Correlation between yield components in F6 soybean progenies derived from seven biparental crosses

Authors

  • Larissa Barbosa de Sousa Universidade Federal de Uberlândia
  • Célio Dias Santos Júnior Universidade Federal de São Carlos
  • Fernanda Neves Romanato Universidade Federal de Uberlândia
  • Osvaldo Toshiyuki Hamawaki Universidade Federal de Uberlândia
  • Ana Paula Oliveira Nogueira Universidade Federal de Uberlândia
  • Fernanda de Melo Mundim Universidade Federal de Uberlândia
  • Raphael Lemes Hamawaki Doutorando
  • Cristiane Divina Lemes Hamawaki Universidade Federal de Uberlândia

DOI:

https://doi.org/10.14393/BJ-v31n6a2015-26217

Keywords:

soja, melhoramento genético, fitotecnia, agronomia

Abstract

Breeding programs strive to obtain cultivars with superior traits. The association between these characters, such as those estimated by correlation coeficients, are important to the breeding selection process. In this study we analyzed phenotypic and genotypic correlations between yield and other agronomic traits in soybean progenies derived from various crosses to support breeding line selection in the the soybean breading program of the Federal University of Uberlandia (UFU). The experiment was carried out in the 2011/2012 growing season at the Capim Branco research station in Uberlandia, Minas Gerais, Brazil. Seventy-one soybean lines were evaluated using a randomized complete block design with three replications. In these plots plants were evaluated for the number of pods, grain yield per plant, number of days for flowering, plant height at flowering, number of days for maturity, plant height at maturity, height of the first pod insertion, number of grains per pod and grain yield per plant. The estimates for genotypic correlations were equal or greater than those for the phenotypic correlations for all the evaluated traits. This suggests a small effect of environmental factors on the trait expression. An exception of this behavior was the correlation between plant height at flowering and plant height at maturity. In this case, although the signs for the genotypic and phenotypic correlations were the same, the value for the last was greater than that for the former.. The late flowering and late-maturing plants were taller. Also, selecting plants for higher number of pods ultimately contributed for the selection of plants with higher grain yield. The selection of late-flowering and late-maturing plants have yielded taller plantsin the same way that the selection for a higher pod number could promote the selection and improvement of grains yield trait.

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Published

2015-11-17

How to Cite

DE SOUSA, L.B., SANTOS JÚNIOR, C.D., ROMANATO, F.N., HAMAWAKI, O.T., NOGUEIRA, A.P.O., MUNDIM, F. de M., HAMAWAKI, R.L. and LEMES HAMAWAKI, C.D., 2015. Correlation between yield components in F6 soybean progenies derived from seven biparental crosses . Bioscience Journal [online], vol. 31, no. 6, pp. 1692–1699. [Accessed10 December 2022]. DOI 10.14393/BJ-v31n6a2015-26217. Available from: https://seer.ufu.br/index.php/biosciencejournal/article/view/26217.

Issue

Section

Agricultural Sciences