矮秆蓖麻杂交种产量与主要农艺性状的相关及多元回归分析  

Dwarf Castor-oil Plant Hybrids Yield and the Main Agronomic Characters of Correlation and Multiple Regression Analysis

作　　者：李金琴[1] 张智勇[1] 何智彪[1] 贾娟霞[1] 乔文杰[1] 

机构地区：[1]内蒙古通辽市农业科学研究院,内蒙古通辽028015

出　　处：《内蒙古民族大学学报（自然科学版）》2010年第1期40-43,共4页Journal of Inner Mongolia Minzu University：Natural Sciences

基　　金：内蒙古自然科学基金项目(20080404MS0303);内蒙古通辽市十.五攻关项目

摘　　要：对自选的15个矮秆蓖麻杂交组合的产量与主要农艺性状进行了相关及多元回归分析.结果表明:单株产量与生育期、主茎节数、二级分枝有效果穗数间成不显著负相关,与有一级分枝有效果穗数成显极著正相关,与有效分枝数、一级分枝穗蒴果数成显著正相关,与其他性状成不显著正相关.通过逐步回归分析建立了数学模型,通径分析结果表明,一级分枝穗长、一级分枝有效穗数、株高对产量具有正向效应,主茎穗位、生育期对产量具有负向效应.因此选育一级分枝有效穗数多、一级分枝穗较长、穗位低,同时兼顾株高、生育期适中的组合易获得高产杂交种.In order to customize the 15 Dwarf castor-oil plant cross combinations of yield and main agronomic characters of and muhiple regression analysis. Results showed that the yield and growth, the number, secondary branch stem effective grain number is a significant negative correlation between primary branch, and has a number of effeclive ear is related to show, with branch grain number 1, branching into capsule significant positive correlation with other traits, as no significant positive colxelation. Through stepwise regression analysis was established the mathematical model, size analysis results show that the level of branching ear-length, branches, high effective panicles of yield positive effect, the main stem of output growth, ear has negative effects. Therefore, breeding a multi-branched panicles, a branched panicle long, ear-bit low, taking into account the height, the combination of moderate growth period easy access to high-yiehfing hybrids.

关 键 词：矮秆蓖麻 杂交种 产量 农艺性状 相关分析 

分 类 号：S565.6[农业科学—作物学]