Meiosis in Allotetraploid of Vigna mungo×V. umbellata Cross

Abstract

Allotetraploids of Vigna mungo×V. umbellata species cross had 81.2% pollen fertility and produced many viable seeds. The average chromosome association per cell at diakinesis and at MI in them were respectively 0.08IV+21.53II+0.60I and 0.11IV+21.62II+0.30I. Fertility improvement in this allotetraploid was due to more regular meiosis. Preferential pairing in the allotetraploid was evident from the low frequency of quadrivalent formation.