【摘要】 对棕色棉H39和长绒陆地棉陆长3号杂交后代的5个性状进行遗传参数估计,结果表明,衣分的变异度较大,为加性-显性遗传;单株铃数和衣分的遗传率和遗传变异系数都较大,可以在早代进行选择;单株铃数、单铃重、衣分、籽指和纤维长度的最少基因对数都较少,有利于从后代中选出具有目标性状的植株;相对优势率表明,这5个性状在不同程度上存在着杂种优势。更多还原

【Abstract】 The estimation of genetic parameters of five traits for hybrids of brown cotton H39 and long-staple upland cotton Luchang 3 showed that,the lint percentage had the greater variation and was additive-dominant genetic;The genetic ability and genetic variation coefficient of the bolls per plant and lint percentage were bigger than the other traits.The two traits could choose in early generation;The minimum number of genes of the bolls per plant,boll weight,lint percentage,seed means and fiber length were all less than the other traits so that was beneficial to selecte the plants with target traits from future generations.The results of relative rate advantage and comparative advantage index showed that these five traits had heterosis in different degrees.更多还原