Indian Society of Genetics & Plant Breeding

Karyomorphological studies in the genus Catharanthus

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Karyomorphological studies of Catharanthus pusillus and
six varieties of Catharanthus roseus (L.) G. Don showed
same diploid chromosome number i.e. 2n = 2x = 16. There
was uniformity in the chromosome complement in all the
types investigated. Based on total chromatin length
feature, C. pusillus and white with red eye flowered variety
of C. roseus revealed to be primitive and advanced
respectively. Overall, white flowered variety of C. roseus
was considered most advanced on account of its lower
Symmetry Index percent value, Total Form percentage and
Form percent value.

Keywords: Catharanthus pusillus, Catharanthus rosvus, chromosome, karyotype


Year: 2011
Volume: 71
Issue: 1
Article DOI: N/A
Print ISSN: 0019-5200
Online ISSN: 0975-6906



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