Genotype by environment interactions in barley (Hordeum vulgare L.): different responses of landraces, recombinant inbred lines and varieties to Mediterranean environment

Abstract

Genotype-by-environment interactions (GEIs) can affect breeding progress because they often complicate the evaluation and selection of superior genotypes. This drawback can be reduced by gaining insights into GEI processes and genotype adaptation. Here, we have studied the GEIs over a set of 24 barley genotypes that were grown across six environments (location-by-year combinations) in Sardinia, Italy. Three groups of genotypes were analysed: barley landraces (LANs), recombinant inbred lines (RILs), and commercial varieties (VARs). The additive main effects and multiplicative interaction (AMMI) model was used for data analysis, and results evidenced no significant differences in grain yield averages for the 24 genotypes. However, there was a relevant GEI for yield mainly between two of the six environments (one characterised by warm pre-anthesis period and high spring rainfalls, and the other characterised by opposite features) and two groups of genotypes (VAR and LAN). Moreover, a negative trade-off between yield levels of genotypes was seen when the barley genotypes were grown in the contrasting environments. Overall, intermediate GEI levels were seen for RILs in comparison to LANs and VARs, and some of the RILs provided valuable yield levels (e.g. RILs 23 and 52). The results thus show the potential usefulness of LANs as a genetic resource for breeding, e.g. to obtain genotypes adapted to Mediterranean environments, such as the RILs analysed in this study.

Grain yield stability of barley genotypes in uniform regional yield trails in warm and semi warm dry land area

“…Genotype×environment interactions have been defined as a failure of genotypes to achieve the same relative performance in different environments (Baker, 1988). Analysis of genotype×environment interactions on grain yield and estimation of phenotypic stability in barley and other crops has been widely studied (Voltas, et al 1999;Mohammadi and Mahmodi, 2008;Rodriguez, et al 2008;Ahmadi, et al 2012;Mladenov et al 2012;Mohammadi et al 2013;Mortazavian, et al 2014;Sarkar, et al 2014;Karimzadeh et al 2016;Birla and Ramgiry, 2015;Vir and Sultan, 2012;Sahay and Sarma, 2005). There are two major approaches to studying genotype×environment interactions and determining the adaptation of genotypes (Huen, 1996).…”

Paprastojo žieminio kviečio (Triticum aestivum L.) veislių derliaus svyravimo erdvinio panašumo Vakarų Lenkijoje analizė

“…Studies of the genotype-environment interaction are focused on the evaluation of cultivars in respect of yield stability and on their division into groups on the basis of narrow or wide adaptation (Samonte et al, 2005;Navabi et al, 2006;Gauch et al, 2008;Rodriguez et al, 2008;Roozeboom et al, 2008). Among the cultivars recommended for growing, also those genotypes are often regarded as desirable which are narrowly adapted to a defined environment and which display high repeatability of yields in years (Jankowski et al, 2006;Drzazga et al, 2009).…”

AMMI model to analyse GxE for dual purpose barley in multi-environment trials

“…The differences in main effects reflected by displacement along the abscissa, whereas the positions along the ordinate differentiates the interaction effects (Rodriguez et al, 2007). Genotypes G4(UPB 1036), G7(BH 971) and G12(UPB 1035) with IPCA1 scores close to zero have small interactions and have wider adaptation to the tested environments (Mohamadi et al, 2010).…”