Data/hora: 05/06/2024 13:55:43

Provedor de dados: | 74
País: | Brazil
Título: | The use of self-incompatibility in the production of hybrid eucalyptus seed by `Aracruz Celulose' in Brazil
Autores: | Junghans,Tatiana Góes; Peters-Robinson,Ingrid; Bertolucci,Fernando L.; Alfenas,Acelino Couto.
Data: | 1998-09-01
Ano: | 1998
Resumo: | Self-incompatibility found in a Eucalyptus grandis clone was used to promote interspecific hybridization between E. grandis and E. urophylla clones. The interspecific hybridization achieved in an open-pollinated commercial seed orchard planted in Espírito Santo, Brazil was evaluated by the multi-locus outcrossing rate (tm) of the seed producing clone, E. grandis. The percentage of outcrossed seeds reached 95.9%. The outcrossing rate of individual trees was quite variable, but was always above 70.0%. Wright's coefficient was negative (F = -0.30) revealing an excess of heterozygous genotypes in the progeny. Genetic parameters confirmed the high degree of hybridization expected in this orchard. The 800-m wide protection belt of native tropical forest that surrounds this orchard has significantly reduced pollen contamination, in comparison to a 400-m wide belt used in another local seed orchard.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47571998000300015
Editor: | Sociedade Brasileira de Genética
Relação: | 10.1590/S1415-47571998000300015
Formato: | text/html
Fonte: | Genetics and Molecular Biology  v.21 n.3 1998
Fonte: | info:eu-repo/semantics/openAccess