家蚕若干数量性状的遗传通径网络

以10个中、日、欧系原种供试,每品种饲育3区,调查有关性状.对茧层重、蛹体重、全茧重、茧层率、万蚕收茧量、万蚕茧层量、造卵数、产卵数和产卵效率等9项性状作了遗传通径分析,并根据性状间的相互关系,将各别的通径图有序地连接起来,形成通径网络.对遗传通径网络在育种工作中的应用作了初步论述.

A network of genetic path of some quantitative characters in the silk- worm, Bbmbyx mori

Ten Original races of Chinese, Japanese and European line were used as experimental materials. Each of them was reared in three sections. The related quantitative characters were measured. Analysis of genetic path were carried out based on nine basic characters, cocoon shell weight, pupa weight, whloe cocooa weight, cocoon shell percentage, cocoon production per ten thousand larvae, number of mature eggs in oviducts, number of eggs laid by per mother moth and egg-laying efficiency. A network of genetic path was made by connecting every path map in sequence according to the correlation among these characters. And also it was discussed how to apply this network on the silkworm breeding.