Data/hora: 06/06/2024 01:42:05

Biblioteca(s): 	Embrapa Cerrados.	
Data corrente: 	20/04/1999	
Data da última atualização: 	20/04/1999	
Autoria: 	MOURA, V. P. G.; DVORAK, W. S.	
Título: 	Provenance and family performance of Pinus tecunumanii at 12 years of age in the cerrado region of Brazil.	
Ano de publicação: 	1998	
Fonte/Imprenta: 	Forest Genetics, Liptovsky Mikulas, Slovakia, v.5, n.31, p.137-145, 1998.	
Idioma: 	Inglês	
Conteúdo: 	Thirteen provenances and 73 open-pollinated families of Pinus tecunumanii Eguiluz and J.P. Perry from the highland areas in southern Mexico, Guatemala and Honduras, were established in two field trials near Brasilia in the cerrado region of Brazil. The trials were assessed at 12 years of age for productivity and quality traits. The three best provenances of P. tecunumanii for individual tree volume were San Jeronimo (0.22m3), La Soledad (0.20m3) and Montebello (0.20m3) and were superior to the local commercial control of P. oocarpa Schiede ex Schlecht. (0.17m3). The Central American provenances overall were more productive than the Mexican sources and had a lower incidence of forks (11% vs. 18%) and broken-tops (2% vs. 4%). Phenotypic correlations between height growth and forking percent and height growth and broken tops were unfavorable and significant. Individual tree heritability for volume was greater in the Central American provenances (0.43+-0.12) than in the Mexican sources (0.22+-0.08). The good survival and growth of P. tecunumanii combined with some of the lowest recorded rates of stem breakage in the tropics suggests that the species has grat commercial value in the cerrado of Brazil. 	
Palavras-Chave: 	Brasil.	
Thesagro: 	Cerrado; Genética Vegetal; Procedência.	
Thesaurus Nal: 	genetics; Pinus tecunumanii; provenance.	
Categoria do assunto: 	--	
Registro original: 	Embrapa Cerrados (CPAC)	
Exemplares: 	CPAC - (11715-1) - UPC - SP - -- - CRI4916 -  - CRI4916 - DIS