Data/hora: 22/06/2024 02:25:45

Biblioteca(s): | Embrapa Florestas.
Tipo da produção científica: | Artigo em Periódico Indexado
Circulação/Nível: | A - 2
Data corrente: | 15/01/2013
Data da última atualização: | 17/08/2015
Autoria: | SILVA, G. A. P.; GOUVÊA, L. R. L.; VERARDI, C. K.; RESENDE, M. D. V. de; SCALOPPI JUNIOR, E. J.; GONÇALVES, P. de S.
Afiliação: | Guilherme Augusto Peres Silva, Instituto Agronômico, Programa Seringueira; Lígia Regina Lima Gouvêa, Instituto Agronômico, Programa Seringueira; Cecília Khusala Verardi, Instituto Agronômico, Programa Seringueira; MARCOS DEON VILELA DE RESENDE, CNPF; Erivaldo José Scaloppi Junior, Agência Paulista de Tecnologia dos Agronegócios; Paulo de Souza Gonçalves, Instituto Agronômico, Programa Seringueira.
Título: | Genetic parameters and correlation in early measurement cycles in rubber trees.
Ano de publicação: | 2012
Fonte/Imprenta: | Euphytica, July, 2012.
DOI: | 10.1007/s10681-012-0751-8
Idioma: | Inglês
Conteúdo: | Knowledge of the traits present in plant populations of a species is essential to carry out selection and breeding. The objective of the present study was to estimate the genetic parameters and correlate genetically and phenotypically the variables rubber yield, annual trunk girth increase, number of latex vessel rings and bark thickness in early measurement cycles. A total of 22 rubber tree progenies (Hevea brasiliensis) were assessed in three locations during three early measurement cycles. The bark thickness variable correlated significantly for the three increase measurements made in the locations of Jaú, Pindorama and Votuporanga. The progeny mean based joint hereditability showed mean values greater than individual plants and within progeny plants of 0.848, 0.286 and 0.242, respectively. The variables annual trunk girth increase and bark thickness are genetically correlated variables. Rubber yield is correlated genetically with bark thickness that permits simultaneous selection for the two characteristics. The early measurement cycles were efficacious for finding genetic variability among the genotypes.
Palavras-Chave: | Hereditability.
Thesagro: | Genética; Hevea Brasiliensis.
Thesaurus Nal: | genetic correlation; progeny.
Categoria do assunto: | --
Registro original: | Embrapa Florestas (CNPF)
Exemplares: | CNPF - (50679-1) - UPC - AP - DD -  -  -  - DIS