Meiotic Behaviour of Cajanus cajan × Vigna mungo Hybrid

抄録

Meiotic behaviour of intergeneric hybrid between Cajanus cajan and Vigna mungo isreported for the first time. A majority of the meiocytes had normal meiosis but the frequency of ring bivalents was low. In some, univalents, trivalents, quadrivalents, unequal chromosome distribution and laggards were also observed. The hybrid showed very high pollen and seed sterility, which was attributed to both genic causes and abnormal chromosome behaviour. Formation of bivalents in high frequency suggested that the genomes of C. cajan and V mungo might be similar and gene exchange is possible.