Genotype x Environment Interactions for Forage Productivity in Oats (Avena sativa L.)

Abstract

Stability parameters in 33 oat genotypes were studied to obtain information on the magnitude and nature of
G x E interactions and stability for forage yield. These genotypes evaluated under three environments i.e. E1
(2006-07), E2 (2007-08) and E3 (2008-09), depicted significant interaction with the environments for both green
fodder and dry matter yields. OS 7, a high yielding genotype and responsive to favourable environment, was
found to be the most unstable one for both the characters. The high yielding genotypes which were stable over
environments and responsive to favourable conditions included JHO-851, OS-297 and OS 293. The genotypes
OS 311, OS 315, JHO 2000-6 and JHO 2000-2 were high yielding, responsive to poor environment and least
deviating from regression while UPO 271 was found to be high yielding, responsive to average environment
and stable one