Relationships between agronomic traits and characterization of the white oat ideotype for cultivation with and without chemical fertilization

Authors

  • Murilo Vieira Loro Universidade Federal de Santa Maria – UFSM, Santa Maria/RS – Brasil
  • Ivan Ricardo Carvalho Universidade Regional do Noroeste do Estado do Rio Grande do Sul - Unijuí, Ijuí/RS - Brasil
  • Genesio Luiz Meggiolaro Junior Universidade de Passo Fundo - UPF, Passo Fundo/RS - Brasil
  • Leonardo Cesar Pradebon Universidade Federal de Santa Maria - UFSM, Santa Maria/RS - Brasil
  • Jaqueline Piesanti Sangiovo Universidade Regional do Noroeste do Estado do Rio Grande do Sul - Unijuí, Ijuí/RS - Brasil
  • João Pedro Dalla Roza Universidade Regional do Noroeste do Estado do Rio Grande do Sul - Unijuí, Ijuí/RS - Brasil
  • Willyan Júnior Adorian Bandeira Universidade Regional do Noroeste do Estado do Rio Grande do Sul - Unijuí, Ijuí/RS - Brasil

DOI:

https://doi.org/10.15536/thema.V23.2024.532-544.3621

Keywords:

Avena sativa, correlation, path analysis, regression tree, Kohonen map

Abstract

This paper aimed to characterize and verify whether the linear relationships between agronomic traits of white oat are different between crops with and without chemical fertilization; and identify the agronomic ideotype that enhances the agronomic performance of white oats. Two uniformity tests were carried out with and without chemical fertilization in the 2020 harvest. In each trial, on 285 plants, agronomic traits were measured. Pearson's linear correlation coefficients and the direct and indirect effects of the trial analysis were calculated. The regression tree algorithm and Kohonen map neural network were used to identify the agronomic ideotype. The linear relationships between agronomic characters of white oat are similar between crops with and without chemical fertilization. White oat genotypes with greater panicle grain weight can be selected indirectly by panicle weight, regardless of cultivation with or without fertilization. White oat genotypes measuring 114.57 cm in height, 97.41 cm in panicle insertion, 18.11 cm in panicle length, 1.31 g in panicle weight and 27.92 grains in the panicle characterize the agronomic ideotype that maximizes panicle grain weight.

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Author Biographies

Murilo Vieira Loro, Universidade Federal de Santa Maria – UFSM, Santa Maria/RS – Brasil

Ivan Ricardo Carvalho, Universidade Regional do Noroeste do Estado do Rio Grande do Sul - Unijuí, Ijuí/RS - Brasil

Genesio Luiz Meggiolaro Junior, Universidade de Passo Fundo - UPF, Passo Fundo/RS - Brasil

Leonardo Cesar Pradebon, Universidade Federal de Santa Maria - UFSM, Santa Maria/RS - Brasil

Jaqueline Piesanti Sangiovo, Universidade Regional do Noroeste do Estado do Rio Grande do Sul - Unijuí, Ijuí/RS - Brasil

João Pedro Dalla Roza, Universidade Regional do Noroeste do Estado do Rio Grande do Sul - Unijuí, Ijuí/RS - Brasil

Willyan Júnior Adorian Bandeira, Universidade Regional do Noroeste do Estado do Rio Grande do Sul - Unijuí, Ijuí/RS - Brasil

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Published

2024-08-01

How to Cite

LORO, M. V. .; CARVALHO, I. R.; MEGGIOLARO JUNIOR, G. L.; PRADEBON, L. C. .; SANGIOVO, J. P. .; ROZA, J. P. D.; BANDEIRA, W. J. A. Relationships between agronomic traits and characterization of the white oat ideotype for cultivation with and without chemical fertilization. Revista Thema, Pelotas, v. 23, n. 2, p. 532–544, 2024. DOI: 10.15536/thema.V23.2024.532-544.3621. Disponível em: https://periodicos.ifsul.edu.br/index.php/thema/article/view/3621. Acesso em: 4 dec. 2024.

Issue

Section

Ciências Agrárias

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