Garin filling duratio on grain yield enhancement in wheat (Triticum aestivum L)

Abstract

Grain filling duration, the period between heading date and physiological maturity, plays an important role in determining the final grain yield in spring wheat. The variability for grain filling duration and selected agronomic traits were studied in 29 wheat genotypes. Wide genetic variation was observed among the wheat genotypes for all the traits studied. It was observed that earlier heading lines tended to have longer grain filling duration as compared to later heading genotype. Genotypes having shorter grain filling duration were significantly correlated with grain yield and its components 1000- seed weight, Bio- logical yield and plant heights. The results suggested that increasing grain yield in winter wheat was possible through breeding for grain filling parameters.