不同生态类型杂交水稻品种的产量及物质生产特性  

Yield and Dry Matter Production Characteristics of Hybrid Rice Varieties with Different Ecotype

作　　者：李敏 罗德强 江学海 周维佳 姬广梅 王学鸿 李树杏 王丽丽 彭菊 

机构地区：[1]贵州省水稻研究所,贵州贵阳550006

出　　处：《贵州农业科学》2015年第10期95-98,共4页Guizhou Agricultural Sciences

基　　金：国家自然科学基金项目"水稻高产氮高效基因型的籽粒灌浆机理及其调控"(31360314);贵州省科技计划项目"杂交籼稻高产氮高效的协同及其机理研究"[黔科合NY字(2012)3043];贵州省农业科学院创新基金项目"不同种植方式对水稻群体生产力及生态生理特征的影响研究"[黔农科合(2011002)]

摘　　要：为超高产杂交水稻品种的合理布局提供理论参考,从贵州省近年选育和引进的35个具有超高产潜力的水稻品种(组合)中筛选出生态适应型品种(筑优606和黔优108)及生态敏感型品种(Y两优2号和Y两优302),比较2类水稻品种的产量及其构成、分蘖特性及物质积累特性的差异,探索超高产杂交水稻品种的生态适应性。结果表明:相对生态适应型品种,生态敏感型品种的产量平均降低15.9%,结实率降低11.0%,千粒重降低15.5%,差异均达显著水平,有效穗数和穗粒数差异较小;分蘖成穗率较低,干物质积累量抽穗至成熟阶段显著降低,收获指数低。The yield, yield components, tillering feature and dry matter accumulation characteristics of two varieties with ecological adaptation type （Zhuyou 606 and Qianyou 108） and two varieties with ecological sensitivity type （Y Liangyou 2 and Y Liangyou 302） selected from 35 bred in Guizhou and introduced super high-yield hybrid rice varieties to probe the ecological adaptability of super high-yield hybrid rice varieties and to provide a theoretical reference for rational distribution of super high-yield hybrid rice varieties. Results. The yield, setting ratio and 1000-grain weight of rice varieties with ecological sensitivity type is 15.9%, 11.0% and 15.5% lower than rice varieties with ecological adaptation type and the differences in yield, setting ratio and 1000-grain weight between rice varieties with ecological sensitivity type and rice varieties with ecological adaptation type are at significant level. There are no obvious differences in effective panicles and grains per panicle between rice varieties with ecological sensitivity type and rice varieties with ecological adaptation type. The tiller effective panicle rate, dry matter accumulation from heading to maturity stage and harvest index of rice varieties with ecological sensitivity type is lower than rice varieties with ecological adaptation type.

关 键 词：杂交水稻 生态适应性 物质生产 

分 类 号：S511[农业科学—作物学]