Data/hora: 17/06/2024 11:54:34

Biblioteca(s): | Embrapa Unidades Centrais.
Data corrente: | 09/11/2018
Data da última atualização: | 25/02/2019
Autoria: | BURIN, C.; BISOGNIN, D. A.; LENCINA, K. H.; GIMENES, E. S.
Afiliação: | Cláudia Burin, Universidade Federal de Santa Maria - UFSM/Departamento de Fitotecnia; Dilson Antônio Bisognin, Universidade Federal de Santa Maria - UFSM/Departamento de Fitotecnia; Kelen Haygert Lencina, Universidade Federal de Santa Maria - UFSM/Departamento de Fitotecnia; Eliseo Salvatierra Gimenes, Instituto Federal de Educação, Ciência e Tecnologia Farroupilha.
Título: | Early selection of Cabralea canjerana for propagation by mini-cutting.
Ano de publicação: | 2018
Fonte/Imprenta: | Pesquisa Agropecuária Brasileira, Brasília, DF, v. 53, n. 9, p. 1018-1024, Sept. 2018.
Idioma: | Inglês
Notas: | Título em português: Seleção precoce em Cabralea canjerana para a propagação por miniestaquia.
Conteúdo: | The objective of this work was to define an early selection strategy to identify Cabralea canjerana (Meliaceae) clones with high multiplication rate. A mini-garden of 109 clones of canjerana seedlings was established in a completely randomized design, in an acclimatized greenhouse. From seedlings, the mini-stumps and mini-cuttings were obtained. Mini-cuttings were collected at five different times, and the number of mini-cuttings per mini-stump, rooting percentage, and number of rooted mini-cuttings were quantified. The number of rooted mini-cuttings per mini-stump was the only trait that showed high correlation with the others. Five groups of clones based on the number of rooted mini-cuttings per mini-stump were separated using k-means clustering, and the genetic gain from selection and Pearson correlation were estimated. The selection of the two best groups in each evaluation period resulted in high genetic gains from selection for all evaluated traits. Early selection for the number of rooted mini-cuttings discarded 65% of the evaluated clones, which increases experimental precision in evaluations of traits associated with plantlet growth and quality. Early selection for the number of rooted mini-cuttings per mini-stump at different times allows the identification of Cabralea canjerana clones with high multiplication rate.
Palavras-Chave: | Mini-stump; Minicepa; Plantlet production; Produção de muda.
Thesagro: | Enraizamento; Melhoramento.
Thesaurus Nal: | Breeding; Cabralea canjerana; Rooting.
Categoria do assunto: | --
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/185715/1/Early-selection-of-Cabralea-canjerana.pdf
Registro original: | Embrapa Unidades Centrais (AI-SEDE)
Exemplares: | AI-SEDE - (63330-1) - UPE - AP - DD -  -  -  - DIS