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本试验着重研究不同突变体配对后的F_1部分性状的遗传优势。试验表明,用突变体小麦产生的F_1的优势普遍存在,正向优势占一半以上。不同性状优势表现不一,其顺序是株高>千粒重>单株粒重>穗数。几个性状中亲子关系最密切的是千粒重,其广义遗传力达74.48％。通经分析表明,影响单株产量的主要因素是千粒重,其次为有效穗数和每穗粒数。综合性状分析认为,利用507、469和505等突变体来改良浙麦3号,有可能获得较好的后代。
In this study, we focused on the genetic predominance of F_1 partial traits after mating with different mutants. Experiments show that the advantages of F 1 produced by mutant wheat are ubiquitous and the positive advantage accounts for more than half. The performance of different traits vary in the order of plant height> 1000-grain weight> grain weight per plant> number of ears. Several traits in parent-child relationship is the most important grain weight, its generalized heritability of 74.48%. Through the analysis shows that the main factor affecting the yield per plant is 1000-grain weight, followed by the effective panicle and grains per panicle. According to the comprehensive trait analysis, using mutants such as 507, 469 and 505 to improve Zhemai 3 could make better offspring.