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| Gonçalves,Paulo de Souza; Scaloppi Júnior,Erivaldo José; Martins,Maria Alice; Moreno,Rogério Manoel Biagi; Branco,Roberto Botelho Ferraz; Gonçalves,Elaine Cristine Piffer. |
| 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... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Hevea brasiliensis; Bark thickness; Brown bast; Vigor; Yield. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2011001200009 |
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| Gonçalves,Paulo de Souza; Aguiar,Adriano Tosoni da Eira; Costa,Reginaldo Brito da; Gonçalves,Elaine Cristine Piffer; Scaloppi Júnior,Erivaldo José; Branco,Roberto Botelho Ferraz. |
| Breeding cycle in rubber extends to 20-30 years between pollination and yield assessment, distributed over three selection stages. Five hectares of small scale trial of rubber tree [Hevea brasiliensis (Willd. ex Adr. de Juss.) Muell.-Arg.], was established in the Northwestern region of São Paulo State, Brazil. The population comprises 98 clones mostly derived from intensively selected plus tree in the natural forest of rubber tree in the Amazon. Three open pollinated progeny tests were established in three experimental stations. Seedlings from 98 progenies including a commercial check (CC) were planted in each one of the three locations. Assessments were made when the plants were one, two and three years old. The variation among progenies for girth was... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Hevea brasiliensis; Variance; Covariance; Heritability correlation; Genetic test. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162009000100006 |
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| Silva,Juliano Quarteroli; Scaloppi Júnior,Erivaldo José; Moreno,Rogério Manoel Biagi; Souza,Gilberto Batista de; Gonçalves,Paulo de Souza; Scarpare Filho,João Alexio. |
| El objetivo de este trabajo fue evaluar el desempeño productivo y el contenido de macronutrientes del caucho extraído de cuatro clones de Hevea brasiliensis, en diferentes sistemas de sangría y estados fenológicos de las plantas. El experimento fue realizado en los años agrícolas de 2010 y 2011, en diseño experimental de bloques completos al azar, en parcelas subdivididas, con cuatro repeticiones. Los tratamientos principales - clones GT 1, PB 235, IAN 873 e RRIM 600 - fueron ubicados en las parcelas, y los subtratamientos, que fueron los sistemas de sangría ½S d/2, ½S d/4 ET 2,5% y ½S d/7 ET 2,5%, se ubicaron en las subparcelas. Las variables analizadas fueron producción y contenido de macronutrientes. Las muestras fueron obtenidas en los estados... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Hevea brasiliensis; Fenología; Nutrientes de caucho; Sistemas de explotación. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2012000800006 |
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