开花期外施表油菜素内酯(epi-BR)对水稻的影响  

The Effects of epi-BR Treated in Primary Flowering Stage on Rice

作　　者：王士银[1,2] 陈冉冉[2] 石庆华[1] 张桦[1] 赵明[2] 徐江[2] 

机构地区：[1]新疆农业大学农学院,新疆乌鲁木齐830052 [2]中国农业科学院作物科学研究所/农业部作物生理生态重点开放实验室,北京100081

出　　处：《作物杂志》2012年第4期83-86,共4页Crops

基　　金：科技部"973"计划项目子课题(2009CB118605);国家自然科学基金项目(31071351);农业部转基因生物新品种培育重大专项课题(2009ZX08009-065B);比尔-盖茨基金会项目二级子课题(51587-19)

摘　　要：选用水稻品种日本晴为试验材料,初花期喷施表油菜素内酯(epi-Brassinolide,epi-BR)处理,并以喷施BR合成抑制剂-芸苔素吡咯(Brassi-nazole,Brz)为负对照,研究不同处理条件下水稻剑叶形态、叶绿素含量和产量构成因素的变化。结果表明,epi-BR提高了水稻灌浆高峰期剑叶中的叶绿素含量和比叶重,增加了水稻的结实率和千粒重,从而提高了水稻的生物产量和收获指数,使水稻增产。The rice （ O. sativa L. spp. japonica, var. nipponbare） was used as the research material and treated with epi-brassinolide （epi-BR） at primary flowering stage, while brassinazole （ Brz, the inhibitor of epi-BR synthesis） was used as negative control. It was studied that the effect of epi-BR on the shape or flag leaf,the content of chlorophyl and the change of yield components. The results indicated that epi-BR could increase the content of chlorophyl and specific leaf weight （SLW） during and finally increase the biological the phases of grain production, harvest filling index , and increase the rice setting rate, 1000-grain weight, and rice yield.

关 键 词：水稻 epi-BR 叶绿素 比叶重 收获指数 结实率 

分 类 号：S511[农业科学—作物学]