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Utilize este identificador para citar ou criar um link para este item: http://acervodigital.unesp.br/handle/11449/136807
Título: 
Selecting for rust (Puccinia psidii) reistance in Euclyptus grandis in São Paulo state, Brazil
Autor(es): 
Instituição: 
  • Instituto de Pesquisas e Estudos Florestais (IPEF)
  • Universidade Estadual Paulista (UNESP)
  • North Carolina State University
  • Universidade de São Paulo (USP)
  • Instituto Florestal de São Paulo (iFlorestal)
ISSN: 
0378-1127
Resumo: 
In Brazil, Eucalyptus grandis is a key species for wood production. However, some genotypes are susceptible to rust (Puccinia psidii), mainly in São Paulo State, where climatic conditions are favorable for its development. Rust represents a high economic risk to forest companies because of the high potential of damage to commercial eucalypt plantations. The aims of the present study were (i) to select progenies of E. grandis for stability and adaptability regarding resistance to rust at different locations; (ii) compare the selections under these different climatic conditions; and (iii) compare rust severity in the field with the theoretical model. We observed that climatic conditions were extremely influential factors for rust development, but even under favorable conditions for disease development, we found rust-resistant progenies. In sites unfavorable for rust development, we detected highly susceptible progenies. We found significant correlation among the genetic material, environmental conditions and disease symptoms, however, we observed a simple genotype-environmental interaction and significant genetic variability among the progenies. The average heritability was high among the progenies in all sites, indicating substantial genetic control for rust resistance. We also observed a good relationship between rust severity in the field and the theoretical model that considered annual average temperature and leaf wetness.
Data de publicação: 
2013
Citação: 
Forest Ecology and Management, v. 303, p. 91-97, 2013.
Duração: 
91-97
Palavras-chaves: 
  • Disease resistance/tolerance
  • Genetic parameters
  • Ecological zoning
  • Agrometeorology
  • Tree breeding
  • Stability and adaptability analysis
Fonte: 
http://dx.doi.org/10.1016/j.foreco.2013.04.002
Endereço permanente: 
Direitos de acesso: 
Acesso restrito
Tipo: 
outro
Fonte completa:
http://repositorio.unesp.br/handle/11449/136807
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