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Eucalyptus pellita as a source of resistance to rust, ceratocystis wilt and leaf blight

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Author(s): Lúcio Mauro da Silva Guimarães | Miranda Titon | Douglas Lau | Leonardo Novaes Rosse | Leonardo Sarno Soares Oliveira | Carla Cristina Gonçalves Rosado | Guilherme Gegenheiner Ornelas Christo | Acelino Couto Alfenas

Journal: Crop Breeding and Applied Biotechnology
ISSN 1518-7853

Volume: 10;
Issue: 2;
Start page: 124;
Date: 2010;
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Keywords: Eucalyptus | Puccinia psidii | Ceratocystis fimbriata | Cylindrocladium pteridis | disease.

ABSTRACT
Rust (Puccinia psidii), ceratocystis wilt (Ceratocystis fimbriata) and cylindrocladium leaf blight (Cylindrocladium pteridis) are important diseases of eucalyptus. Planting of resistant genotypes is the most suitable control strategy of forest diseases under field condition. Resistance level of 23 Eucalyptus pellita clones was evaluated by artificial inoculations. Among the inoculated clones, 12 were resistant to rust, 16 to ceratocystis wilt and 12 to cylindrocladium leaf blight, and three of them were resistant to all three diseases. The high intra-specific variability found in this study demonstrates the importance of E. pellita as a disease resistance source to be employed for introgression of novel resistance genes in eucalyptus genetic breeding programs.
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