花球的现蕾期、膨大期和采收始期相应提前,50mg·L-1GA3处理的最佳,产量和花球紧实度也增加,喷施100mg·L-1GA3的青花菜花球维生素C含量显著下降。The experiment was carried out with different concentrations of exogenous GA3 spraying on broccoli （Brassica oleracea var. italica）. The results showed that, the concentration of 50 mg·L^-1 GA3 could promote the flower-bud differentiation, advance the budding stage, rapid growing stage and initial period harvest, increase the yield and flower-ball compactness significantly. However, 100 mg·L^-1 GA3 decreased ascorbic acid of broccoli flower-ball obviously.

关 键 词：赤霉素 青花菜 花芽分化 花球发育 

分 类 号：S635.3[农业科学—蔬菜学]