Genetic study for improvement of various yield attributing traits in wheat

Present study was conducted in the Department of Plant Breeding and Genetics, College of Agriculture, University of Sargodha during the year 2015 -16 to calculate the heritability, heterosis and heterobeltiosis among 40 F1 hybrids developed from crossing diverse parents. Results showed that Millat-11×UAF1057 had the highest heritability for number of grains spike-1 (89.4%) followed by Seher-06 × Galaxy-13 (89.22%) for 1000-kernel weight and grain yield plant-1.The cross CIM-130 (2012-13) × Millat-11 showed the highest heterosis for peduncle length (74.49%). CIM-54 2012-13 × SA42/Shafaq showed high heterosis for number of spikes plant-1 (41.05%). The cross Galaxy-13 × Pb-11 showed high heterosis for number of spikelets spike-1 (27.88%).The cross (Galaxy-13 × UOS-540) showed high heterosis (55.23%) and heterobeltiosis (54.59%) for 1000-grain weight and 55.41% and 54.84% for number of grains spike-1 (27.88%). The cross (Inq-91/Prl/Fsd-08 × Lyp-73) showed high mid parent heterosis for grain yield plant-1 (89.27%) and over better parent (45.51%). The cross (Pb-11×CIM E-5 201213) showed high heterobeltiosis for number of grains per spike (54.84%) and 1000 grain weight (54.59%). The cross combination AARI-11 × Galaxy-13 showed highest negative heterobeltiosis for days to heading (-3.65). Pb-11 × Galaxy-13 showed highest negative heterobeltiosis for days to maturity (-4.74%). Pb-11×Millat-11 showed high positive value of heterobeltiosis for grain yield plant-1 (53.56%). It was concluded that crosses showing high heritability for yield attributing traits should be selected and moved further for varietal developmental procedure. with PGPR.