Ecology, Environment and Conservation Paper

STUDY OF GENE ACTION FOR YIELD COMPONENTS AND GLUTEN CONTENT IN BREAD WHEAT (TRITICUM AESTIVUM L.)

Pradeep Kumar, Satnam Singh Nagar, Y. P. Sing, Dinisha Abhishek and Ravi Kumar

Abstract

Knowledge of gene action plays an important role in any breeding programme to manipulate genetic architechture of a genotype. The present study was carried out to determine the nature of gene action in a 10 x 10 diallel cross analysis excluding reciprocals. The experiment was conducted at Crop Research Centre of Sardar Vallabhbhai Patel University of Agriculture and Technology, Meerut, (UP) in randomized complete block design (RCBD) using three replications under timely sown condition. Analysis of variance showed highly significant differences among genotype for all the 14 traits under study. The regression analysis using Hayman’s’ graphical approach for all the 14 traits namely; days to 50% flowering, days to maturity, plant height, flag leaf area, peduncle length, spike length, number of productive tillers per plant, number of spikelet’s per spike, number of grains per spike, 1000 grain weight, biological yield per plant, grain yield per plant, harvest index and gluten content revealed that negative intercepts of regression line on Wr-Vr graph indicated an over-dominance type of gene action.