Publicação: Selection of Eucalyptus grandis families across contrasting environmental conditions
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Data
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Pós-graduação
Curso de graduação
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Editor
Brazilian Soc Plant Breeding
Tipo
Artigo
Direito de acesso
Acesso aberto
Resumo
The objective was to select productive and stable E. grandis families across contrasting sites in Brazil and Uruguay. Survival and growth of 130 open pollinated families were evaluated three years after planting. Survival ranged from 28 to 89% and mean annual increment from 20.5 to 48.4 m(3)ha(-)y(-1). Low productivity in one site was attributed to unusually low rainfall and in the other, because of Cylindrodadium leaf disease. Heritability among families and the correlation family by environment were intermediate. Genetic pairwise correlations ranged from 0.03 to 0.81 across sites. The lowest genetic correlation between sites was observed where Cylindrocladium leaf disease occurs. Selection of top families across sites allowed selecting the best ones in each site. However, the effect of genotype-environment interactions was observed where climatic conditions are not adequate to the E. grandis, favoring the occurrence of Cylindrocladium disease.
Descrição
Palavras-chave
GEI, biotic and abiotic stress, productivity, adaptability, ecological zoning
Idioma
Inglês
Como citar
Crop Breeding And Applied Biotechnology. Vicosa-mg: Brazilian Soc Plant Breeding, v. 19, n. 1, p. 47-54, 2019.
