Chromosome Botany
Online ISSN : 1881-8285
Print ISSN : 1881-5936
ISSN-L : 1881-5936
Genetic system of two rainy season weeds: Commelina benghalensis L. and Commelina caroliniana Walter
Veenu KaulA. K. KoulNamrata Sharma
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2007 Volume 2 Issue 3 Pages 99-105

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Abstract
Commelina benghalensis L and C. caroliniana Walter, two allied weedy species of the Commelinaceae vary in their breeding and meiotic systems. The former is predominantly auto- and the latter facultatively xenogamous. Meiotic system of C. caroliniana also provides for higher recombination index, characterized as it is by high chromosome number and higher chiasmata frequency: On the contrary C. benghalensis has fewer chromosomes and closed breeding system for which reason it generates little genetic variability. This difference qualifies C. benghalensis as a “specialist” and C. caroliniana as a “generalist”
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© 2007 International Society of Chromosome Botany
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