CYTOLOGIA
Online ISSN : 1348-7019
Print ISSN : 0011-4545
Cytotypes and Phenotypes in Ocimum sanctum-Their characteristics
T. P. SinghA. K. Sharma
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JOURNAL FREE ACCESS

1981 Volume 46 Issue 4 Pages 723-729

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Abstract

Chromosomal investigation was carried out on 8 populations of Ocimum sanctum L., of which 34 chromosomes in somatic cell is a new report for the species. Mitotic and meiotic studies were made in the three common cultivars of this species found in India. No correlation could be established between the chromosome number and the phenotypes of the species. Inspite of the phenotypic variation and variation in chromosome number, the number of nucleolar chromosomes was always observed to be 4 in all the populations. However, minor structural differences do exist among them which vary from population to population. The presence of the constant number of 4 satellited chromosomes in all the populations studied suggests that they may contain certain vital genes for the survival of the species. It is also suggested that cytotypes with 34 and 36 chromosomes owe their origin to cells having 34, 35 and 36 chromosomes met with in some of the populations.
This study was supported by the grant of CSIR, New Delhi.

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© The Japan Mendel Society
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