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Position: Home > Articles > Analysis of Selection Method in Hybrid Wheat with Strong Heterosis Hubei Agricultural Sciences 2008,47 (5) 509-513

强优势杂交小麦选配规律分析

作  者:
李万昌;邵云;姜丽娜;李春喜;刘曙东
单  位:
河南师范大学生命科学学院;西北农林科技大学农学院
关键词:
杂交小麦;Nair分组法;产量结构;选择指数
摘  要:
利用Nair单性状水平分组法将36个杂交组合分为4组,按产量分组结果对强优势杂交组合的产量结构进行回归和综合选择指数分析。结果表明,在公顷产量7 500~9 000 kg水平下,产量结构模式为:每公顷504.0万~607.5万穗,每穗33.6~41.3粒,千粒重35.7~42.3 g;在公顷产量9 000~10 500 kg水平下,产量结构模式为每公顷525.0万~645.0万穗,每穗36.0~50.0粒,千粒重37.0~45.0 g;并得到综合选择指数I值,对I值排序与强优势杂交组合的产量进行比较,其拟合度为80%,证明综合选择指数分析方法在强优势杂交小麦组合的选育中具有较强的实用性。
译  名:
Analysis of Selection Method in Hybrid Wheat with Strong Heterosis
作  者:
LI Wan-chang1,2,SHAO Yun1,JIANG Li-na1,LI Chun-xi1,LIU Shu-dong2(1.College of Life Sciences,Henan Normal University,Xinxiang 453007,Henan,China; 2.College of Agronomy,Northweast Agriculture and Forestry University,Yangling 712100,Shanxi,China)
关键词:
hybrid wheat;nair grouping method;yield structure;selection index
摘  要:
The 36 varieties were divided into 4 groups according to yield by single characteristic method of Nair grouping in this paper.Regression and comprehensive selection index analysis were used to study the yield structure of strong heterosis in hybrid wheat according to the result of yield grouping.The results showed that the yield structure model was 504~607.5×104spikes·hm-2,per spike 33.6~41.3,35.7~42.3 g/1 000-kernel in the 7 500~9 000 kg·hm-2,and 525~645×104spikes·hm-2,per spike 36~50,37~45 g/1 000-kernel in the 9 000~10 500kg·hm-2.The comprehensive selection index(I value) was got and the comparison was made between the I value sequencing and yield sequencing of strong heterosis hybrids.The aptness was 80%.This result indicated that the analysis method of comprehensive selection index was more practicable in selecting strong heterosis hybrids wheat.

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