Genetic variability of the initial growth of Eugenia dysenterica DC.: implications for conservation and breeding

Authors

  • Carolina Ribeiro Diniz Boaventura-Novaes Universidade Federal de Lavras, Instituto de Ciências Naturais, Departamento de Biologia, Setor de Genética e Melhoramento de Plantas, Lavras, MG, Brasil. https://orcid.org/0000-0003-3674-4813
  • Evandro Novaes Universidade Federal de Lavras, Instituto de Ciências Naturais, Departamento de Biologia, Setor de Genética e Melhoramento de Plantas, Lavras, MG, Brasil. https://orcid.org/0000-0003-3803-0339
  • Elias Emanuel Silva Mota Faculdade Evangélica de Goianésia, Goianésia, GO, Brasil. https://orcid.org/0000-0002-4952-5620
  • Mariana Pires de Campos Telles Pontifícia Universidade Católica de Goiás, Escola de Ciências Médicas e da Vida, Goiânia, GO, Brasil. https://orcid.org/0000-0002-9023-0007
  • Lázaro José Chaves Universidade Federal de Goiás, Escola de Agronomia, Setor de Melhoramento de Plantas, Goiânia, GO, Brasil. https://orcid.org/0000-0002-4678-9014

Abstract

Eugenia dysenterica DC. is a native tree from the Brazilian Savanna known as a genetic resource for its fruits and culinary potential. The knowledge on the genetic variability of agronomic traits is important to support studies on its conservation and domestication. This study aimed to estimate the quantitative genetic parameters of initial growth traits among and within E. dysenterica subpopulations, in provenance and progeny testing, and establish a germplasm collection representative of the species distribution. For that, 25 natural subpopulations were sampled and, within each subpopulation, six mother trees. The progenies were sown in a nursery, in a randomized complete blocks design consisting of 150 progenies, four replications and five plants per plot. The analysis of variance of the initial development traits revealed a greater variability among the progenies within the subpopulation than that observed among the subpopulations. The aboveground biomass represented only 15 % of the total biomass, a recurrent characteristic in Brazilian Savanna species. The estimated heritability and coefficients of genetic variation presented selection potential for the initial development traits, which are important for commercial seedlings production. An in vivo ex situ germplasm collection was established for conservation and breeding purposes, using a sample of four plants from each progeny.

KEYWORDS: Cagaita, progeny test, Brazilian Savanna, genetic resources.

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Published

2021-09-21

Issue

Vol. 51 (2021)

Section

Special Supplement: Cerrado [Brazilian Savanna]

License

Authors will not be paid for published articles and must waive their copyright in favor of the PAT journal. On the other hand, they are solely responsible for the content of those articles, even if the Editor holds the right to adjust them to the norms of the journal. Authors are allowed to publish their articles simultaneously in their institutional repositories, as soon as the original publication at the PAT journal is mentioned.

How to Cite

BOAVENTURA-NOVAES, C. R. D. et al. Genetic variability of the initial growth of Eugenia dysenterica DC.: implications for conservation and breeding. Pesquisa Agropecuária Tropical [Agricultural Research in the Tropics], v. 51, p. e68756, 21 Sep.2021.