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Provedor de dados:  PAB
País:  Brazil
Título:  Assessment of growth and yield performance of rubber tree clones of the IAC 500 series
Autores:  Gonçalves,Paulo de Souza
Scaloppi Júnior,Erivaldo José
Martins,Maria Alice
Moreno,Rogério Manoel Biagi
Branco,Roberto Botelho Ferraz
Gonçalves,Elaine Cristine Piffer
Data:  2011-12-01
Ano:  2011
Palavras-chave:  Hevea brasiliensis
Bark thickness
Brown bast
Resumo:  The objective of this work was to evaluate the performance of 15 clones of the IAC 500 series of Hevea brasiliensis, developed at Instituto Agronômico (IAC), over a 12-year period, in the northwest region of São Paulo State, Brazil. The 15 new clones evaluated are primary clones obtained from selected ortets within half-sib progenies. The clone RRIM 600, of Malaysian origin, was used as the control. Dry rubber yield performance over a four-year period, mean girth at the tenth year, girth increment before and during tapping, thermal properties of the natural rubber produced and other characters of the laticiferous system were evaluated. Forty percent of the clones were superior in comparison to the control for yield. Clone IAC 500 recorded the highest yield (66.81 g per tree per tapping) over four years of tapping, followed by IAC 502 (62.37 g per tree per tapping), whereas the control recorded 48.71 g per tree per tapping. All selected clones were vigorous in growth. The natural rubber from this IAC clones showed thermal stability up to 300ºC. No differences were observed in the thermal behavior of rubber among the IAC series and the RRIM 600 clones. The clones IAC 500, IAC 501, IAC 502, IAC 503 and IAC 506 are the more promising for small-scale plantations, due to growth and yield potential.
Tipo:  Info:eu-repo/semantics/article
Idioma:  Inglês
Editor:  Embrapa Secretaria de Pesquisa e Desenvolvimento

Pesquisa Agropecuária Brasileira
Relação:  10.1590/S0100-204X2011001200009
Formato:  text/html
Fonte:  Pesquisa Agropecuária Brasileira v.46 n.12 2011
Direitos:  info:eu-repo/semantics/openAccess

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