Vol. 11, Issue 9 (2022)

Author(s):
Vinay Prakash Bagde, Dr. RS Shukla, Shikha Upadhyay and Rahul Sonaniya

Abstract:
The changing climate adversely affect the morphological characters of plant which, ultimate effect the identification of off types in seed production programme. This also leads to effect the genetic purity in seed production programme. To overcome this problem selection of progeny and its breeding depend upon the genetic variability in population. Fifteen varieties of wheat and their fifty four crosses were evaluated in randomized block design (RBD) with three replications for yield components and physiological traits during rabi 2021-22, to find out genetic variability, heritability and genetic advance percent of mean. Significant genetic differences were observed for all the quantitative characters studied, indicating considerable amount of variation among genotypes. Moderate genotypic and phenotypic coefficient of variation exhibited by numbers of tillers per plant, harvest index and flag leaf area value while, number of grains per spike, thousand grain weight and days to maturity showed low PCV and low GCV. All of the traits expressed high heritability except number of grains per spike and spike length. However, biological yield per plant and harvest index and grain yield per plant sowed high genetic advance, which, indicates that the heritability is most likely due to additive gene effect and selection may be effective for these traits. It is also observed that the performance of these characters is not under influence of environment. However, other characters might be effected by the change in climatic condition. Thus, in seed production programme at the time of rouging these characters must be considered to maintain the genetic purity of seed.