Line x Tester Analysis for some Morpho-Physiological Traits in Bread Wheat

Six wheat genotypes (three each females and males) were crossed for the study of some morpho-physiological traits. Kohistan-97 and MH- 97 showed the highest negative GCA effects for epidermal cell size and stomata size, respectively. Highest positive GCA estimates for number of tillers per plant, number of grains per spike and grain yield per plant were obtained in Chakwal-86, while Barani-83 showed highest positive GCA effects for flag leaf area. Hybrid Kohistan-97 x MH-97 exhibited negative SCA effects for stomata size and epidermal cell size. Cross combination Kohistan-97 x Pasban-90 showed highest positive SCA effects for number of tillers per plant, number of grains per spike and grain yield per plant. About 55% of the hybrids showed positive SCA effects for number of grains per spike, grain yield per plant and 67% for flag leaf area and number of tillers per plant. While 44% hybrids exhibited positive SCA effects for stomata size and epidermal cell size. These crosses may prove useful in future breeding programme.