Early selection and classification of yerba mate progenies

Authors

  • Ivar Wendling Embrapa Florestas, Estrada da Ribeira, Km 111, Caixa Postal 319, CEP 83411-000 Colombo, PR.
  • José Alfredo Sturion Embrapa Florestas, Estrada da Ribeira, Km 111, Caixa Postal 319, CEP 83411-000 Colombo, PR.
  • Carlos André Stuepp Universidade Estadual de Ponta Grossa, Departamento de Fitotecnia e Fitossanidade, Campus de Uvaranas, Bloco F, Sala 08, Avenida Carlos Cavalcanti, no 4.748, CEP 84030-900 Ponta Grossa, PR.
  • Cristiane Aparecida Fioravante Reis Embrapa Florestas, Estrada da Ribeira, Km 111, Caixa Postal 319, CEP 83411-000 Colombo, PR.
  • Magno Antonio Patto Ramalho Universidade Federal de Lavras, Departamento de Biologia, Caixa Postal 3.037, Campus Universitário, CEP 37200-000 Lavras, MG.
  • Marcos Deon Vilela de Resende Embrapa Florestas, Estrada da Ribeira, Km 111, Caixa Postal 319, CEP 83411-000 Colombo, PR.

DOI:

https://doi.org/10.1590/S1678-3921.pab2018.v53.25288

Keywords:

Ilex paraguariensis, cloning, genetic correlation, progeny x harvesting-age interaction

Abstract

The objective of this work was to evaluate the feasibility of early selection of open-pollinated yerba mate (Ilex paraguariensis) progenies, and to classify the best parents and candidates for clones. The germplasm is composed of 140 progenies collected from areas within the natural distribution of the species in Southern Brazil and a commercial genotype (control). The experiment was established in Ivaí, in the state of Paraná, Brazil, in March 1997, in randomized complete blocks, with ten replicates, and linear plots of six plants. The commercial mass (kg per plant) of leaves and branches smaller than 7 mm was harvested at 2.5, 4.5, 6.5, and 18.7 years of age. The statistical evaluation was performed using the mixed model procedure with restricted maximum likelihood/best linear unbiased prediction, using the Selegen software. High selective accuracy, significant progeny effects, and genetic variability for commercial mass production were observed for the four harvesting ages. The application of early selection for leaf mass production is feasible for yerba mate progenies harvested at 6.5 years. The selection of the best trees, either for use as parents or as candidates for cloning, provides significant gains for the genetic breeding of yerba mate.

 

Author Biographies

José Alfredo Sturion, Embrapa Florestas, Estrada da Ribeira, Km 111, Caixa Postal 319, CEP 83411-000 Colombo, PR.

http://lattes.cnpq.br/7186546439713749

Carlos André Stuepp, Universidade Estadual de Ponta Grossa, Departamento de Fitotecnia e Fitossanidade, Campus de Uvaranas, Bloco F, Sala 08, Avenida Carlos Cavalcanti, no 4.748, CEP 84030-900 Ponta Grossa, PR.

http://lattes.cnpq.br/5848299677423459

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Published

2018-05-08

How to Cite

Wendling, I., Sturion, J. A., Stuepp, C. A., Fioravante Reis, C. A., Ramalho, M. A. P., & Resende, M. D. V. de. (2018). Early selection and classification of yerba mate progenies. Pesquisa Agropecuaria Brasileira, 53(3), 279–286. https://doi.org/10.1590/S1678-3921.pab2018.v53.25288

Issue

Section

GENETICS