Avaliação e seleção de famílias de aveia branca (Avena sativa L.) de diferentes cruzamentos

Abstract

The white oat (Avena sativa L.) has multiple possibilities of use. Its consumption in human food has been growing gradually due to its nutritional characteristics, which promotes health benefits, resulting in advances in its cultivation, assuming a fundamental role in the Brazilian agricultural scenario. Oat has become a product of interest also for the food industry, promoting an increase in demand for cereal and a search for continuous improvement in the industrial quality of the product. Thus, one of the challenges of oat breeding is to bring together in the same genotype high grain yield combined with satisfactory industrial quality. Given the above, the objective of the work was to evaluate five segregating populations from artificial crossings between parents: Faem 4 Carlasul x Brisasul, URS 21 x Brisasul, IPR Afrodite x Brisasul, UPFA Ouro x Brisasul, URS Corona x Brisasul and identify the best populations. Also, to find the highest performing families within each segregating population, conducive to composing oat breeding programs, aimed at improving traits related to grain yield, industrial quality, lodging and disease resistance. According to the results found, there are high potential families for the characters evaluated in all crossings, being ideal for future selections and subsequent participation in preliminary trials. The selection gain allows verifying that the families in the F6 generation have greater homogeneity for most of the evaluated characters, however there is still a possibility of genetic gain for the families, except for the crossing between URS Corona x Brisasul.