Seed Size of Wheat Variety Grown in Multi-Environment

Percent of four seed fractions (2.0 mm, 2.2 mm, 2.5 mm and 2.8 mm) was examined in six locations in the period from 2002 to 2005 for fourteen wheat varieties made in Serbia. Proportion of location variance was higher in the case of genotypic variance and genotype x location interaction variance. Location variance amounting 53.5 % was the lowest in the case of 2.0 mm-seed-size and the highest one amounting 73.5 % in the case of 2.8 mm-seed-size. Contrary to this, genetic variance and genotype x location interaction variance were higher in the cases of smaller seed fractions (2.0 and 2.2 mm) comparing to 2.5 and 2.8 mm-seed-sizes. Larger seed fractions of 2.5 and 2.8 mm-seed-sizes are the most significant in the seed production of wheat. Percent of 2.8 mm-seed-size in the examined locations was as follows: CA>SM>ZA>SO>PA>KI. "11" variety realized the highest seed content of 2.8 mm-seed-size in the 14, PA, SM and CA environments. The highest proportion of 2.8 mm-seed-size fraction had "14" and "8" varieties in the SO and KI locations. Average percent of 2.5 mm-seed-size in the examined locations was as follows: KI>SO>ZA>CA>SM>PA. "13" variety had the highest percent of 2.5 mm-seed-size in ZA, SM, PA and CA locations, while "6" variety had the highest percent of 2.5 mm-seed-size in SO location and "11" variety in KI location. "13" variety had the highest percent of smaller 2.0 mm-seed-size in PA and ZA locations and 2.2 mm-seed-size in SO, ZA, SM and PA locations.