Genetic analysis of yield and its contributing characters in bread wheat Triticum aestivum L

Abstract

The present investigation entitled Genetic analysis of yield and its contributing characters in bread wheat newline(Triticum aestivum L.). was undertaken to collect information on genetic parameters for yield and its components from a newlineten parents diallel mating design in bread wheat at Crop Research Centre, Sardar Vallabhbhai Patel University of newlineAgriculture and Technology, Meerut (U.P.) during Rabi 2021-22 and 2023-24. The experimental material was comprised of newline10 diverse parents and their 45 F1s excluding reciprocals of a diallel cross. All genotypes were evaluated in a complete newlinerandomized block design with three replications. The data were recorded on eleven characters i.e., days to flowering, days newlineto maturity, plant height, number of productive tillers, spike length, spikelets per spike, and number of grain per spike, newlinebiological yield per plant, 1000 kernel weight, harvest index and grain yield per plant. The data were recorded subjected to newlinevarious statistical analyses. Analysis of variance for parents and crosses recorded highly differed significantly for all the newlineattributes namely, days to flowering, days to maturity, plant height, number of productive tillers, spike length, spikelets newlineper spike, and number of grain per spike, biological yield per plant, 1000 kernel weight, harvest index and grain yield per newlineplant, while parent vs crosses had highly significant for all the characters, indicated that presence of wide differences newlineamong the parents and F1 s hybrids. High heritability accompanied with high genetic advance as percent of mean was newlinenoted for number of productive tillers, spike length and grain yield per plant, indicating that these attributes were highly newlineheritable and selection of high performing genotypes is possible to improve these characters. Grain yield exhibited newlinesignificant positive correlation with grain per spike, followed by harvest index and biological yield per plant at genotypic newlineand phenotypic level. These characters may be considered as important yield component in bread wheat.