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Cytological studies on f 1 hybrids of solanum integrifolium with solanum melongena and solanum melongena var incanum

Cytological studies on f 1 hybrids of solanum integrifolium with solanum melongena and solanum melongena var incanum

Genetica 59(2): 127-132

S. integrifolium (2n = 24) can easily be crossed as the pistillate parent with S. melongena (2n = 24) and S. melongena var. incanum (2n = 24). However, crosses in the other direction do not succeed. Both hybrids are vigorous. Chromosome association at diakinesis and metaphase I was studied. Chromosome associations higher than bivalents were observed in the hybrids indicating structural repatterning of chromosomes. The modal chromosome association in hybrids was 12 bivalents/PMC [pollen mother cell]. This is suggestive of the retention of ancestral chromosome homelogies by the taxa concerned. Despite regular meiosis both hybrids were highly pollen-sterile (about 95%), which was attributed to segregational events of the recombined chromosomes.

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Accession: 005086987

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