基于混合模型分析柞蚕蛹食味关键理化指标的遗传特性OA

[Objective]5'-IMP and Glu are key physicochemical indicators that affect the taste of tussah pupae and they were studied based a mixed model.[Method]The study used the variety Liaocan Da 9 with high 5'-IMP and Glu content as the female parent and the variety Jiqing with low 5'-IMP and Glu content as the male parent,construct a four generation genetic population of P1,P2,F1,F2.The mixed genetic model of major genes plus polygenes was used to analyze the hereditary law of 5'-IMP and Glu content in tussah pupae.[Results]The 5'-IMP content is controlled by the additive effects of two pairs of major genes(2MG-EA),with a major gene heritability of 76.59%,the Glu content is controlled by an additive dominant effect of one pairs of major gene(1MG-AD),with a major gene heritability of 94.54%,which indicates that in the practice of tussah breeding,efficient genetic improvement can be achieved through early phenotype selection for taste traits.[Conclusion]The research results provide a basis for subsequent gene locating and mining of key physicochemical indicators related to the taste of tussah pupae.