Height and number of shoots on the survival and development of micropropagated bamboo plantlets during pre-acclimatization

Authors

  • Paulo Arthur Almeida do Vale
  • João Bosco de Oliveira Júnior
  • Frederico Henrique da Silva Costa
  • Jonny Everson Scherwinski-Pereira Embrapa Recursos Genéticos e Biotecnologia, Brasilia- DF http://orcid.org/0000-0001-6271-332X

Abstract

During the in vitro multiplication of bamboo plantlets, it is common the formation of shoots aggregates. Once individualized, these can yield a greater number of plantlets than if planted in clusters. This study aimed to evaluate the effect of the relationship between height and number of initial shoots in micropropagated bamboo plantlets on the survival and development of plants, during the pre-acclimatization stage. Guadua aff. chaparensis shoots, after successive subcultures of in vitro multiplication, were classified into three height classes (2.5-5.0 cm; 5.1-10.0 cm; 10.1-15.0 cm) and number of aggregate shoots (one shoot per plantlet/single-stem plantlet, two and three shoots per plantlet) and pre-acclimatized in a commercial substrate composition plus washed sand. The plantlets were evaluated for survival, height, number of new shoots and roots, shoot and root fresh and dry mass. In plantlets from micropropagation, the plant height does not influence the survival rates, being acclimatized preferably at heights between 5.0 cm and 15.0 cm, with survival rates of up to 97 %. Plantlets with height starting at 5.1 cm and composed of 2 or 3 initial shoots show a greater vigor and ex vitro growth, a fact evidenced by the higher values obtained in relation to height and emission of new shoots and roots, as well as a greater fresh and dry biomass accumulation.


KEYWORDS: Guadua aff. chaparensis, Bambusoideae, vegetative propagation.

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Published

2019-03-11

How to Cite

VALE, P. A. A. do; OLIVEIRA JÚNIOR, J. B. de; COSTA, F. H. da S.; SCHERWINSKI-PEREIRA, J. E. Height and number of shoots on the survival and development of micropropagated bamboo plantlets during pre-acclimatization. Pesquisa Agropecuária Tropical [Agricultural Research in the Tropics], Goiânia, v. 49, p. e53751, 2019. Disponível em: https://revistas.ufg.br/pat/article/view/53751. Acesso em: 18 sep. 2024.

Issue

Vol. 49 (2019)

Section

Special Supplement: Bamboo

License

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