豇豆(Vigna unguiculata, L.) F2和F3代花荚颜色遗传的分离Walp)。

Manimozhi Selvi V, Amutha R, A. Nirmalakumari
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摘要

豇豆(Vigna unguiculata L. Walp)是一种多用途、未充分利用的豆科作物,主要生长在干燥的热带地区。它是最重要的食用豆科作物之一,在其野生和栽培形式中表现出相当大的形态变异。本研究以豇豆4个亚种间杂交(RC101×Vyjayanthi, rc101x Vellayani jyothica, ACM 05-02×Ettumanoor local和ACM 05- 07x Vyjayanthi)的f1、f2和f3代为材料,研究了f2和f3代花荚颜色的遗传模式。豇豆花色和荚果花色的遗传遵循定性模式。紫色花色优于白色花色,而紫色荚色部分优于绿色荚色。2个杂交组合F2代的花色分离率为3紫1白,说明白色花色受单隐性控制。而F2绿色的偏析比;2浅紫色:1个紫色荚果表明紫色荚果部分显性高于绿色荚果,为单基因控制。
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Segregation of Flower and Pod Colour Inheritance in F2 and F3 Generations of Cowpea (Vigna unguiculata (L.) Walp.)
Cowpea (Vigna unguiculata L. Walp) is a multi-purpose, underutilized legume crop mostly grown in dry tropical areas. It is one of the most important food legume crops, exhibits considerable morphological variability in its wild as well as cultivated forms. The present investigation was carried out in F 1 , F 2 and F 3 generations of four inter sub-specific crosses (RC101×Vyjayanthi, RC101× Vellayani jyothica, ACM 05-02×Ettumanoor local and ACM 05-07× Vyjayanthi) of cowpea to study the inheritance pattern of flower pod colour in F 2 and F 3 generations. Inheritance of flower colour and pod colour in cowpea has followed a qualitative pattern. Purple flower colour is dominant over white colour flower whereas, purple colour pod is partially dominant over green pod colour. A segregation ratio of 3 purple: 1 white flower colour in F2 generation of two crosses indicated that white flower colour is controlled by single recessive. Whereas segregation ratio of F2 1 green; 2 Light purple: 1 purple colour pod indicated that purple colour pod is partially dominant over green pod colour and it’s governed by single gene.
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