超级杂交稻产量构成因素的分析及其选育途径的探讨  

Analysis on the Yield Component Factors of Hybrid Superrice and Discussion on its Breeding Approach

作　　者：旷一相 肖宇龙 

机构地区：[1]江西省杂交水稻技术工程研究中心

出　　处：《江西农业学报》1999年第2期15-19,共5页Acta Agriculturae Jiangxi

摘　　要：应用三元线性回归方法，分析了１０个杂交中籼组合的每公顷穗数、每穗实粒数、千粒重对产量的影响。结果表明，每穗实粒数对产量影响最大，其次为穗数。在保持现有组合的穗数、千粒重的基础上，增加每穗实粒数是提高杂交水稻产量的有效途径。认为超级水稻的主要形态特征应该是“中秆、多蘖、大穗”，选育仍以杂种优势的“三型”理论来指导。通过杂交水稻两系、三系和化杀等途径来实现超级水稻的选育。Taking 10 middle -season indica hybrid combinations as the experimental crop, the effect of spikes per hectare, filled grains per panicle and 1000-grain weight on yield was analysed by three variate linear regression method. The result indicated that filled grains per panicle has a main influence on yield, and spikes per hectare has a secondary influence. Therefore, on the basis of keeping the spikes per hectare and 1000-grain weight of the present combinations, increasing filled grains per panicle is an effective approach to raising the yield of hybrid rice. The author considered the main morphological character of superrice should be medium stem, plenty of tiller and big spike;The breeding of superrice should be realized by bilinear, three lines breeding and male-sterilant, and guided by the hybrid vigor three type theory.\;

关 键 词：产量构成 回归分析 选育 杂交水稻 

分 类 号：S511.03[农业科学—作物学]