杂交小麦强优势组合选配分析  

Parental selection of heterosis crosses in hybrid wheat breeding

作　　者：王军卫[1] 张改生[1] 刘宏伟[1] 王小利[1] 王永军[1] 

机构地区：[1]西北农林科技大学陕西省作物杂种优势研究与利用重点实验室,陕西杨凌712100

出　　处：《干旱地区农业研究》2004年第3期23-26,共4页Agricultural Research in the Arid Areas

基　　金：国家自然科学基金项目(39970454);国家863计划项目(2001AA241041);国家杨凌农业生物技术育种中心资助项目(1999-B9);陕西省"十五"攻关项目(2001K02-G01-01)

摘　　要：选用8个表现突出的杂交组合,以小偃22作对照,从亲本和杂种一代产量性状、株型、株高、抗病性等农艺性状角度对其组合选配模式进行了分析。结果表明:8个组合在产量性状上均表现出正向的杂种优势。产量构成因素中以千粒重的优势为最大,其次为穗数和穗粒数;多穗型亲本与早熟大穗亲本型组配,且双亲株高在75～80cm左右,株型紧凑,抗病,较容易选配出理想的强优势组合,为杂种小麦生产实现产业化提供依据。Using 8 crosses and Xiaoyan 22, the agronomic characters of hybrid wheat such as yield, plant model, plant height and resistance to stripe rust were analyzed for the parents and F_1. The result showed that all of the 8 crosses had positive heterosis, and in the yield characters, the heterosis of 1000-grain weight was higher than that of spike number and grains per spike. The ideal crosses were found between the female of multiple-spike type and the male of large-head type, whose plant height was 75~80 cm, plant pattern was compact, and disease-resistance was high. The thesis may provide basis for the industrialization of hybrid wheat.

关 键 词：杂交 小麦 亲本选配 产量性状 杂种优势 

分 类 号：S512.103.5[农业科学—作物学]