Genotype × environment interaction and stability of grain yield and selected quality traits in winter wheat in Central Asia

Abstract

High grain yield and improved quality determine the commercial success of winter wheat (Triticum aestivum L.) varieties in Central Asia. This study was conducted to determine the effect of environment on grain yield, 1000-kernel weight (TKW), test weight (TWT), protein, and gluten content, and to identify superior wheat genotypes for yield and quality. Thirty winter wheat genotypes were evaluated in 3 years (2010-2012) over multiple locations. A genotype and genotype × environment interaction biplot analysis was used to determine the superior genotypes. There were significant effects of environment and genotype × environment interaction on yield and quality traits. The 30 wheat genotypes showed variations for grain yield (3.7-5.6 t ha-1), TKW (33.6-42.4 g), TWT (753-797 g/L), protein (13.3%-14.8%), and gluten (27.2%-29.5%) content. There was a significant positive correlation between grain yield and TKW in three out of seven environments. There was no correlation of grain yield with TWT, protein, and gluten content with one exception. There were different sets of five most superior genotypes for individual traits. However, certain genotypes were superior based on grain yield and quality traits. Gozgon, Elomon, ID800994.W/Vee//Lagos-12, Jaikhun, and Kroshka were the five most superior genotypes for four quality traits. Elomon, Gozgon, Jaikhun, ID800994.W/Vee//Lagos-12, and Kiriya were the five most superior genotypes based on grain yield, TKW, TWT, protein, and gluten content. This study demonstrates success in wheat breeding for combined high yield and improved quality in winter wheat. This study provides information on the combined stability of high yield and improved quality of the internationally important winter wheat genotypes. Therefore, the results of this study could be valuable for national and international winter wheat breeding programs to develop new varieties with high stable grain yield and quality.

Multi-environment analysis of grain quality traits in recombinant inbred lines of a biparental cross in bread wheat (Triticum aestivum L.)

“…The relative contribution of genotype, environment and GEI in the expression of PC (Saleem et al 2015), PC and TKW (Khazratkulova et al 2015), PC, TKW, and SV (Mut et al 2010), PC, SV, and KH (Surma et al 2012) and SV (Castillo et al 2012) has been studied. These studies indicate that the environment component accounts for a substantial part of the total variance.…”

“…Understanding the effect of environment on trait expression and its interaction with genotype is critical in trait improvement (Peterson et al 1986). Various reports have indicated significant effects of environment and GEI on PC (Rozbicki et al 2015;Saleem et al 2015), PC and TKW (Khazratkulova et al 2015), PC, TKW, and SV (Studnicki et al 2016), PC, SV, and KH (Surma et al 2012), SV (Castillo et al 2012), TKW and KH (Aucamp et al 2006). The environment is the most important factor affecting TKW and PC (Hernandez-Espinosa et al 2018).…”

Grain yield, quality traits and grain yield stability of local oat cultivars

“…Genotype × environment interactions then become significant when the genotypes were grown in several different environments (Kharatukulova et al, 2015). The genotype × environment interaction (GEI)) has an effect on selection and recommendation of genotypes for the target environments.…”

Effect of date of heading on variation of basic components of productivity of winter wheat

“…Interaction (p-value) between the genotype and the location is found in four of these six traits, which indicates relatively less impact on traits from the point as a factor. (Mursalova et al, 2015;Khazratkulova et al, 2015). These results are sufficient grounds for studying traits in terms of the objective in the study.…”