Esterase polymorphism for genetic diversity analysis of some accessions of a native forage grass, <i>Mesosetum chaseae</i> Luces, from the Brazilian Pantanal

Authors

  • Ana Clara S. Meirelles Postgraduate Program in Agronomy, Universidade Estadual de Maringá, Maringá, PR, Brazil.
  • Eliane R. Monteiro Postgraduate Program in Genetics and Breeding, Universidade Estadual de Maringá, Maringá, PR, Brazil.
  • Laura A.C. da Silva Postgraduate Program in Genetics and Breeding, Universidade Estadual de Maringá, Maringá, PR, Brazil.
  • Débora da Silva Postgraduate Program in Genetics and Breeding, Universidade Estadual de Maringá, Maringá, PR, Brazil.
  • Sandra A. Santos Empresa Brasileira de Pesquisa Agropecuária, Embrapa Pantanal, Corumbá, MS, Brazil.
  • Sandra A. de Oliveira-Collet Empresa Brasileira de Pesquisa Agropecuária, Embrapa Pantanal, Corumbá, MS, Brazil
  • Claudete A. Mangolin Departamento de Biotecnologia, Genética e Biologia Celular, Universidade Estadual de Maringá, Maringá, PR, Brazil.
  • Maria de Fátima P.S. Machado Departamento de Biotecnologia, Genética e Biologia Celular, Universidade Estadual de Maringá, Maringá, PR, Brazil.

DOI:

https://doi.org/10.17138/tgft(3)194-204
Abstract Authors How to Cite

Abstract

The aim of the present study was to estimate the genetic diversity within the samples of Mesosetum chaseae from the Embrapa Pantanal Germplasm Bank (BAG) and assess how they are genetically structured to guide proposals to: 1) identify native forages for further testing to measure their suitability for sowing in conjunction with or as an alternative to exotic forages, mainly Urochloa humidicola; and 2) improve the species M. chaseae with samples that are maintained in the BAG. Isozyme α- and β-esterases were analyzed in 10 accessions collected from different locations in the Nhecolândia sub-region of the Pantanal, and maintained in the BAG. Accessions A11, which showed the highest effective number of alleles, and A32 with the highest average values of expected and observed heterozygosity, were identified as warranting further study as possible options for sowing as pasture forages, as well as for use in recovering poor and degraded areas in the Pantanal region. A high level of population differentiation was detected among the 10 accessions, indicating that they form genetically structured populations and that all accessions are important samples of M. chaseae, which should be maintained in the BAG. Crosses between sample plants with the highest genetic distances are recommended to implement improvement plans with a prospect of broadening the genetic base of the species.

Keywords: Genetic polymorphism, genetic resources, grama-do-cerrado, isoesterases, Poaceae.

DOI: 10.17138/TGFT(3)194-204

Author Biographies

Ana Clara S. Meirelles, Postgraduate Program in Agronomy, Universidade Estadual de Maringá, Maringá, PR, Brazil.

Postgraduate Program in Agronomy

Eliane R. Monteiro, Postgraduate Program in Genetics and Breeding, Universidade Estadual de Maringá, Maringá, PR, Brazil.

Postgraduate Program in Genetics and Breeding

Laura A.C. da Silva, Postgraduate Program in Genetics and Breeding, Universidade Estadual de Maringá, Maringá, PR, Brazil.

Postgraduate Program in Genetics and Breeding

Débora da Silva, Postgraduate Program in Genetics and Breeding, Universidade Estadual de Maringá, Maringá, PR, Brazil.

Postgraduate Program in Genetics and Breeding

Sandra A. Santos, Empresa Brasileira de Pesquisa Agropecuária, Embrapa Pantanal, Corumbá, MS, Brazil.

Empresa Brasileira de Pesquisa Agropecuária, Centro de Pesquisa Agropecuária do Pantanal

Sandra A. de Oliveira-Collet, Empresa Brasileira de Pesquisa Agropecuária, Embrapa Pantanal, Corumbá, MS, Brazil

Department of Biotechnology, Genetics and Cell Biology

Claudete A. Mangolin, Departamento de Biotecnologia, Genética e Biologia Celular, Universidade Estadual de Maringá, Maringá, PR, Brazil.

Department of Biotechnology, Genetics and Cell Biology

Maria de Fátima P.S. Machado, Departamento de Biotecnologia, Genética e Biologia Celular, Universidade Estadual de Maringá, Maringá, PR, Brazil.

Department of Biotechnology, Genetics and Cell Biology

How to Cite

Meirelles, A. C. S., Monteiro, E. R., da Silva, L. A., da Silva, D., Santos, S. A., de Oliveira-Collet, S. A., Mangolin, C. A., & Machado, M. de F. P. (2015). Esterase polymorphism for genetic diversity analysis of some accessions of a native forage grass, <i>Mesosetum chaseae</i> Luces, from the Brazilian Pantanal. Tropical Grasslands-Forrajes Tropicales, 3(3), 194–204. https://doi.org/10.17138/tgft(3)194-204

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Published

2015-09-30

Issue

Vol. 3 No. 3: September 2015

Section

Research Papers