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作 者 ：王学德; 潘家驹

期 刊 ：作物学报 1990年 16卷 01期 页码：32-38

关键词：棉花；遗传距离；杂种优势；

Keywords:Cotton, Genetic distance, Heterosis,

摘 要 ：以棉花芽黄(Virescent)为指示性状辨别真伪杂种,:并采用 NCⅡ(North CarolinaⅡ)交配设计,对56个组合的杂种一代及其15个亲本进行两年(1986—1987)比较试验,研究棉花亲本遗传距离(D~2)与杂种产量优势(MH)的相关。研究结果表明:亲本遗传距离与杂种产量优势有显著或极显著的抛物线回归关系。遗传距离在一定范围内(0≤D~2≤7),杂

Abstract:True and fault hybrids were differentiated by means of virescent indicative character incotton.56 crosses were made between 7 virescent strains and 8 commercial varieties of upland cotton by NC Ⅱ(North Carolina Ⅱ)mating disign.Genetic distance(D~2)amongthe 15 parents and yield midparent heterosis

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