Heterosis and genetic parameters for grain quality in oat segregating populations

Authors

  • Solange Ferreira da Silveira Silveira Federal University of Pelotas; FAEM
  • Maraisa Crestani Hawerroth Agricultural Research and Rural Extension
  • Danyela de Cássia da Silva Oliveira Federal University of Pelotas; FAEM
  • Leomar Guilherme Woyann Federal University of Pelotas; FAEM
  • Helaine Claire Ferreira de Almeida Federal University of Pelotas; FAEM
  • Viviane Kopp da Luz Federal University of Pelotas; FAEM
  • Liamara Thurow Federal University of Pelotas; FAEM
  • Raíssa Martins da Silva Federal University of Pelotas; FAEM
  • Luiz Carlos Gutkoski University of Passo Fundo; /FAMV; Center for Food Research
  • Luciano Carlos da Maia Federal University of Pelotas; FAEM
  • Antonio Costa de Oliveira Federal University of Pelotas; FAEM

DOI:

https://doi.org/10.1590/0103-9016-2015-0129

Abstract

Improvement of quality-related traits of grains is a constant concern in white oat breeding programs, which challenges breeders to understand their dynamics. The performance of different genetic combinations must be thoroughly evaluated to make high nutritional quality cultivars available. This study aimed to estimate the heterosis on F1 and F2 generations, vigor loss, due to inbreeding, and correlation between the grain chemical components to understand the dynamics of these traits, considering two segregating oat progenies. The populations Albasul × UPF 15 (population 1) and IAC 7 × UFRGS 19 (population 2) were developed. Both populations showed transgressive segregant individuals. The combination Albasul × UPF 15 provided significant heterosis for traits β-glucan total and soluble fiber contents, while the population obtained by crossing IAC 7 × UFRGS 19 generated significant gain by heterosis for total fiber, insoluble fibers and non-structural carbohydrate contents. Considering the F2 average for each population, one can observe that population 1 presents higher β-glucan and lipid contents than population 2. On the other hand, population 2 has higher protein content than population 1. In both populations, the non-structural carbohydrate content is strongly and negatively correlated whith protein, total and insoluble fibers. Correlations between total fibers and lipids and between total fibers and insoluble fibers were both positive and high in both populations.

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Published

2016-10-01

How to Cite

Silveira, S. F. da S., Hawerroth, M. C., Oliveira, D. de C. da S., Woyann, L. G., Almeida, H. C. F. de, Luz, V. K. da, Thurow, L., Silva, R. M. da, Gutkoski, L. C., Maia, L. C. da, & Oliveira, A. C. de. (2016). Heterosis and genetic parameters for grain quality in oat segregating populations . Scientia Agricola, 73(5), 471-477. https://doi.org/10.1590/0103-9016-2015-0129

Issue

Section

Genetics and Plant Breeding