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Growth and Quality of Clonal Plantlets of Conilon Coffee(Coffea canephora Pierre ex ***)Influenced by Types of Cuttings

American Journal of Plant Sciences 2014年第14期5卷 2148-2153页

作者： abraao carlos verdin filho Aldo Luiz Mauri Paulo Sergio Volpi Aymbire Francisco Almeida da Fonseca Romario Gava Ferrao Maria Amelia Gava Ferrao Wagner Nunes Rodrigues Saul de Andrade Júnior Tafarel Victor Colodetti Instituto Capixaba de Pesquisa Assistencia Técnica e Extensao Rural(Incaper) MarilandiaBrazil Empresa Brasileira de Pesquisa Agropecuaria(Embrapa Cafe) BrasiliaBrazil Centro de Ciencias Agrarias Universidade Federal do Espírito Santo(CCA-UFES)AlegreBrazil Escola Estadual Rural de Colatina(EECOR) ColatinaBrazil

To achieve high crop yieldin agriculture, the production of plantlets of superior quality is one of thebasic prerequisites. For conilon coffee, the current recommendation in theproduction of clonal plantlets through vegetative propagation is to usediagonal cuttings, in bevel form. However, there are indications that othertypes of cutting have been successfully used to produce plantlets. In thiscontext, this experiment was conducted with the objective of studying thedevelopment of plantlets of conilon coffee obtained by different types ofcuttings. The experiment was conducted in a greenhouse. The cuttings wereobtained from the middle portion of orthotropic stems of standardized *** experiment followed a split plot in time design, with three types ofcuttings (bevel, sharp bevel and straight) and two times of evaluation, withfour repetitions. At 30 and 120 days after planting, plantlets were collectedand evaluated. The results show the increase occurred in the variables due tothe straight cut when compared to the others, except for stem *** in this context, the straight cut promoted an increase in seedlingheight, production of biomass and in the Dickson’s quality index when comparedto cuttings in bevel and sharp bevel.

关键词： Coffea canephora Asexual Propagation Vegetative Propagation Multiplication

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Effect of Growth Regulators in Production and Rooting of Coffea arabica ***

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American Journal of Plant Sciences 2018年第4期9卷 628-636页

作者： Paulo Fernando Marques Cavalcanti filho Diego Corona Baitelle Sílvio de Jesus Freitas Waldinei Souza da Silva Paulo Cesar dos Santos Weverton Pereira Rodrigues Silverio de Paiva Freitas Ismael Lourenco de Jesus Freitas Tamara Locatelli abraao carlos verdin filho Guilherme Bessa Miranda Department of Plant Science State University of Northern Rio de JaneiroCampos dos GoitacazesRio de Janeiro StateBrazil

The plants of C. arabica do not naturally produce a large number of orthotropic sprouts, hindering clonal multiplication by cutting, which would be the simplest technique with a lower cost of production compared to other methods of vegetative propagation. An alternative form, used successfully in the propagation of eucalyptus, is propagation by minicutting, which consists of pruning the shoot apex of the plant, forming the ministumps, which in variable time interval emits the shoots that will be used to make minicutting. In C. arabica plants the number of shoots can be increased with the application of growth regulators and fertilizers. So, the purpose of this work was to verify the effect of growth regulators and foliar fertilizers on the emission and development of orthotropic shoots of C. arabica. The experiment was installed in a randomized complete block design, with ten treatments composed by growth regulators and fertilizers: T1 (Control);T2 (Stimulate + Sturdy + Enervig);T3 (Stimulate + Vitakelp + Biozyme);T4 (Tiba + Sturdy + Enervig);T5 (Tiba + Vitakelp + Biozyme);T6 (Brs + Sturdy + Enervig) T7 (Brs + Vitakelp + Biozyme);T8 (Stimulate);T9 (TIBA);T10 (Brs-Brassinoesteroid), each plot consisting of two plants. Biometric and physiological parameters were evaluated for the ministumps, as well as the biometric parameters of the shoots and plant survival. The results showed that there was no influence of the treatments on the biometric parameters of the ministumps. A greater number of orthotopic sprouts were obtained in treatments with the TIBA growth regulator, as well as a greater plant survival of the minicuttings, after 25 days of transplanting in a greenhouse. It was concluded that TIBA treatments influenced the production and quality of clonal minicuttings of C. arabica.

关键词： Arabica Coffee Ministumps Clonal Propagation

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