Associations between agronomic performance and grain chemical traits in oat

Abstract

Great progress has already been achieved in breeding white oats (Avena sativa L.). However, breeders of this species need to make available to the market higher yielding and higher grain quality cultivars. Therefore, it is necessary to optimize the strategies of selection of superior genotypes. The present work aimed to estimate the correlation between traits related to agronomic performance and traits related to chemical composition of white oat grains, seeking to add understanding for the selection of higher yielding genotypes with high nutritional quality. Thirty families from the cross between the cultivars Albasul and UPF 15 were used, and 31 families from the cross between the cultivars IAC 7 and UFRGS 19. Six traits related to agronomic performance and five traits corresponding to the chemical composition of the grains were evaluated. To assess the relationship between the different traits evaluated, simple correlation and canonical correlation analyzes were performed. The results demonstrate the existence of simple correlations between grain chemical constituents and traits related to agronomic performance. The pair-by-pair relationship between traits of these two groups was also observed, but the environmental action strongly interfered with these correlations. The canonical correlation analysis allowed the verification of dependence between the evaluated trait groups where genotypes with higher number of grains per panicle, high mass of one thousand grains, with lower stature and lower number of spikelets, will have lower lipid and total fiber content, but with higher protein contents. Highlighted Conclusions 1. There is a relationship of dependence between the agronomic performance trait group and the oat grain chemical constituent group. 2. Indirect selection of grains with higher nutritional quality and high agronomic performance will be feasible providing there is a strict control of environmental conditions. 3. Selections that seek superiority in all traits studied will not be possible, given the presence of negative correlations.

Productivity and Stability Evaluation of 12 Selected Avena magna ssp. domestica Lines Based on Multi-Location Experiments during Three Cropping Seasons in Morocco

“…The NSP varied among lines, ranging from 24.85 to 36.06 for AT2 and AT7, respectively. Solange et al [33] observed an NSP mean of 26.63 for A. sativa, which is close to our findings. However, Jan et al [6] counted 66 spikelets per panicle on average in their experiment.…”

“…Among our investigated traits, PH gave the lowest CV, between 9.97 and 21.18% across the five sites. This finding is in line with Solange et al [33] and Dumlupinar et al [32], who reported CVs of 11.16 and 8.7%, respectively, for this trait. A possible explanation for these observations is that plant height is affected by a relatively small number of major genes, which in this case might be largely fixed through selection.…”

“…Our line TKW values, similar to previous results in A. sativa, varied between 32.83 and 49.73 g for AT3 and AT5, respectively. Our results correspond well with A. sativa TKW values [6,32,33].…”

A produção sem agrotóxicos no controle de doenças foliares da aveia: indutor de resistência por silício e potássio e zona de escape

“…Na alimentação animal, a aveia é amplamente utilizada, podendo ser fornecida através do pastejo direto, na forma de silagem, feno e na composição de rações (Oliveira, et al, 2011;Hawerroth, et al, 2015 b;Marolli, et al, 2017 b;Pereira, et al, 2018). Além disso, ganha destaque na alimentação humana, na indústria de alimentos, processada ou in natura, consumida na forma de flocos, farinhas, biscoitos e combinada em diversos produtos (Arenhardt, et al, 2017;Scremin, et al, 2020;Silveira, et al, 2020). A aveia é um cereal de elevado valor nutricional devido à presença de proteínas, carboidratos, lipídios e fibra dietética (β-glucana) em seus grãos.…”

Phenotypic and genetic characterization of an Avena sativa L. germplasm collection of diverse origin: implications for food-oat breeding in Chile

“…Understanding the genetic diversity of the breeding germplasm, in combination with the phenotypic variation, correlation and heritability of important traits under selection, has facilitated the design of more effective breeding programs ( Nava et al., 2010 ; Krishna et al., 2013 ; Boczkowska et al., 2016 ; Winkler et al., 2016 ; Silveira et al., 2020 ; Cieplak et al., 2021 ). There is published research on this aspect in Sweden, Denmark, Finland, Norway ( Nersting et al., 2006 ), USA ( Winkler et al., 2016 ), India ( Chauhan and Singh, 2019 ), and Brazil ( Mazurkievicz et al., 2019 ; Meira et al., 2019 ; Zimmer et al., 2019 ; Silveira et al., 2020 ), but not under the environmental conditions of southern Chile. Few Chilean oat genotypes have been included in genetic diversity studies ( Achleitner et al., 2008 ), which do not include the newest breeding lines and those most cultivated in Chile.…”