中国水稻科学Issue(1)：53-61,9.DOI:10.16819/j.1001-7216.2016.4209
赤霉素与多效唑协同影响超级稻甬优12产量形成的作用途径分析
Mechanism Behind the Effects of GA3 and PP333 on Grain Yield Formation of SuperRice Yongyou 12
摘要
Abstract
In order to improve spikelet fertility and grain weight of inferior spikelets in super rice,3.2% GA3 •PP3 3 3 (Lilibao,LLB)were sprayed on super rice Yongyou 12 three days after heading.We investigated the effect of LLB on grain yield and the underlying mechanisms.The results indicated that LLB increased the grain yield by 4.41 % and 4.3 1 % in 2012 and 201 3,respectively compared to corresponding controls,while the theoretical yield showed 9.21 %and 6.26% increment.This may be ascribed to increased seed-setting rate and grain weight under LLB treatment compared with the control.It had been observed that there was no significant difference in pollen viability and pollen numbers on stigma between the LLB treatment and control,while the LLB treatment significantly increased the pollen germination on stigma,which was responsible for the improvement in seed-setting rate.Additionally,the chlorophyll content,net photosynthetic rate and specific leaf weight of flag leaf in the LLB treatment were higher,while the ratios of soluble sugar content in leaf to grain were lower than those of the control in the late grain filling period,indicating that LLB could not only delay the leaf senescence but also promote transportation of assimilates to grains.关键词
3.2%赤霉素•多效唑/超级稻/产量/结实率/千粒重Key words
3.2%GA3 •PP3 3 3/super rice/grain yield/spikelet fertility/1000-grain weight分类
农业科技引用本文复制引用
杨雪芹#,陈婷婷#,赵霞,张彩霞,杨永杰,符冠富,陶龙兴..赤霉素与多效唑协同影响超级稻甬优12产量形成的作用途径分析[J].中国水稻科学,2016,(1):53-61,9.基金项目
国家自然科学基金资助项目(31501264 （）
31101116) （）
浙江省自然科学基金资助项目(LQ15C130003) （LQ15C130003）
公益性行业(农业)科研专项(201203029) （农业）
国家水稻产业体系项目(CARS-01-27) （CARS-01-27）
比尔和梅琳达盖茨基金资助项目 （）
中央级公益性科研院所专项资金资助项目(2014RG004-4) （2014RG004-4）
