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Further observations on chromosome diversity analysis in wild species of Vigna from India

Author:
Shamurailatpam, Anju, Wahlang, Daniel Regie, Madhavan, Latha, Yadav, Shrirang Ramachandra, Bhat, Kangila Venkataraman, Rao, Satyawada Rama
Source:
Nucleus 2015 v.58 no.3 pp. 225-230
ISSN:
0029-568X
Subject:
Vigna, chromosome number, genes, insects, karyotyping, pests, telocentric chromosomes, India
Abstract:
Ten wild species of Vigna from the Indian gene centre have been karyo-morphologically analysed. All the studied taxa had somatic chromosome number of 2n = 22 except V. glabrescens which had 2n = 44. The chromosomes were found to be either metacentric, submetacentric and subtelocentric in type with their respective chromosome complements, and the complete absence of telocentric chromosomes in all of the taxa studied. The karyotypes of the species were mostly symmetrical. The significance of karyotypic variation among wild species in comparison with the cultivated ones of the genus Vigna has been discussed in detail. Such information has value in understanding cytogenetical relationship amongst these wild species reported to comprise of genes for resistance to insect, pests and diseases.
Agid:
4859405