【作者】 代方银； 鲁成；

【Author】 Dai Fangying Lu Cheng(College of Sericulture,Southwest Agricultural University, The Key Sericulture Laboratory of Agricultural Ministry,Chongqing 400716)

【机构】 西南农业大学蚕丝学院；

【摘要】 以本研究室家蚕基因库保存遗传系统的幼虫斑纹为观察对象,发现暗色斑（P^M）、黑缟斑（p^s）、杲蚕（U）、鹑斑（q）、褐圆斑（L）均存在斑纹浓淡程度不同且表型稳定的多型系统.根据杂交后能够识别浓淡型性状分离,将暗色斑分成浓型(P^M3) 、中型(p^M2)和淡型(P^M1),黑缟斑分成浓型(P^S2 )、淡型(P^S1),杲蚕分成浓型（U²）和淡型（U¹）,鹑斑分成浓型（q³）、中型（q²）和淡型（q¹）,褐圆斑分成浓型（L²）和淡型（L¹）。同种斑纹内浓淡型间相互杂交,整体上均表现为等位基因的遗传模式,相对的浓型对淡型为显性,即:P^M3>P^M2>P^M1,P^S2>p^S1,U²>U¹,q³>q²>q¹,L²>L¹。更多还原

【Abstract】 Through observing the larval stripe of genetic system conserved by our laboratory silkworm gene library. We found pM籶s,U,q and L existed different light and shade of stripe and stable phenotype several type systems. According to the fact that light and shade segregation can be distinguished between each other after hybridizing, pM was divided into shade(pM3),moderate c(pM2) and light (pM1) type;pswas divided into shade(ps2) and light type(ps1) ;U was divided into shade (U2) and light type(U1) type;q was divided into shade (q3), moderate (q2) and light type(q1);L was divided into shade (L2) and light type (L1). The shade and light of same stripe hybridize each other. The whole shows allelic pattern, contrasting shade is dominance to light,ie. pM3>pM2>pM1,pS2>ps1,U2>U1,q3>q2>q1, L2>L1.更多还原