Simultaneous selection of cupuassu tree and Brazilian mahogany genotypes in an agroforestry system in Pará state, Brazil
Acta amaz
;
50(3): 183-191, jul. - set. 2020.
Article
Dans Anglais
| LILACS
| ID: biblio-1118775
ABSTRACT
This study aimed to evaluate and select progenies and matrices of cupuassu-tree siblings, and to select Brazilian mahogany matrices with superior characteristics to be used in agroforestry systems (AFS). Twenty-five full cupuassu tree sibling progenies and one Brazilian mahogany half-sibling progeny were evaluated. The study was conducted for 14 years in a commercial property in Tomé Açu, Pará State, Brazil. The number of fruits and fruit yield per plant, as well as the rate of plants with symptoms of witches' broom disease, were used as response variables for cupuassu. For mahogany, the following response variables were used total height, commercial height, crown height, diameter at breast height and commercial wood volume. There were five cupuassu tree progenies with interesting characteristics to be used in AFS. Based on the high values observed in the selection accuracy and heritabilities, a good potential for the selection of promising individuals in the cupuassu tree population is inferred. Based on the ranking of genotypic values and their agronomic performance, 10 matrices of cupuassu tree were selected. For Brazilian mahogany, three matrices showed excellent silvicultural performance. The matrices of these two species should be propagated vegetatively in order to evaluate clonal tests. (AU)
Texte intégral:
Disponible
Indice:
LILAS (Amériques)
Sujet Principal:
Plantes
/
Amélioration des plantes
/
Génotype
Pays comme sujet:
Amérique du Sud
/
Brésil
langue:
Anglais
Texte intégral:
Acta amaz
Thème du journal:
Science
Année:
2020
Type:
Article
Pays d'affiliation:
Brésil
Institution/Pays d'affiliation:
Empresa Brasileira de Pesquisa Agropecuária/BR
/
Universidade Federal Rural da Amazônia/BR
/
Universidade Federal de Viçosa/BR
/
Universidade Federal do Ceará/BR
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