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  • 标题:Seleção simultânea de genótipos de cupuaçuzeiro e mogno brasileiro, em um sistema agroflorestal no Pará, Brasil
  • 其他标题:Simultaneous selection of cupuassu tree and Brazilian mahogany genotypes in an agroforestry system in Pará state, Brazil
  • 本地全文:下载
  • 作者:ALVES, Rafael Moysés ; CHAVES, Saulo Fabrício da Silva ; GAMA, Marcos André Piedade
  • 期刊名称:Acta Amazonica
  • 印刷版ISSN:0044-5967
  • 出版年度:2020
  • 卷号:50
  • 期号:3
  • 页码:183-191
  • DOI:10.1590/1809-4392202000711
  • 出版社:Instituto Nacional de Pesquisas da Amazônia
  • 摘要:

    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.

  • 关键词:Theobroma grandiflorum;Swietenia macrophylla;melhoramento genético;consórcio
  • 其他关键词:Theobroma grandiflorum;Swietenia macrophylla;genetic breeding;intercropping
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