Karyomorphological Studies in the Genus Capsicum Linn

抄録

Comparative karyomorphological analysis of 21 types belonging to nine species of Capsicum revealed conspicuous intra- as also inter-specific variations. All types had 2n=24 chromosomes though they differ in the number of SAT-chromosomes. Total length of the complement was maximum in pubescens and minimum in testiculatum. Difference in longest and shortest chromosomes of a complement was highest in pendulum. Number of homobrachial chromosomes was more in wild and semiwild species whereas in cultivated species heterobrachial chromosomes were relatively more. Overall consideration of these observations suggests relatively symmetrical karyotypes in wild and semiwild species probably due to highly restricted distribution within the narrow ranges around centre of origin. On the contrary, cultivated species cover extensive areas and wide ranges of ecological habitats, resulting in relatively asymmetrical karyotypes.