Disomic and Tetrasomic Inheritance in a Solanum Hybrid

Abstract

IN the course of a cytogenetic study of the nature of differentiation of diploid species (2n = 24) of the section Tuberarium, genus Solanum, the mode of inheritance of three loci could be followed in a cross between S. macolae and S. simplicifolium, two species of the series Tuberosa occurring in Bolivia and Argentina. The simplicifolium parent used in the cross had simple leaves, a prominently winged stem and white corolla, in contrast to the compound leaves, rudimentary stem wing and purple corolla possessed by the macolae parent. Except for corolla colour in macolae, the two species bred true for their characters. The macolae parent was found to be heterozygous for P, a dominant factor necessary for the formation of purple colour in the corolla.

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References

  1. 1

    Swaminathan, M. S., and Howard, H. W., Bibliographia Genetica, 16, 1 (1953).

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