Age-age correlation for early selection of rubber tree genotypes in São Paulo State, Brazil

Página do item simplificado
dc.contributor.authorGonçalves, Paulo de Souza
dc.contributor.authorBortoletto, Nelson
dc.contributor.authorCardinal, Átila Bento Beleti
dc.contributor.authorGouvêa, Lígia Regina Lima
dc.contributor.authorCosta, Reginaldo Brito da
dc.contributor.authorMoraes, Mário Luiz Teixeira de
dc.date.accessioned2024-05-16T12:12:14Z
dc.date.available2024-05-16T12:12:14Z
dc.date.issued2005
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.
dc.identifier.issn1415-4757
dc.identifier.otherS1415-47572005000500018-scl
dc.identifier.urihttps://repositorio-aptaregional.agricultura.sp.gov.br/handle/123456789/1570
dc.relation.ispartofGenetics and Molecular Biology
dc.subjectHevea brasiliensis
dc.subjectearly clonal multiplication
dc.subjectgenetic correlation
dc.subjectrank correlation
dc.subjectevaluation of clones
dc.titleAge-age correlation for early selection of rubber tree genotypes in São Paulo State, Brazil
dc.typeArtigos
oaire.citation.endPage764
oaire.citation.issue4
oaire.citation.startPage758
oaire.citation.volume28

Arquivos

Licença do Pacote
Agora exibindo 1 - 1 de 1
Nenhuma Miniatura disponível
Nome:
license.txt
Tamanho:
1.71 KB
Formato:
Item-specific license agreed to upon submission
Descrição:
Baixar

Coleções

Artigos