Genotype x environment interaction for forage yield and its components in oats (Avena sativa L.)

Abstract

The present investigation was carried out to study stability performance over six environments for forage yield and its components in 12 genetically diverse genotypes of oats using a randomized complete block design. The partitioning of (environment + genotype x environment) mean squares showed that environments (linear) differed significantly and were quite diverse with regards to their effects on the performance of genotypes for forage yield and its yield components. Stable genotypes were identified for wider environments and specific environments with high per se performance (over general mean) for forage yield ha-1. The investigation revealed that the genotype SKO-90, SKO-96 and Sabzaar were desirable and stable across the environments. Other genotypes SKO-148, SKO-160, SKO-166 and SKO-167 were found to be suitable for favourable situations, while genotype SKO-20 was responsible to poor environments for forage yield.

Keywords

• g x e interaction
• stability analysis
• forage yield
• oats