甜瓜糖酸性状的遗传研究

 以新疆厚皮甜瓜‘76-2’的⁶⁰Co- γ射线诱变酸味突变自交系和‘黄皮脆’形成的P₁、P₂、F₁与F₂ 为试验材料，通过4个世代联合分析法研究果实中糖含量、酸含量和糖酸比的遗传特点。结果表明, 酸味突变自交系ב黄皮脆’组合的糖含量性状遗传受两对等加性主基因和加性显性多基因模型 (E-4) 控制，主基因遗传率为88.8%，多基因遗传率为6.94%；酸含量性状遗传受一对加性—显性主基因和加性—显性上位性多基因 (D-0)模型控制，主基因遗传率为26.68%，多基因遗传率为72.77%；糖酸比性状遗传受两对加性—显性—上位性和加性—显性多基因混合遗传模型（E-1）控制，主基因遗传率为82.86%，多基因遗传率为16.02%。

Genetic Study on Sugar and Sour Traits of Melon (Cucumis melo L.)

Four generations of P₁, P₂, F₁ and F₂ were used to study the inheritance of melon sugar content、sour content and sugar acid radio traits in mutation inbred line with sour taste (76-2 by ⁶⁰Co- γ irradiation) and 'Huangpicui' by joint analysis method of multiple generations. The results showed that the sugar content was controlled by two pairs of equal additive major genes plus additive-dominant polygene (E-4 model). The major gene heritability is 88.8%; the polygene heritability is 6.94%. The inheritance of sour content fitted one pair of additive-dominance major gene plus additive-dominance-epitasis polygene (D-0 model). The major gene heritability is 26.68%; the polygene heritability is 72.77%. Sugar acid radio trait fitted two pairs of additive-dominance-epitasis major genes plus additive-dominant polygene (E-1 model). The major gene heritability is 82.86%; the polygene heritability is 16.02%.