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dc.contributor.authorde Souza Gonçalves, Paulo-
dc.contributor.authorBortoletto, Nelson-
dc.contributor.authorCardinal, Átila Bento Beleti-
dc.contributor.authorGouvêa, Lígia Regina Lima-
dc.contributor.authorda Costa, Reginaldo Brito-
dc.contributor.authorde Moraes, Mário Luiz Teixeira-
dc.identifier.citationGenetics and Molecular Biology, v. 28, n. 4, p. 758-764, 2005.-
dc.description.abstractIn 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 age 6, select the set of best 36 clones at age 2, (b) to have the best 15 clones of age 6, select the set of best 20 clones at age 3, (c) to have the best 5 clones of age 6, select the set of best 8 clones at age 4, and (d) to have the best 3 clones of age 6, select the set of best 3 clones at age 5. More than 80% of the targeted clones on girth A or girth B basis and more than 76.7% clones on yield basis were found to get selected at steps (a) through (d). For achieving early multiplication of the most productive clone for deployment, multiplication should be started with the best 36 (i.e. 60%) clones selected at age 2. Copyright by the Brazilian Society of Genetics.en
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)-
dc.subjectEarly clonal multiplication-
dc.subjectEvaluation of clones-
dc.subjectGenetic correlation-
dc.subjectHevea brasiliensis-
dc.subjectRank correlation-
dc.subjectcontrolled study-
dc.subjectgenetic correlation-
dc.subjectgenetic selection-
dc.subjectplant age-
dc.subjectplant genetics-
dc.subjectplant yield-
dc.titleAge-age correlation for early selection of rubber tree genotypes in São Paulo State, Brazilen
dc.contributor.institutionInstituto Agronômico (IAC)-
dc.contributor.institutionAgência Paulista de Tecnologia dos Agronegócios (APTA)-
dc.contributor.institutionUCDB Programa de Desenvolvimento Local-
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)-
dc.description.affiliationInstituto Agronômico de Campinas Programa Seringueira, Caixa Postal 28, 13001-970 Campinas, SP-
dc.description.affiliationAPTA Regional Noroeste Paulista, Votuporanga, SP-
dc.description.affiliationInstituto Agronômico de Campinas Pós-graduação, Campinas, SP-
dc.description.affiliationInstituto Agronômico de Campinas Bolsista CNPq, Campinas, SP-
dc.description.affiliationUCDB Programa de Desenvolvimento Local, Campo Grande, MS-
dc.description.affiliationUniversidade Estadual Paulista Júlio de Mesquita Filho, Campus Ilha Solteira, São Paulo, SP-
dc.description.affiliationUnespUniversidade Estadual Paulista Júlio de Mesquita Filho, Campus Ilha Solteira, São Paulo, SP-
dc.rights.accessRightsAcesso aberto-
dc.relation.ispartofGenetics and Molecular Biology-
Appears in Collections:Artigos, TCCs, Teses e Dissertações da Unesp

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