Performance and genetic variation in a provenance test of Araucaria cunninghamii

Authors

  • Wanderley dos Santos Universidade Estadual Paulista Júlio de Mesquita Filho, Faculdade de Engenharia de Ilha Solteira, Avenida Brasil, no 56, Centro, CEP 15385-000 Ilha Solteira, SP.
  • Ananda Virginia de Aguiar Embrapa Florestas, Estrada da Ribeira, Km 111, Parque Monte Castelo, CEP 83411-000 Colombo, PR.
  • Bruno Marchetti de Souza Universidade Estadual Paulista Júlio de Mesquita Filho, Faculdade de Engenharia de Ilha Solteira, Avenida Brasil, no 56, Centro, CEP 15385-000 Ilha Solteira, SP.
  • Daniela Araujo Universidade Estadual Paulista Júlio de Mesquita Filho, Faculdade de Engenharia de Ilha Solteira, Avenida Brasil, no 56, Centro, CEP 15385-000 Ilha Solteira, SP.
  • Celso Machado Universidade Estadual Paulista Júlio de Mesquita Filho, Faculdade de Engenharia de Ilha Solteira, Avenida Brasil, no 56, Centro, CEP 15385-000 Ilha Solteira, SP.
  • Mário Luiz Texeira de Moraes Universidade Estadual Paulista Júlio de Mesquita Filho, Faculdade de Engenharia de Ilha Solteira, Avenida Brasil, no 56, Centro, CEP 15385-000 Ilha Solteira, SP.
  • Alexandre Magno Sebbenn Instituto Florestal de São Paulo, Rua do Horto, no 931, CEP 02377-000 São Paulo, SP.
  • Miguel Luiz Menezes Freitas Instituto Florestal de São Paulo, Rua do Horto, no 931, CEP 02377-000 São Paulo, SP.

DOI:

https://doi.org/10.1590/S1678-3921.pab2021.v56.26964

Keywords:

conifer, genetic parameters, tree breeding

Abstract

The objective of this work was to assess the genetic variability of Araucaria cunninghamii in a provenance test and to estimate the genetic gains in its wood production, based on different selection intensities. The trial was established in Luís Antônio, in the state of São Paulo, Brazil, using open-pollinated seed from Queensland, Australia. The experimental design used was a randomized complete block with six replicates, and four plants per plot. Diameter at breast height (DBH), stem form, and survival were measured at 29 years after planting. Significant differences were detected among provenances. The coefficient of genotypic variation between provenances was high (60%) for DBH and stem form. The mean values for DBH and stem form were 23.21 cm and 4.50, respectively. The provenances Langkelly Creek, Brooweena L.A., Yarraman, and St. Agnes showed the best performance for DBH, and Imbil Seed Orchard, Brooweena L.A, St. Agnes, St. John, and Yarraman, for stem form. Genetic gains ranged from 0.5 to 24.8% for DBH, and from 0.9 to 3.5% for stem form.

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Published

2021-10-20

How to Cite

Santos, W. dos, Aguiar, A. V. de, Souza, B. M. de, Araujo, D., Machado, C., Moraes, M. L. T. de, … Freitas, M. L. M. (2021). Performance and genetic variation in a provenance test of <i>Araucaria cunninghamii</i>. Pesquisa Agropecuaria Brasileira, 56(Y), e02170. https://doi.org/10.1590/S1678-3921.pab2021.v56.26964

Issue

V.56, Jan./Dec., 2021 :Continuos publication

Section

GENETICS