Abstract
The effect on genetic constitution by the environment interaction was studied for 13 maize genotypes, during 2012 over four different location of Khyber Pakhtun Khwa i.e. KPK Agricultural University Peshawar, Agricultural Research Station Baffa (Mansehra), Agricultural Research Station, Jamra (Mardan) and Cereal Crops Research Institute, Pirsabak. These experiments were carried out in randomized complete block design with three replication at each location during (July-October) 2012. Data were recorded on different morphological and yield parameters. Analysis of variance indicated significant differences among the four locations for followings traits, such as days to 50% silking, days to 50% pollen shedding, anthesis silking interval (ASI), plant height, ear height, grain moisture at harvest and grain yield per hectare. All the genotypes showed significant differences for almost parameters except anthesis silking interval (ASI), which was non significant across the four different locations. The genotypes x locations interactions also showed significant differences for days to 50% silking, days to 50% pollen shedding, height of plant, height of ear, grain moisture at harvest and grain yield per hectare, while non significant difference was observed for anthesis silking interval (ASI). Based on yield performance of genotypes across the four locations, Baffa ranked first as compared to the other three locations. Hybrid WD-2x8 was the highest yielding across the four locations followed by hybrid Hicorn, while the lowest yield was observed in hybrid CS-King at all the four locations.
