Agronomic performance of maize genotypes under high temperature condition

High temperature is an important constraint of yield reduction in maize. To identify high grain yielding maize genotypes under high temperature condition, field experiments were conducted at Parwanipur (Bara), Nepalgunj (Banke) and Rampur (Chitwan) during summer seasons of 2010 and 2011. The 44 genotypes were evaluated in randomized complete block design with three replications. The pooled analysis over locations showed that TLBRSO7F16 produced the highest grain yield with shorter anthesis silking interval (ASI) and bigger cob length (2809 kg/ha, 3.3 days, 14.43 cm) followed by RPOP-4 (2417 kg/ha, 1.8 days, 13.66 cm), TLBRSO7F14 (2316 kg/ha, 3 days, 14.25 cm), BLSBSO7F10 (2159 kg/ha, 2.2 days, 14.42 cm), Manakamana-3 (2108 kg/ha, 2 days, 14.75 cm) and Upahar (2108 kg/ha, 3.5 days, 14.33 cm). Therefore, it was concluded that TLBRSO7F16, RPOP-4, TLBRSO7F14, BLSBSO7F10, Manakamana-3 and Upahar were best genotypes under high temperature conditions at terai region of Nepal.