Stability analysis for physiological traits, grain yield and its attributing parameters in oats (Avena sativa L.) in the Kashmir valley

  • Uzma Mehraj, Ishfaq Abidi, Mushtaq Ahmad*, Gul-Zaffar, Z.A. Dar, M.A. Rather and Ajaz A. Lone Sher-e-Kashmir University of Agricultural Sciences and Technology of Kashmir Shalimar campus, Srinagar -191 121
Keywords: G x E interaction, stability analysis, grain yield, oats

Abstract

 

Eleven genotypes of oats were planted at six diverse environments to assess genotype environment interaction and determine stable oat (Avena sativa L.) cultivar in Kashmir division for grain yield using randomized block design during 2014 to 2015. There was considerable variation in grain yield and physiological traits within and across environments. Stability analysis for grain yield was conducted to check the response to Genotype x Environment interactions. The mean squares due to G x E (linear) were significant depicting genetic differences among genotypes for linear response to varying environments. Mean squares due to pooled deviations were highly significant, reflecting considerable differences among genotypes for non-linear response. Out of eleven genotypes, only three oats lines i.e., SKO-98, SKO-166 and Sabzaar, showed non-significant deviation from regression and their regression coefficient values were close to unity and desirable for grain yield across the environments. The cultivar, “SKO-98” with respective regression coefficient value of 1.018, the smallest deviations from regressions (S2di) value (0.025) and the above average grain yield could be considered the most widely adapted cultivar.


 

Author Biography

Uzma Mehraj, Ishfaq Abidi, Mushtaq Ahmad*, Gul-Zaffar, Z.A. Dar, M.A. Rather and Ajaz A. Lone, Sher-e-Kashmir University of Agricultural Sciences and Technology of Kashmir Shalimar campus, Srinagar -191 121

Division of Genetics and Pant Breeding

Sher-e-Kashmir University of Agricultural Sciences and Technology of Kashmir Shalimar campus, Srinagar -191 121

Published
27-03-2017
Section
Research Article