EFFECTS OF CHANGING ENVIRONMENT ON WHEAT DRY MATTER YIELD
PREETI, I. S. PANWAR* AND R. K. ARYA
Wheat and Barley Section,
Department of Genetics and Plant Breeding,
CCS HAU, Hisar -125004 (Haryana), India
*(e-mail : isp.panwar@gmail.com)
(Received : 24 May 2016; Accepted: 27 June 2016)
SUMMARY
A set of 42 genotypes of bread was grown in four different environments at the experimental area of Wheat and Barley Section, Department of Genetics and Plant breeding, CCS Haryana Agricultural University, Hisar during rabi season 2012-13, to identify of stable genotypes. The considerable genetic differences among genotypes for various traits were evident in all the four environments. From the mean performance of the genotypes for different quantitative traits based on all the four environments, it appeared that genotypes, HD 2967, DBW 17, WH 542, PBW 343, WH 711, DPW 621-50 and C-306 were promising for dry matter yield. Analysis of variance for phenotypic stability indicated that both linear and non-linear components contributed to total G×E interaction for all the characters. However a major portion of G×E was accounted by non-linear component for dry fodder yield per plant. The linear portion was higher for days to maturity. However, the genotypes WH 1098, WH 1126, PBW 343, WH 1081, WH 542 and HD 2851 were found stable for dry matter yield in all the environments because they had above average mean, âi value equal to zero and non-significant S2di value. It means that these were less responsive to the environmental changes and therefore, more adaptive.
Key words:Combining ability, heritability, genetic advance, breeding programmes