Estimation of Genetic Variability, Heritibility and Correlation for Some Morphological Traits in Spring Wheat

Abstract

This study was conducted to assess correlation among the six wheat genotypes and their nine crosses at cool climatic conditions of Rawalakot, Azad Jammu & Kashmir. High heritability was observed in flag leaf area, peduncle length and spike length, whereas 1000-grain weight, number of spikelets per spike and plant height showed moderate heritability. Peduncle length, grain yield and plant height, flag leaf area and days to 50% heading showed low genetic advance. Positive direct effect was observed by flag leaf area, numbers of tillers per plant, plant height and number of spikelets per spike while days to 50% heading, number of spikelets per spike and 1000-grain weight showed direct negative effects on yield. High genotypic and  phenotypic  variability  was  observed  by  plant  height,  peduncle  length  and  grain  yield  per  plant. Values of phenotypic coefficient of variation (PCV) were higher than genotypic coefficient of variation (GCV) for all the traits under study.

Key words: Spring Wheat, Heritability, Genetic Variability, Correlation and Flag leaf.