梨果实肉质遗传模式的探讨

Genetic Analysis of Flesh Texture in Pear

根据３种类型梨杂交组合后代的遗传表现，提出梨果实肉质遗传模式为：梨果实肉质的脆软肉遗传为质量性状遗传，由Ａ、Ｂ两对基因控制。软肉对脆肉为显性，只有两对基因同时隐性纯合时才表现为脆肉。脆肉基因型为ａａｂｂ，软肉基因型为Ａ＿＿、＿＿Ｂ＿，该模式可解释前人的部分研究成果。

The crispness and softness of flesh texture in pear are qualitative characters, controlled by two genes A, B.S The softness is dominant to crispness, only when two genes are recessive homozygous, the phenotype is crispness. The genotype of crispness is aabb, the genotypes of softness are A____, ___B__. Some factors may affect flesh texture also.