Genetic characterization of a progeny test of Dipteryx alata Vog., from a forest fragment of Estação Ecológica Paulo de Faria, São Paulo State, Brazil

Author(s)

Daniela Silvia de Oliveira Canuto ^[1] ; Darlin Ulises Gonzalez Zaruma ^[2] ; Marcela Aparecida de Moraes ^[3] ; Alexandre Marques da Silva ^[4] ; Mario Luiz Teixeira de Moraes ^[5] ; Miguel Luiz Menezes Freitas ^[6]

Affiliation

^[1] Universidade Estadual Paulista. Faculdade de Engenharia de Ilha Solteira - Brasil

^[2] Universidade Estadual Paulista. Faculdade de Ciências Agronômicas - Brasil

^[3] Universidade Estadual Paulista. Faculdade de Engenharia de Ilha Solteira - Brasil

^[4] Universidade Estadual Paulista. Faculdade de Engenharia de Ilha Solteira - Brasil

^[5] Universidade Estadual Paulista. Faculdade de Engenharia de Ilha Solteira - Brasil

^[6] Instituto Florestal - Brasil

• Document type: Journal article
• Source: Hoehnea; v. 42, n. 4, p. 641-648, 2015-12-00.

Abstract

ABSTRACT Currently, the natural vegetation of the Cerrado is highly fragmented, causing the loss of genetic variability and concomitant risk of extinction of the remaining populations in these fragments. Not indifferent to this, the aim of this study was to estimate the genetic variability of a progeny test of Dipteryx alata, formed from the material of Estação Ecológica Paulo de Faria, to effect the genetic conservation of what remains of the species in the State of São Paulo and subsidize a selection method aimed the formation of a seed orchard with genetic quality to be used in the Cerrado restoration. The progeny test, with 59 progenies, 17 replications and a plant per plot, was installed on July 10, 2013, in the Fazenda de Pesquisa, Ensino e Extensão (FEPE) of Universidade Estadual Paulista, Ilha Solteira, SP, Brazil. The genetic parameter estimates were based on total plant height of 3, 7, and 21 months of age. Estimates of average heritability, individual genetic variation coefficient, accuracy (0.81, 39.88, and 0.90, respectively, at three months), and genetic correlations between ALT and DMC (0.74) indicated that the formation of the test progenies allowed to rescue the genetic material with enough genetic variability to ensure the formation of new populations and estimates of genetic parameters showed promising genetic basis, which allows gains in selection in breeding programs and seed orchard formation for use in restoration programs. (AU)

• FAPESP's process: 12/18747-2 - Conservation and improvement in progenies / precedence test of Dipteryx alata Vogel in two differents field conditions
• Grantee: Mario Luiz Teixeira de Moraes
• Support type: Regular Research Grants