Study of Genetic Variability, Heritability and Genetic Advance in F1 Generation of Tomato

Abstract

The research was conducted at Hazara Agricultural Research Station Abbottabad and Agricultural Research Center Haripur during the year 2013 and 2014 in two sowing seasons. The purpose of present study was to find the Vg,Vp,Ve,PCV,GCV,heritability(Hb) and Genetic Advance(GA) for the traits :Number  of  flowers per cluster(fpc),number  of fruits per cluster(frpc),fruit length(frl),fruit diameter(frd) ,fruit size(frs), plant height(pl.ht) ,Number  of fruits per plant(nof),fruit weight(fwt) and yield per plant(yield/pl). Yield per plant showed highest value of Vg(92698) and Vp (221588) and  Fruits/cluster, fruit length, fruit diameter and flowers per cluster showed lowest value of Vg and Vp.  For all the traits PCV value was higher than GCV. Little difference was found among GCVand PCV for the traits like plant height, fruit diameter, fruit size and fruit weight. There is high difference between GCV and PCV for the parameters like Number fruit per clusters, Number of flowers per cluster and yield per plant. High value of heritability percentage was noted in parameters like plant height (91.34%), fruit diameter (90.22%), fruit size (93.53%), Number of fruits per plant (83.69%) and fruit weight (83.69531). Low value of heritability was noted for fruits per cluster, flowers per clusters and yield per plant. Highest genetic advance (91.94%) was noted for the trait, No of fruits per plant which is coupled with high heritability.

Keywords: Tomato,Genetic Variability,Phenotypic Variability, V,PCV,Heritabilty,Genetic Advance