Pachytene analyses in Atylosia sericea and Cajanus cajan x A. sericea hybrid

Abstract

This is the second in a series of papers dealing with our investigation on interrelationship of Cajanus and Atylosia species as revealed by hydridization and pachytene analysis. In the previous communication we (Reddy 1981) reported that 10 chromosomes are identical in Cajanus and A. lineata in so far as their pachytene morphology is concerned. However, on the basis of pachytene chromosome pairing in the hybrid only 9 chromosomes are common to them. A. lineata is an erect species and shows a high degree of affinity to Cajanus. A. sericea is another erect species which is also close to Cajanus in morphology and somatic karyology (Reddy and De, in press). The present work deals with the pachytene karyomorphology of A. sericea and Cajanus x A. sericea hybrid with a view to ascertain their affinity