Acta Scientiarum: Animal Sciences (Aug 2020)

Morphogenic and structural characteristics of Panicum cultivars during the establishment period in the Brazilian Northeast

  • Ana Beatriz Graciano da Costa,
  • Gelson dos Santos Difante,
  • Antonio Leandro Chaves Gurgel,
  • Emmanuel Lievio de Lima Veras,
  • Jéssica Gomes Rodrigues,
  • Marislayne de Gusmão Pereira,
  • Anna Yanka de Oliveira Santos,
  • João Virgínio Emerenciano Neto,
  • Denise Baptaglin Montagner

DOI
https://doi.org/10.4025/actascianimsci.v43i1.50984
Journal volume & issue
Vol. 43, no. 1

Abstract

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This study aimed to evaluate the morphogenic and structural characteristics of six Panicum maximum cultivars during the establishment period. A completely randomized block design with four replicates and six treatments (Tamani, Mombaça, Massai, Tanzania, Aruana and Zuri cultivars) was used. Morphogenic (leaf appearance rate, leaf elongation rate e stem elongation rate), structural (final leaf length, tiller population density e number of leaves per tiller) and productive (forage mass, leaf blade mass, stem mass, senescent material mass and leaf:stem ratio) characteristics were evaluated. There was no difference (p > 0.05) between the cultivars in terms of the number of live leaves per tiller (2.95 leaves/tiller). Mombaça cultivar had (p 0.05) between cultivars. However, leaf appearance rate was higher (p < 0.05) in Tanzania (0.07 leaves tiller day-1) than in Aruana cultivar (0.05 leaves tiller day-1). Leaf blade mass was higher (p < 0.05) in Mombaça cultivar (1518.31 kg DM ha-1), whereas Massai showed higher (p < 0.05) leaf:stem ratio (9.25). Panicum cultivars Tamani, Tanzania and Massai establishment after 75 days, while the other cultivars establish at 105 days of sowing in the Brazilian Northeast.

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