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The cross betweenPhaseolus aureus Roxb. andP. Mungo L.

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Abstract

P. aureus andP. mungo were crossed reciprocally. Viable seeds were produced only in theP. aureus ♀ xP. mungo ♂ combination. The pollen fertility in the F1 was 30.7%. Colchicine induced fertile amphidiploid (83% pollen fertility) was of the gigas type. The isolating barriers sterility and between these two species are: hybrid inviability, weakness, sterility and breakdown. The strength of the isolating mechanisms varies depending upon the nature of the female genotype. The haplontic hybrid sterility is chromosomal in nature. The genomic notation AA has been proposed for the two species. The role of translocations and inversions in chromosome differentiation and in the establishment of a sterility barrier has been discussed.

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  1. Department of Cytogenetics & Plant Breeding, University of Kalyani, Mohanpur Nadia, West Bengal, India

    S. Dana

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  1. S. Dana
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Dana, S. The cross betweenPhaseolus aureus Roxb. andP. Mungo L.. Genetica 37, 259–274 (1966). https://doi.org/10.1007/BF01547138

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  • DOI: https://doi.org/10.1007/BF01547138

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