Selection of species and provenances of Pinus sp. in the region of Assis, state of São Paulo

• Grant number: 13/02826-3
• Support Opportunities: Scholarships in Brazil - Master
• Start date: May 01, 2013
• End date: February 28, 2015
• Field of knowledge: Agronomical Sciences - Forestry Resources and Forestry Engineering - Forestry
• Principal Investigator: Alexandre Magno Sebbenn
• Grantee: Francine Beatriz de Souza
• Host Institution: Faculdade de Engenharia (FEIS). Universidade Estadual Paulista (UNESP). Campus de Ilha Solteira. Ilha Solteira , SP, Brazil

Abstract

A basic program of tree breeding can be divided into three parts: i) the selection of species, ii) the selection of provenances within the species most adapted and; selecting progenies within of more adapted provenances. Later stages may involve controlled crossings and individual genotypic selection, associated with cloning of superior genotypes. However, the first two phases are critical to success in the domestication of species and populations. In the selection of species and provenances that the biggest gains are capitalized. The error in the selection of species may represent a strong cost a forest company due to the large difference in the growth among species adaptation to different environments, especially when testing different species from different hemispherical and continents. The objectives of this study is precisely access the first two phases of a program of domestication or breeding, ie, the selection of species and provenances of Pinus from Guatemala in the region of Assis, São Paulo, Brazil. The selection will be carried out in a test of Pinus species and provenances, installed in 1991 in the Assis State Forest, state of São Paulo. More specifically we aims to: 1) Determine which of the three pine species or provenances has higher performance and better adapted for growth traits in the environmental conditions of Assis-SP, 2) determine the possibility of early selection of species and provenances of Pinus; 3) Determine how is the distribution of genetic variation for growth traits, among and within seven provenances of Pinus species and Guatemala; 4) Determine if there is phenotypic association between growth traits of three species and provenances of Pinus; 5) Determine if exist correction between phenotypic growth traits and geographical characteristics and climatic features (latitude, longitude, altitude, temperature and mean annual precipitation) of Pines species and provenances. The species and provenances test was installed using open-pollinated seed from two provenances of P. tecunumanii three provenances of P. oocarpa and two provenances of P. maximinoi. The experimental design was a randomized block with square plots of 49 plants (7 x 7), spaced 3 x 2.5 m, totaling seven treatments with four replications (blocks). In February 1993, we measured the traits total height (ALT) and survival rate and in July 2012 the trait were the diameter at breast height (DBH), total height (ALT), survival rate (SOB) , basal area per hectare (BA) and volume per hectare (VOL). As being tested three different Pinus species, we expected that these have different performance for growth traits. The results of this study may contribute to forestations in the region of Assis, the indication of the provenance of more adapted specie to the region and serve as a base population for a tree breeding program for the species. (AU)

Academic Publications

(References retrieved automatically from State of São Paulo Research Institutions)

SOUZA, Francine Beatriz de. Seleção de espécies e procedências de Pinus sp para a região de Assis, Estado de São Paulo. 2015. Master's Dissertation - Universidade Estadual Paulista (Unesp). Faculdade de Engenharia. Ilha Solteira Ilha Solteira.