Effects of size and apical or basal portions of the tiller on the morphology of elephant grass

Autores

  • Bruno Humberto Rezende Carvalho Universidade Federal de Uberlândia
  • Bruno Nascimento Segatto Universidade Federal de Uberlândia
  • Kathleen Alves Vasconcelos Universidade Federal de Uberlândia
  • Gustavo Jordan da Silva Queiroz Universidade Federal de Uberlândia
  • Jessica Abreu de Sa Medica Universidade Federal de Uberlândia
  • Manoel Eduardo Rozalino Santos Universidade Federal de Uberlândia

Palavras-chave:

Colmo, folha, Pennisetum purpureum, senescência

Resumo

This work was developed to evaluate the effects of the size and the apical
and basal portions of the tiller on the morphology of elephant grass
(Pennisetum purpureum cv. Napier). Two experiments were performed. In
the first one, the characteristics were evaluated of basal tiller with four
sizes (80, 120, 160 and 200 cm). A completely randomized design was used,
with three replications. In the second experiment, the morphology of the
basal and apical portions, from small tillers (100 cm) and large (180 cm)
elephant grass were evaluated. The design was completely randomized
and the split-plot scheme was used, with three replications. The numbers
of living and dead leaves, stem and leaf lengths, leaf blade width, and
tiller mass increased linearly with elephant grass size. The basal portion
of the elephant grass tiller had a higher mass (56.2 g), higher percentages
of leaf dead (2.1%) and live stem (89.5%), and a lower percentage of live
leaf blade (23.4%) than the apical portion. With the increase in size, the
elephant grass tiller presents a higher percentage of structural tissues and
with a higher stage of development, as well as a lower percentage of
photosynthetic tissues. The apical portion of the elephant grass tiller has a
higher percentage of photosynthetic tissues and a lower percentage of
structural tissues and a higher stage of development compared to the
basal portion of the tiller.

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Biografia do Autor

Bruno Humberto Rezende Carvalho, Universidade Federal de Uberlândia

Mestrando em Ciências Veterinárias, Faculdade de  Medicina Veterinária, Universidade Federal de Uberlândia, Uberlândia, MG, Brasil

Bruno Nascimento Segatto, Universidade Federal de Uberlândia

Discente do curso de Zootecnia, Faculdade de Medicina Veterinária, Universidade Federal de Uberlândia, Uberlândia, MG, Brasil.

Kathleen Alves Vasconcelos, Universidade Federal de Uberlândia

Discente do curso de Zootecnia, Faculdade de Medicina Veterinária, Universidade Federal de Uberlândia, Uberlândia, MG, Brasil.

Gustavo Jordan da Silva Queiroz, Universidade Federal de Uberlândia

Discente do curso de Zootecnia, Faculdade de Medicina Veterinária, Universidade Federal de Uberlândia, Uberlândia, MG, Brasil.

Jessica Abreu de Sa Medica, Universidade Federal de Uberlândia

Graduação em Agronomia, Mestradoem Medicina Veterinária, Universidade Federal de Uberlândia, Uberlândia, MG, Brasil.

Manoel Eduardo Rozalino Santos, Universidade Federal de Uberlândia

4Professor da Faculdade de Medicina Veterinária da Universidade Federal de Uberlândia, Uberlândia, MG, Brasil

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Publicado

2018-07-25

Como Citar

Humberto Rezende Carvalho, B., Nascimento Segatto, B., Alves Vasconcelos, K., Jordan da Silva Queiroz, G., Abreu de Sa Medica, J., & Rozalino Santos, M. E. (2018). Effects of size and apical or basal portions of the tiller on the morphology of elephant grass. Veterinária Notícias, 24(1). Recuperado de https://seer.ufu.br/index.php/vetnot/article/view/41186