不同棱型啤酒大麦产量相关性状的初步分析

A PRELIMI NARY ANALYSIS OF CHARACTERS ASSOCIATED WITH YIELD IN 2 — AND 6 — ROW BARLEY CULTIVARS

摘要:

本文对二棱啤酒大麦和四棱啤酒大麦与产量有关的几个性状进行了比较,并对产量构成因素进行了通径分析。在产量构成因素中,二棱品种以粒数/穗对产量直接通径系数最大(P=0.7974),四棱品种直接通径系数最大的是千粒重(P=0.6483)。结果认为二棱品种产量育种的主攻目标是粒数/穗,四棱品种为千粒重。

Abstract:

Field experiments were conducted to compare 2-row with 6-row barley cultivars for the characters associated with yield, and to carry out path-coefficient analysis of yield components in these two types respectively in 1985. The results showed that the direct effect of number of grains per spike to yield was strongly positive (P=0.7974) in 2-row cultivars, and of 1000-grain weight (P=0.6483) in 6-row cultivars, It was thus concluded that numbes of grains per spike and 1000-grain weight might be valuable breeding objectives for yield improvement in 2-and 6-row barley cultivars respectively.