Analysis of new experimental barley genotype performance for grain yield using AMMI biplot

Abstract

Presence of GE interaction reduces the correlation between genotypic and phenotypic parameters and complicates progress of selection. Among several methods proposed for evaluation of the GE interaction, the AMMI model is one of the most commonly used. The objective of this study was to estimate the GE interaction in new barley lines using the AMMI model, and to identify winter barley genotypes with stable and high yield. Multi-location trials with 25 winter barley advanced lines were conducted at four locations. The AMMI model was used to estimate GE interaction. The AMMI analysis of variance indicated that the genotype, environment and GE interaction had significant influence (p lt 0,01) on barley grain yield. Based on AMMI method, G8 and G18 could be recommended for further testing due their high and stable yields.

Interakcija GxE je izvor varijacije koji uključuje uticaj genotipa i faktora spoljašnje sredine, koji otežava izbor superiornih genotipova u procesu selekcije. AMMI analiza predstavalja metod koji se često koristi za ocenu interakcije genotip/sredina. Cilj ovog rada je ocena interakcije genotip/sredina pomoću AMMI modela, i identifikacija genotipova ozimog ječma sa visokim i stabilnim prinosom. Multilokacijski ogledi sa 25 superiornih linija ječma su posejani na četiri lokaliteta. AMMI analizom varijanse je utvrđeno da su genotip, sredina i interakcija genotip/ sredina imali signifikantan uticaj (p lt 0,01) na prinos ječma. Na osnovu AMMI analize, genotipovi G8 i G18 se mogu preporučiti za dalje testiranje usled njihovog visokog i stabilnog prinosa.