Strategies for Multi-trait Selection of Sweet Sorghum Progenies

Abstract

The selection of sweet sorghum genotypes is based on multiple agronomical and technological traits. The objectives of this study were to evaluate the effectiveness of inter-trait recovery information in improving the selective accuracy of the predicted genetic values of sweet sorghum progenies, and to compare several selection indices in terms of selection gains using single-and multi-trait mixed models. The trials were conducted in two sites. The traits flowering time, plant height, green mass production, total soluble solids content, and tons of Brix per hectare were assessed. Significant genetic variance was observed for all traits, except for total soluble solids content. The multi-trait analysis provided more accurate estimates of genetic parameters and predictions of the progeny genetic values, and higher selection gain than the singletrait analysis. The direct selection for TBH and the FAI/BLUP index resulted in balanced genetic gains for the assessed traits.

Evaluation of genetic parameters of winter barley varieties under water deficit conditions

“…The FAI-BLUP index has the potential to improve multiple traits simultaneously since it considers predicted genetic effects (Rocha et al, 2018). The FAI-BLUP index was used for multiple-trait selection in some cereals crops such as sorghum (de Silva et al, 2018;Oliveira et al, 2019;Botelho et al, 2022), wheat (Meier et al, 2021;Casagrande et al, 2022) and maize (Peixoto et al, 2021). To our knowledge, there is no information about the application of this index in barley breeding.…”

Crescimento De Sorgo Sacarino Sob Adubações De Cobertura Com Vinhaça Biodigerida Combinada Ou Não Com Adubos Minerais

“…O Brasil é o segundo maior produtor de etanol do mundo utilizando a cana -de-açúcar como matéria-prima (KARP et al, 2021). No entanto, para fortalecer a cadeia produtiva do etanol, principalmente no que diz respeito ao preenchimento da lacuna na entressafra da cana-de-açúcar, as usinas têm utilizado outras culturas bioenergéticas, o que maximiza o uso de recursos e contribui para que se tenha processos agrícolas e industriais mais eficientes (BOTELHO et al, 2021).…”