Data/hora: 16/06/2024 17:38:15

Biblioteca(s): | Embrapa Unidades Centrais.
Data corrente: | 09/01/2012
Data da última atualização: | 11/04/2018
Autoria: | VERARDI, C. K.; SCALOPPI JUNIOR, E. J.; GONÇALVES, P. de S.
Afiliação: | Cecília Khusala Verardi, Instituto Agronômico, Programa Seringueira; Erivaldo José Scaloppi Junior, Instituto Agronômico, Programa Seringueira; Paulo de Souza Gonçalves, Instituto Agronômico, Programa Seringueira.
Título: | Prediction of direct and indirect genetic gains and genotypic correlations in rubber tree progenies.
Ano de publicação: | 2011
Fonte/Imprenta: | Pesquisa agropecuária Brasileira, Brasília, DF, v. 46, n. 9, p. 1076-1081, set. 2011
Idioma: | Português
Notas: | Título em português: Predição de ganhos genéticos diretos e indiretos e correlações genotípicas em progênies de seringueira.
Conteúdo: | The objective of this work was to estimate the genetic parameters, genotypic and phenotypic correlations, and direct and indirect genetic gains among and within rubber tree (Hevea brasiliensis) progenies. The experiment was set up at the Municipality of Jaú, randomized complete block design was used, with 22 treatments (progenies), 6 replicates, and 10 plants per plot at a spacing of 3x3 m. Three-year-old progenies were assessed for girth, rubber yield, and bark thickness by direct and indirect gains and genotypic correlations. The number of latex vessel rings showed the best correlations, correlating positively and significantly with girth and bark thickness. Selection gains among progenies were greater than within progeny for all the variables analyzed. Total gains obtained were high, especially for girth increase and rubber yield, which were 93.38 and 105.95%, respectively. Young progeny selection can maximize the expected genetic gains, reducing the rubber tree selection cycle.
Palavras-Chave: | Ciclo de seleção; Direct and indirect method; Método direto e indireto; Seleção precoce; Selection cycle.
Thesagro: | Hevea Brasiliensis.
Thesaurus Nal: | early selection.
Categoria do assunto: | --
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/51867/1/46n09a15.pdf
Registro original: | Embrapa Unidades Centrais (AI-SEDE)
Exemplares: | AI-SEDE - (52463-1) - UPE - AP - PP - 630.72081 - P474 -  - DIS