Initial development and sample dimensioning of rubber tree clones

  • Victor Hugo Santi de Oliveira
  • Gileno Brito de Azevedo
  • Larissa Pereira Ribeiro
  • Glauce Tais de Oliveira Souza Azevedo
  • Cassiano Garcia Roque
  • Tays Silva Batista
  • Paulo Eduardo Teodoro
Keywords: Hevea brasiliensis, forestry, adaptation of clones

Abstract

The current success of rubber cultivation is related to the use of clones adapted to different edaphoclimatic regions. Hence, it is important to evaluate variables that are correlated with yield. However, a common problem is choosing the plot dimensions where these variables will be measured. In view of the above, the objective of this work was to evaluate the initial development of two rubber tree clones and to determine the ideal sample unit size to characterize trunk circumference, tree height and bark thickness. The variables circumference at breast height (CBH), total height (Ht) and bark thickness (BT) were measured in seven plots of 680.4 m², in addition to determining the plot size to satisfactorily sample each of the variables measured in each clone, 52 months after planting. At 52 months, clone RRIM 937 showed better development than RRIM600 in relation to the analyzed variables. The ideal sample unit size is different for the variables in the following order: trunk circumference> total height> bark thickness. The measurement of plots with 15 trees is adequate to represent the variability of the analyzed variables, considering the acceptable error of 10%.

Downloads

Download data is not yet available.

Author Biography

Paulo Eduardo Teodoro
Engenheiro Agrônomo pela Universidade Estadual de Mato Grosso do Sul (UEMS) e Engenheiro Civil pela Universidade Anhanguera-UNIDERP. Mestre em Agronomia - área de concentração: Produção Vegetal da Universidade Estadual de Mato Grosso do Sul, Unidade Universitária de Aquidauana (UEMS/UUA), onde participa de pesquisas na área de Fitotecnia com adubos verdes, braquiária, feijão, feijão-caupi, milho, milheto e soja nos seguintes temas: análises de adaptabilidade e estabilidade fenotípica, interação Genótipo x Ambiente, repetibilidade de caracteres, divergência e variabilidade genética, análise de trilha, modelos mistos (REML/BLUP), redes neurais artificiais (RNAs), inferência bayesiana, dentre outros. Desenvolve ainda pesquisas na área de geoestatística e climatologia com ênfase em: modelos matemáticos teóricos e métodos de interpolação, analise de cluster, ajuste de funções de densidade de probabilidade, precipitação provável e tamanho da amostra.
Published
2018-10-11
How to Cite
de Oliveira, V. H. S., de Azevedo, G. B., Ribeiro, L. P., Azevedo, G. T. de O. S., Roque, C. G., Batista, T. S., & Teodoro, P. E. (2018). Initial development and sample dimensioning of rubber tree clones . Bioscience Journal, 34(5). https://doi.org/10.14393/BJ-v34n5a2018-39503
Section
Agricultural Sciences