板栗杂交后代3个重要经济性状的遗传特点

通过对4个杂交组合417株实生苗的分析,研究了3个经济性状的遗传特点.结果表明:坚果单粒重、刺苞大小和出实率的遗传均符合数量性状连续变异的遗传特点.单粒重和刺苞大小表现同样的遗传趋势,遗传中非加性效应占有很大比重,杂交后代由于非加性效应解体,单粒重量和刺苞大小有变小的倾向.出实率的遗传以加性效应控制为主,杂交后代由于非加性效应累加,出实率有提高的倾向.

Inheritance Characters of Three Economic Characteristics of Crossed Chestnut Progeny

Studies were carried out with 417 seedlings, of 4 crossed combinations for analyzing inheritance characters of three economic characteristics. The results showed that the nut size,bur size and nut rate with the pattern of quantitative character and continuous variation genetic characters. The nut size and bur size had the same inheritance trend,the non-additive effect was great in inheritance of the two characteristic, with in the progeny, nut size and bur size were tended to smaller. There were large proportions of additive gene effect in nut rate inheritance, and the nut rate was trended to lager in progeny with additive action of non-additive gene effect.