Genetic architecture of yield and its components in wheat (Triticum aestivum L.)

Abstract

The genetic analysis of wheat (Triticum aestivum L.) was carried out twenty three wheat germplasm and two released wheat variety under irrigated normal soil condition to determine mode of inheritance of yield and its contributing traits. The data was recorded on twelve characters viz, such as days to 50% flowering, flag leaf area, plant height ,tiller per plant, spike length per plant, number of seed per spike, days to maturity, biological yield per plant ,harvest index (%), 1000 grain weight(g.) and grain yield per plant(g.).The variation due to treatments was significant for all the characters. All the 25 genotypes showed vast range of variation for all the 11 characters under consideration. Genotypes such as HRWYT-31 produced highest grain yield per plant followed by STEMRRSN6108, HD-2967 and PBW-502 these four genotypes significantly out yielded genotypes. The maximum heritability of was recorded for biological yield per plant, grain yield per plant, harvest index, number of seed per spike, flag leaf area, plant height and tiller per plant . Heritability estimates indicating for chance for selection of better genotypes with respect to these characters. Grain yield per plant showed positive and highly significant correlation with tiller per plant and biological yield per plant.