1Department of Plant Breeding, Punjab Agricultural University, Ludhiana, 141004
A strain developed through three cycles of selection for tolerance to nonfreezing cold stress (least yellowing of leaves) in maize (Zea mays L.) cv. Partap was evaluated for per se performance and combining ability in diallel crosses under four environments comprising two locations and two plant densities. It showed significantly less leaf yellowing than Partap, and better general combining ability. However, it did not differ from Partap with regard to freezing injury due to frost.
Zea mays L., maize, population improvement, cold tolerance, combining ability
