Abstract
Chromosome polymorphism inBelamchanda chinensis Dc. of the family Iridaceae, has been explored in detail. The root tip cells exhibited aneusomaty and differences in the morphology of chromosomes. About 70% cells were with 2n=30, 20% cells has 2n=28 and 10% cells were with 2n=32. Critical analysis of 3 typical cells with different chromosome numbers, selected out of several cells studied, exhibited varying proportions of long, medium and short chromosomes and different numbers of metacentric and submetacentric chromosomes. In these cells, while on one hand, all chromosomes could not be grouped in two's on the basis of chromosome morphology, certain chromosome paris were present more than once, on the other hand. The cytological basis of inconstancy in the chromosome complements within the cells of the same tissue and it's significance in the evolution of the vegetatively propagated plants have been discussed.
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Srivastava, A.K., Purnima Numerical and structural inconstancy in the chromosome complements ofBelamchanda chinensis Dc. (Iridaceae). Proc. Indian Acad. Sci. 100, 205–210 (1990). https://doi.org/10.1007/BF03053450
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DOI: https://doi.org/10.1007/BF03053450