Asynapsis in cluster bean (Cyamopsis tetragonoloba (L.) Taub.).

Asynapsis was noticed in a line G 150 of cluster-bean. In meiotic studies 14 univalents were observed at diakinesis and all subsequent meiotic stages were highly irregular. The asynaptic plants produced highly sterile pollen and there was very rare seed setting. The asynapsis was controlled by a single gene that was recessive to that for normal meiosis.