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本文通过对五个梨杂交组合的调查材料的分析表明:梨皮色遗传方面不存在褐色对绿色或者绿色对褐色的显隐性规律;梨杂交后代果实大小的遗传受亲本果实大小的影响,亲本较大的,后代果实也较大,亲本小的后代也小,总的遗传变异倾向是果实减小,纵轴变短,品质和风味变劣,可溶性固形物含量减少,但都出现了一定比例的超双亲株。个别组合(鸭梨×麻梨)的杂交后代可溶性固形物含量超过亲中值,优株率达到50%。
In this paper, the investigation of the hybrids of five pear cultivars showed that there was no obvious recessive pattern of brown to green or brown to brown on the genetic basis of pear color. The fruit size of the offspring of pear hybrid was affected by the size of the parent fruit. Larger, offspring fruit is larger, the progeny of small offspring is also small, the general tendency of genetic variation is to reduce the fruit, the longitudinal axis becomes shorter, quality and flavor deterioration, soluble solids content decreased, but there have been a certain percentage Of super parents. Individual combinations (pear × × pear) hybrid progenies soluble solids content exceeds the median pro-rate, excellent strain rate of 50%.