Identification of stable quantitative trait loci for grain yield in rice

Authors

  • Daniany Rodrigues Adorno Silva Universidade Federal de Goiás, Escola de Agronomia, Rodovia GO-462, Km 0, CEP 74690-900 Goiânia, GO.
  • João Antônio Mendonça Embrapa Arroz e Feijão, Rodovia GO-462, Km 12, Zona Rural, Caixa Postal 179, CEP 75375-000 Santo Antônio de Goiás, GO.
  • Antônio Carlos Centeno Cordeiro Embrapa Roraima, Rodovia BR-174, Km 8, CEP 69301-970 Boa Vista, RR.
  • Ariano Martins de Magalhães Júnior Embrapa Clima Temperado, Rodovia BR-392, Km 78, CEP 96090-575 Pelotas, RS.
  • Rosana Pereira Vianello Embrapa Arroz e Feijão, Rodovia GO-462, Km 12, Zona Rural, Caixa Postal 179, CEP 75375-000 Santo Antônio de Goiás, GO.
  • Claudio Brondani Embrapa Arroz e Feijão, Rodovia GO-462, Km 12, Zona Rural, Caixa Postal 179, CEP 75375-000 Santo Antônio de Goiás, GO.

Keywords:

Oryza sativa, DArTseq, genotyping by sequencing, heritability, molecular markers.

Abstract

The objective of this work was to identify the quantitative trait loci (QTLs) associated with grain yield in a rice segregant population (GYP). A population of 245 inbred recombinant rice lines from the 'Epagri 108' (Oryza sativa subsp. indica) x 'IRAT 122' (O. sativa subsp. japonica) cross was evaluated at different locations and years and genotyped by single nucletide polymorphism (SNP) markers. A map of 1,592.8 cM was obtained from 9,831 SNPs, identifying 25 QTLs. The following nine SNPs showed stability between the different environments: M1.37719614 and M6.9563117 for GYP; M4.29340056, M5.25588710, M7.29115624, and M12.4534450 for 100-grain weight (HGW); and M1.38398157, M4.28368337, and M7.25991230 for plant height (PH). Six SNPs were not present in the linkage blocks: M6.9563117 and M4.1077080 for GYP; M5.25588710 and M6.8886398 for HGW; and M2.34471005 and M8.5955948 for PH. The M6.9563117 and M5.25588710 SNPs were considered environmentally stable and were not present in the linkage blocks, showing their high potential for use in marker-assisted selection for grain yield in Brazilian rice breeding programs.

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Published

2022-09-14

How to Cite

Silva, D. R. A., Mendonça, J. A., Cordeiro, A. C. C., Júnior, A. M. de M., Vianello, R. P., & Brondani, C. (2022). Identification of stable quantitative trait loci for grain yield in rice. Pesquisa Agropecuaria Brasileira, 57(Z), e02812. Retrieved from https://apct.sede.embrapa.br/pab/article/view/27120

Issue

V.57, Jan./Dec., 2022 :Continuos publication

Section

GENETICS