1Cytogenetics and Molecular Biology Laboratory, Department of Botany, J.N. Vyas University, Jodhpur-342005, Rajasthan
2Department of Biology, University of Mazandaran, Babolsar, Iran
3Plant Biotechnology Laboratory, Department of Biotechnology and Bioinformatics, North-Eastern Hill University, Shillong-793022, Meghalaya
*Author for Correspondence: srrao22@yahoo.com; srrao@mail.com
Cyamopsis tetragonoloba (Linn.) Taub (Fabaceae) is an important commercial crop of India. It is a multipurpose including gum-yielding, drought tolerant, kharif pulse crop grown on light textured soils of arid and semi arid regions. C. tetragonoloba is cytogenetically poorly understood. The 15 accessions originating from various regions of India, were investigated to ascertain the nature and extent of genotype differentiation, if any, in the meiotic details at diplotene, diakinesis, metaphase I, anaphase I and anaphase II. The accessions did show suitable variations with respect to meiotic pairing properties and recombination index. Eight accessions, for example, were well differentiated from the remaining seven accessions by the presence of quadrivalent(s) in otherwise diploid species and so on. The present input will have an important role in the improvement programme of the crop.
Accessions, Chaisma frequency, Chromosome associations, Cyamopsis tetragonoloba, Variation
