Data/hora: 12/06/2024 17:36:53

Biblioteca(s): | Embrapa Florestas; Embrapa Unidades Centrais.
Data corrente: | 22/05/2018
Data da última atualização: | 19/06/2018
Autoria: | WENDLING, I.; STURION, J. A.; STUEPP, C. A.; REIS, C. F.; RAMALHO, M. A. P.; RESENDE, M. D. V. de.
Afiliação: | IVAR WENDLING, CNPF; JOSE ALFREDO STURION, Pesquisador aposentado da Embrapa Florestas; Carlos André Stuepp, Universidade Estadual de Ponta Grossa/Departamento de Fitotecnia e Fitossanidade; CRISTIANE APARECIDA FIORAVANTE REIS, CNPF; Magno Antonio Patto Ramalho, Universidade Federal de Lavras/Departamento de Biologia; MARCOS DEON VILELA DE RESENDE, CNPF.
Título: | Early selection and classification of yerba mate progenies.
Ano de publicação: | 2018
Fonte/Imprenta: | Pesquisa Agropecuária Brasileira, Brasília, DF, v. 53, n. 3, p. 279-286, mar. 2018.
DOI: | 10.1590/S0100-204X2018000300002
Idioma: | Inglês
Notas: | Título em português: Seleção precoce e classificação de progênies de erva-mate.
Conteúdo: | The objective of this work was to evaluate the feasibility of early selection of open-pollinated yerba mate (Ilex paraguariensis) progenies, and to classify the best parents and candidates for clones. The germplasm is composed of 140 progenies collected from areas within the natural distribution of the species in Southern Brazil and a commercial genotype (control). The experiment was established in Ivaí, in the state of Paraná, Brazil, in March 1997, in randomized complete blocks, with ten replicates, and linear plots of six plants. The commercial mass (kg per plant) of leaves and branches smaller than 7 mm was harvested at 2.5, 4.5, 6.5, and 18.7 years of age. The statistical evaluation was performed using the mixed model procedure with restricted maximum likelihood/best linear unbiased prediction, using the Selegen software. High selective accuracy, significant progeny effects, and genetic variability for commercial mass production were observed for the four harvesting ages. The application of early selection for leaf mass production is feasible for yerba mate progenies harvested at 6.5 years. The selection of the best trees, either for use as parents or as candidates for cloning, provides significant gains for the genetic breeding of yerba mate.
Palavras-Chave: | Correlação genética; Erva-mate; Interação progênie x idade de colheita; Progeny x harvesting-age interaction.
Thesagro: | Clonagem; Espécie Nativa; Ilex Paraguariensis.
Thesaurus Nal: | Cloning (plants); Genetic correlation.
Categoria do assunto: | --
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/177444/1/Early-selection-and-classification-of-yerba.pdf
Registro original: | Embrapa Florestas (CNPF)

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