Environmental effect on genetic gains and its impact on bread-making quality traits in Brazilian spring wheat

Abstract

In wheat (Triticum aestivum L.) several studies have reported genetic gain for grain yield over the years. However, studies on wheat bread-making quality are scarce. Our objective was to estimate the progress due to genetic and environmental components in wheat breadmaking quality parameters. In addition, we aimed to examine trends in historical cultivars and associate traits performance with geographical parameters. We used data from multi-environment trials (MET) represented by eight years (2005)(2006)(2007)(2008)(2009)(2010)(2011)(2012) and 458 genotypes, including lines and commercial cultivars (controls). We determined the genetic progress by the contrasts between genotypes assessed in each biennium, excluding the year effect. This effect is previously estimated by existing variation among common genotypes. Genotype replacement rate was 52% and reflects the dynamism of the breeding program to develop better genotypes in terms of bread-making quality. The genetic progress estimated for gluten strength (W) was 1.30% yr -1 . The progress in W demonstrated to be partly counterbalanced by the environmental effect (-0.78% yr -1 ). We observed disequilibrium tendency in relationship between tenacity and extensibility (P/L ratio) as a consequence of searching for lines with high W. Analysis showed that P/L ratio can be reduced in responses to the increase in latitude of the location. Environmental and genetic effects on the traits variation were discussed.

Prolonged heat and drought versus cool climate on the Swedish spring wheat breeding lines: Impact on the gluten protein quality and grain microstructure

“…Therefore, to better manage food security in the near future, a critical question that remains to be answered is how to maintain the quality stability of bread wheat in a changing and fluctuating climate. Breeding for stable quality wheat and selection of climate stable, good‐quality genotypes for a wide range of environments, including heat and drought, is one of the key strategies to tackle climate variation and ensure food security (Bornhofen et al, 2017; FAO, 2009; Kiszonas & Morris, 2018; Lenaerts et al, 2019; Tremmel‐Bede et al, 2020). This is of high relevance for Sweden in its aim to increase self‐sufficiency in wheat production in the nearest future.…”

Correlation between grain quality of foxtail millet ( Setaria italica [L.] P. Beauv.) and environmental factors on multivariate statistical analysis

“…Zhao et al (2002) found growth period, precipitation, and altitude were strongly associated with foxtail millet amylase content. Although some papers have reported the effects of environmental factors on crop quality in wheat (Bornhofen et al, 2017), maize (Farrell and Gilliland, 2011;Lu et al, 2016), rice (Donoso-Ñanculao et al, 2016;Chen et al, 2017), pearl millet (Ullah et al, 2017) and oats (Marketta, 2008), little work has focused on the impact of environment on foxtail millet. Moreover, existing studies have focused on the relationship between individual quality indicators of foxtail millet and individual environmental conditions in single ecological regions of limited spatial scope.…”

Environment- and Genotype-Dependent Stability in the Common Wheat Grain Quality (Triticum aestivum L.)

“…In several countries, grain quality is more important than yield because climatic conditions do not allow the realization of high productive potential (Bhatta et al, 2016;Bornhofen et al, 2017;De Santis et al, 2017). Where there are real opportunities for a successful compromise combination between yield and grain quality, breeding has a long-standing successful practice (Atanasova et al, 2012;Nehe et al, 2019;Ilin et al, 2022).…”

“…Although grain yield is always paramount, quality has been systematically and thoroughly investigated (De Santis et al, 2017, Liu et al, 2022. The influence of environments on quality has been studied through a number of its different team-related indexes (Bornhofen et al, 2017;Penchev et al, 2019;Öztürk, 2022). The strength of the effects of the conditions (E), of the genotype (G) and the interaction between them (GE) for each index have different shares (Alemu and Gerenfes, 2021;Kyratzis et al, 2022.…”