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Ciência Florestal
Centro de Pesquisas Florestais - CEPEF, Departamento de Ciências Florestais - DCFL, Programa de Pós Graduação em Engenharia Florestal - PPGEF
ISSN: 0103-9954
EISSN: 0103-9954
Vol. 22, No. 2, 2012, pp. 275-281 		Bioline Code: cf12025
Full paper language: English
Document type: Research Article
Document available free of charge

Ciência Florestal, Vol. 22, No. 2, 2012, pp. 275-281

 en EARLY SELECTION OF Pinus radiata check for this species in other resources PROGENIES TO Sphaeropsis sapinea check for this species in other resources
Corrêa, Paula Rachel Rabelo; Auer, Celso Garcia; dos Santos, Alvaro Figueredo & Higa, Antonio Rioyei

Abstract

Sphaeropsis sapinea check for this species in other resources is an important pathogen for some Pinus radiata check for this species in other resources causing tip blight and death of trees, in commercial plantings. This study was developed to select Pinus radiata progenies resistant to the pathogen, for new plantings in Brazil. Seedlings tips of 16 Pinus radiata progenies were inoculated with three pathogen monosporic isolates of Sphaeropsis sapinea, under greenhouse conditions. Lesions length and tip blight degree were evaluated. Responses of progenies to the pathogen varied according to tested isolate. The results indicated that early selection methodology was adequate to select Pinus radiata progenies resistant against Sphaeropsis sapinea. Average heritability of the progenies varied according to tested isolate and the selection criterion used.

Keywords
pine; resistance; selection

 
 pt SELEÇÃO PRECOCE DE PROGÊNIES DE Pinus radiata check for this species in other resources A Sphaeropsis sapinea check for this species in other resources
Corrêa, Paula Rachel Rabelo; Auer, Celso Garcia; dos Santos, Alvaro Figueredo & Higa, Antonio Rioyei

Resumo

Sphaeropsis sapinea check for this species in other resources é um importante patógeno para Pinus radiata check for this species in other resources , causando seca de ponteiros e morte de árvores, em plantios comerciais. Este estudo teve como objetivo selecionar progênies de Pinus radiata resistentes ao patógeno. Mudas de 16 progênies de Pinus radiata foram inoculadas com três isolados monospóricos do patógeno, em condição de casa de vegetação. Foram avaliados o comprimento das lesões e o grau de secamento dos ponteiros. Os resultados indicaram que a metodologia de seleção precoce foi adequada para selecionar progênies de Pinus radiata resistentes ao Sphaeropsis sapinea. A herdabilidade média das progênies variou de acordo com o isolado testado e o critério de seleção utilizado.

Palavras-chave
Pinus; resistência; seleção

 
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