Seeds primed with 1% KH2PO4 for 6 hrs produced higher germination both in fresh and aged seeds of all genotypes when compared with other treatments. Among the genotypes, fresh seeds of COH(M) 5 produced the highest germination of 95% followed by UMI 285 (94 %) and UMI 61 (93%), whereas aged seeds of COH(M) 5 recorded the highest germination of 86% followed by UMI 285 (85%) which were on par with each other.