Flowering acceleration in native Brazilian tree species for genetic conservation and breeding


  • Gleidson Guilherme Caldas Mendes Departamento de Engenharia Florestal, Universidade Federal de Viçosa, 36570-900, Viçosa, Minas Gerais, Brazil
  • Gleison Augusto dos Santos Departamento de Engenharia Florestal, Universidade Federal de Viçosa, 36570-900, Viçosa, Minas Gerais, Brazil
  • Marcos Deon Vilela de Resende Empresa Brasileira de Pesquisa Agropecuária–Embrapa Florestas, Viçosa, 36570-900, Viçosa, Minas Gerais, Brazil
  • Sebastião Venâncio Martins Departamento de Engenharia Florestal, Universidade Federal de Viçosa, 36570-900, Viçosa, Minas Gerais, Brazil
  • Genaina Aparecida de Souza Departamento de Engenharia Florestal, Universidade Federal de Viçosa, 36570-900, Viçosa, Minas Gerais, Brazil
  • Andrei Caíque Pires Nunes Centro de Formação em Ciências Agroforestais, Universidade Federal do Sul da Bahia, 45613-204, Itabuna, Bahia, Brazil
  • Thales Guilherme Vaz Martins Departamento de Engenharia Florestal, Universidade Federal de Viçosa, 36570-900, Viçosa, Minas Gerais, Brazil




Clonal seed orchard, early flowering, greenhouse, plant breeding


Grafting and growth retardants are commonly used in breeding programs to stimulate flower production. However, little is known about their effects on Brazilian tree species. The aim of this study was to investigate the vegetative and reproductive development of grafted tree seedlings treated with paclobutrazol (PBZ) and grown under greenhouse or outdoor conditions. Potted seedlings of Jacaranda mimosifolia, Handroanthus heptaphyllus, Swietenia macrophylla, Schinus terebinthifolius, Cariniana legalis, and Hymenaea courbaril were evaluated. Shoot number, length, and circumference as well as flower and fruit numbers were determined at 50 and 90 days after PBZ application. Data were subjected to analysis of variance, and means were compared by Tukey’s test (P ≤ 0.05). Growing conditions influenced the vegetative parameters of seedlings, especially after 90 days. J. mimosifolia and S. terebinthifolius responded positively to flowering induction, and their fruit and flower numbers differed between growing environments. Potted grafts of the six native tree species were successfully grown. Grafting and PBZ application induced early flowering in J. mimosifolia and S. terebinthifolius.

Author Biographies

Gleidson Guilherme Caldas Mendes, Departamento de Engenharia Florestal, Universidade Federal de Viçosa, 36570-900, Viçosa, Minas Gerais, Brazil

Departamento de Engenharia Florestal

Gleison Augusto dos Santos, Departamento de Engenharia Florestal, Universidade Federal de Viçosa, 36570-900, Viçosa, Minas Gerais, Brazil

Departamento de Engenharia Florestal

Marcos Deon Vilela de Resende, Empresa Brasileira de Pesquisa Agropecuária–Embrapa Florestas, Viçosa, 36570-900, Viçosa, Minas Gerais, Brazil

Departamento de Engenharia Florestal e Estatística

Sebastião Venâncio Martins, Departamento de Engenharia Florestal, Universidade Federal de Viçosa, 36570-900, Viçosa, Minas Gerais, Brazil

Departamento de Engenharia Florestal

Genaina Aparecida de Souza, Departamento de Engenharia Florestal, Universidade Federal de Viçosa, 36570-900, Viçosa, Minas Gerais, Brazil

Departamento de Engenharia Florestal

Andrei Caíque Pires Nunes, Centro de Formação em Ciências Agroforestais, Universidade Federal do Sul da Bahia, 45613-204, Itabuna, Bahia, Brazil

Departamento de Engenharia Florestal

Thales Guilherme Vaz Martins, Departamento de Engenharia Florestal, Universidade Federal de Viçosa, 36570-900, Viçosa, Minas Gerais, Brazil

Departamento de Engenharia Florestal


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