Consulta: creatorFacets:"Cardinal,Átila Bento Beleti"
Registros recuperados: 4
Data/hora: 04/06/2024 00:27:11

Age-age correlation for early selection of rubber tree genotypes in São Paulo State, Brazil
Provedor de dados: 74
Autores: Gonçalves,Paulo de Souza; Bortoletto,Nelson; Cardinal,Átila Bento Beleti; Gouvêa,Lígia Regina Lima; Costa,Reginaldo Brito da; Moraes,Mário Luiz Teixeira de.
In a field trial involving 68 rubber tree (Hevea spp.) clones calculation of genotypic correlation coefficients revealed significant age-age correlation from age 1 to 6 (immature period) for girth A and for age 7 to 12 (mature period) for girth B and for age 7 to 12 (production of latex) for yield. Rank correlation coefficients between all immature ages of girth (girth A), all ages of mature girth (girth B) and all annual rubber production (yield) were significant for the three traits, with the coefficients decreasing with increasing age. Selection of the sets of best 30, 15, 10 and 5 clones from the available 68 clones at a given age was generally accompanied by a descending order of percentage success. It was suggested: (a) to have the best 30 clones of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hevea brasiliensis; Early clonal multiplication; Genetic correlation; Rank correlation; Evaluation of clones.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572005000500018

Genetic variability and selection for laticiferous system characters in Hevea brasiliensis
Provedor de dados: 74
Autores: Gonçalves,Paulo de Souza; Cardinal,Átila Bento Beleti; Costa,Reginaldo Brito da; Bortoletto,Nelson; Gouvêa,Lígia Regina Lima.
Six laticiferous system characters were investigated in 22 three-year-old, half-sib rubber tree [Hevea brasiliensis (Willd. ex Adr. de Juss.) Muell.-Arg.] progenies, evaluated at three sites (Votuporanga, Pindorama and Jaú, all in the São Paulo State, Brazil). The traits examined were: average rubber yield (Pp), average bark thickness (Bt), number of latex vessel rings (Lv), average distance between consecutive latex vessel rings (Dc), density of latex vessels per 5 mm per ring averaged over all rings (Dd) and the diameter of the latex vessels (Di). The joint analysis showed that site effect and progeny x sites interaction were significant for all traits, except Lv. Estimates of individual heritabilities across the three sites were high for Bt; moderate...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hevea brasiliensis; Rubber yield; Laticiferous traits; Genetic parameters.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572005000300014

Stock-scion interactions on growth and rubber yield of Hevea brasiliensis
Provedor de dados: 63
Autores: Cardinal,Átila Bento Beleti; Gonçalves,Paulo de Souza; Martins,Antônio Lúcio Mello.
Rubber tree cultivation [Hevea brasiliensis (Willd. ex Adr. de Juss.) Muell.-Arg.] uses mostly the budding propagation method, however the expected stand uniformity due to the use of vegetative propagation is theoretical, since high variation for yield and vigor is caused by rootstock influence. The objective of this study was to assess several combinations between clonal rootstocks and clone scions through diallel analysis, aiming at high productivity and vigor. Data consisted of five years of dry rubber yield and girth at panel opening from an experiment using a split-plot design with four replications, conducted at Pindorama, SP, Brazil, considering six rootstocks (GT 1, IAN 873, PB 235, RRIM 600, RRIM 701 and unselected seedlings) and six scions (GT 1,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Compatibility; Diallel analysis; Girth; Grafting; Rubber tree.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162007000300004

Influência de seis porta-enxertos sobre a produção de clones superiores de seringueira
Provedor de dados: 53
Autores: Cardinal,Átila Bento Beleti; Gonçalves,Paulo de Souza; Martins,Antônio Lúcio Mello.
Na cultura da seringueira [Hevea brasiliensis (Willd. ex Adr. de Juss.) Muell.-Arg.] o método de propagação mais utilizado é a enxertia. No entanto, observa-se que a uniformidade esperada pela propagação vegetativa não é verificada em condições de campo, pois altas variações para as variáveis vigor e produção de borracha são detectadas em seringais comerciais, causados pela influência dos porta-enxertos utilizados. Com base nesse impedimento e na importância econômica da cultura para o Estado de São Paulo, este trabalho teve por objetivo principal indicar as melhores combinações de clones com porta-enxertos clonais para plantio no Estado, visando-se à alta produção de borracha. Foram analisados dados de cinco anos de produção de borracha seca de um...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hevea; Borracha natural; Enxertia; Propagação vegetativa.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052007000200011