Data/hora: 19/06/2024 02:47:04

Biblioteca(s): | Embrapa Unidades Centrais.
Data corrente: | 10/07/2014
Data da última atualização: | 01/06/2017
Autoria: | PARTELLI, F. L.; COVRE, A. M.; OLIVEIRA, M. G.; ALEXANDRE, R. S.; VITÓRIA, E. L. da; SILVA, M. B. da.
Título: | Root system distribution and yield of 'Conilon' coffee propagated by seeds or cuttings.
Ano de publicação: | 2014
Fonte/Imprenta: | Pesquisa Agropecuária Brasileira, Brasília, DF, v. 49, n. 5, p. 349-355, maio. 2014.
Idioma: | Inglês
Notas: | Título em português: Distribuição do sistema radicular e produtividade do café 'Conilon' propagado por sementes ou estaquia.
Conteúdo: | The objective of this work was to evaluate the root system distribution and the yield of 'Conilon' coffee (Coffea canephora) propagated by seeds or cuttings. The experiment was carried out with 2x1 m spacing, in an Oxisol with sandy clay loam texture. A randomized complete block design was used, following a 2x9x6 factorial arrangement, with two propagation methods (seeds and cuttings), nine sampling spacings (0.15, 0.30, 0.45, 0.60, 0.75, and 0.90 m between rows, and 0.15, 0.30, and 0.45 between plants within rows), six soil depths (0.10?0.20, 0.20?0.30, 0.30?0.40, 0.40?0.50, and 0.50?0.60 m), and six replicates. Soil cores (27 cm3) with roots were taken from 12 experimental units, 146 months after planting. The surface area of the root system and root diameter, length, and volume were assessed for 13 years and, then, correlated with grain yield. The highest fine root concentration occurred at the superficial soil layers. The variables used to characterize the root system did not differ between propagation methods. Moreover, no differences were observed for net photosynthetic CO2 assimilation rate, stomatal conductance, internal CO2 concentrations, and instantaneous water&#8209;use efficiency in the leaves. Cutting&#8209;propagated plants were more productive than seed&#8209;propagated ones.
Palavras-Chave: | Comprimento de raiz; Diâmetro de raiz; Root diameter; Volume de raiz.
Thesagro: | Coffea Canephora; Propagação vegetativa.
Thesaurus Nal: | Vegetative propagation.
Categoria do assunto: | --
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/104883/1/Root-system-distribution-and-yield.pdf
Registro original: | Embrapa Unidades Centrais (AI-SEDE)
Exemplares: | AI-SEDE - (56382-1) - UPE - AP - PP - 630.72081 - P474 -  - DIS