Simultaneous selection for yield, adaptability, and genotypic stability in immature cowpea using REML/BLUP

Authors

  • Teresinha de Jesus Feitosa de Sousa Universidade Federal do Piauí, Centro de Ciências Agrárias, Pós-Graduação em Genética e Melhoramento, Campus Universitário Ministro Petrônio Portella, Ininga, CEP 64049-550 Teresina, PI.
  • Maurisrael de Moura Rocha Embrapa Meio-Norte, Avenida Duque de Caxias, no 5.650, Buenos Aires, Caixa Postal 001, CEP 64008-780 Teresina, PI.
  • Kaesel Jackson Damasceno-Silva Embrapa Meio-Norte, Avenida Duque de Caxias, no 5.650, Buenos Aires, Caixa Postal 001, CEP 64008-780 Teresina, PI.
  • Cândida Hermínia Campos de Magalhães Bertini Universidade Federal do Ceará, Departamento de Fitotecnia, Campus do Pici, Avenida Mister Hull, no 2.977, Bloco 805, CEP 60356-000 Fortaleza, CE.
  • Lindomar Maria da Silveira Universidade Federal Rural do Semi-Árido, Departamento de Ciências Agronômicas e Florestais, Avenida Francisco Mota, no 572, Presidente Costa e Silva, CEP 59625-900 Mossoró, RN.
  • Raylson Rodrigues de Sousa Universidade Federal do Piauí, Centro de Ciências Agrárias, Pós-Graduação em Genética e Melhoramento, Campus Universitário Ministro Petrônio Portella, Ininga, CEP 64049-550 Teresina, PI.
  • Jaqueline Luz Moura Sousa Universidade Federal do Piauí, Centro de Ciências Agrárias, Pós-Graduação em Genética e Melhoramento, Campus Universitário Ministro Petrônio Portella, Ininga, CEP 64049-550 Teresina, PI.

DOI:

https://doi.org/10.1590/S1678-3921.pab2019.v54.26622

Keywords:

Vigna unguiculata, genotype x environment interaction, immature cowpea

Abstract

The objective of this work was to select cowpea genotypes simultaneously for high yield of immature grains, adaptability, and genotypic stability, taking into account genotype x environment interactions. The mixed models restricted maximum likelihood (REML)/best linear unbiased prediction (BLUP) were used. Sixteen cowpea genotypes were evaluated in nine environments, consisting of a combination of location (Pentecoste in the state of Ceará, Acaraú in Ceará, Teresina in Piauí, and Mossoró in Rio Grande do Norte, Brazil) and year (2012, 2013, 2014, 2015, and 2017). In all trials, a randomized complete block design with four replicates was used. Significant differences were observed for effects of genotypes and the genotype x environment interaction. Environmental variance was the largest component of phenotypic variance, followed by the genotype x environment interaction and genotypic variances. The immature grain yield of the evaluated cowpea genotypes interacts strongly with the studied environments, resulting in a low genotypic correlation between environments. The MNC00-595F-27, MNC05-847B-123, and BRS Tumucumaque cowpea genotypes present high yield of immature grains, adaptability, and genotypic stability, being the most suitable for cultivation in the states of Ceará, Piauí, and Rio Grande do Norte or in other environments with similar soil and climatic conditions.

Downloads

Published

2019-11-20

How to Cite

Sousa, T. de J. F. de, Rocha, M. de M., Damasceno-Silva, K. J., Bertini, C. H. C. de M., Silveira, L. M. da, Sousa, R. R. de, & Sousa, J. L. M. (2019). Simultaneous selection for yield, adaptability, and genotypic stability in immature cowpea using REML/BLUP. Pesquisa Agropecuaria Brasileira, 54(X), e01234. https://doi.org/10.1590/S1678-3921.pab2019.v54.26622