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根据Hayman(1958)方法对4个抗病品种和4个感病品种共8个亲本及其8个半双列杂交组合的F_2代的平均病级进行双列杂交分析,结果表明.棉花对枯萎病的抗性存在加性和显性效应,无上位性,以加性效应为主;抗性呈不完全显性,受一对基因控制,广义、狭义遗传力都高达90％以上。16个抗×感组合的F_2代抗、感植株出现3:1比例分离,亦证实抗性受一对基因控制。抗、感病品种一般配合力差异达极显著水平,抗×感组合特殊配合力普遍低于感×感,抗×抗组合.因而抗病育种以配制抗×感类型组合为佳。
According to the method of Hayman (1958), the average disease grade of F 2 generations of 4 resistant cultivars and 4 susceptible cultivars from 8 parents and 8 semi-double crosses were analyzed by double-row hybridization. The results showed that cotton had the highest resistance to Fusarium wilt There was additive and dominance effect, no epistasis, with additive effect; resistance was not completely dominant, controlled by a pair of genes, generalized, narrow heritability as high as 90%. 16 anti-sense combinations of F 2 generation of anti-sense plants appear 3: 1 ratio separation, also confirmed resistance to a gene control. The general combining ability of the resistant and susceptible cultivars reached extremely significant level, and the special combining ability of the resistant × susceptible combinations was generally lower than that of the susceptible and resistant × resistant combinations.