Evaluation of different rice genotypes for physiological and yield attributes under agro-climatic conditions of swat region Khyber Pakhtunkhwa

The experiment aims to evaluate different rice genotypes under agro-climatic condition to study physiological and grain yield contribution. Six genotypes and one variety i.e. Fakhr-eMalakand (check variety), IR64, IR8225-9-3-2-3, PK344-3-2, Cibogo, Japonica, and OM5627 were evaluated in a randomized complete block design (RCBD) with three replications. Various morphological characters were measured i.e. days to 50% flowering, days to maturity, flag leaf area (cm2), plant height (cm), panicle length (cm), tiller hill-1, 1000-grain weight (g) and grain yield ton ha-1 with highly significant results (71, 121, 12.6 (cm2), 104.8 (cm), 20, 28.63 (cm) and 9.629 (ton ha-1). IR64 produced a higher number of tillers hill-1 (20) while OM5627 produced highest 1000-grain weight (28.63 g). The genotype Fakhr-e-Malakand (checked variety) has high grain yield (9.629 ton ha-1) followed by IR64 (9.29 ton ha-1) while minimum yield recorded in Japonica 5.988 ton ha-1. IR64 (9.29 ton ha-1) genotype produced higher grain yield than remaining genotypes i.e. PK344-3-2 (8.945 ton ha-1), IR8225-9-3-2-3 (8.228 ton ha-1), OM5627 (7.289 ton ha-1), Cibogo (6.820 ton ha-1) and Japonica (5.988 ton ha-1) respectively. The result showed IR64 genotype will be further investigate in the farmer's field for the final approval as a commercial variety under agro-climatic condition of the swat region.