Periódicos
URI permanente desta comunidadehttps://thoth.dti.ufv.br/handle/123456789/3352
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Resultados da Pesquisa
Item Early induction of orthotropic shoots in Coffea canephora(Universidade Federal de Viçosa, 2020) Espindula, Marcelo Curitiba; Araújo, Larissa Fatarelli Bento de; Schmidt, Raquel; Dias, Jairo Rafael Machado; Rocha, Rodrigo BarrosIn Coffea canephora, the number of orthotropic shoots is directly related to plant yield. The objective of this study was to evaluate the vegetative and yield performance of Coffea canephora, from the botanical variety Conilon, under different management systems for early emission of orthotropic shoots. The experiment was carried out in Ouro Preto do Oeste, Rondônia, between November 2011 and May 2014. Three types of management techniques were tested for early induction of orthotropic shoots in coffee trees (T1 = bending of the orthotropic shoot; T2 = apical pruning of the orthotropic shoot, T3 = free growing). The experiment was conducted in a randomized block design with 20 replicates. Each block consisted of a clonal genotype (clone) from the Embrapa Coffee Breeding Program. The techniques pruning and apical pruning were efficient to induce early growth of orthotropic shoots in Coffea canephora, resulting in higher yield in the first commercial bean production.Item Different volumes of tubes for clonal propagation of Coffea canephora from seedlings(Editora UFLA, 2018-01) Espindula, Marcelo Curitiba; Balbino, Tony José; Jaraceski, Rutinéia; Teixeira, Alexsandro Lara; Dias, Jairo Rafael Machado; Teixeira, Richelly Gisela PasqualottoThe aim in the present study was to evaluate the growth of Coffea canephora cv. ‘Conilon BRS Ouro Preto’ seedlings in different tube volumes. The experiment was performed at Embrapa Rondônia plant nursery in Ouro Preto do Oeste, Rondônia, Brazil, from July to November 2013. The treatments consisted of five tube volumes (50, 100, 170, 280 and 400 cm 3) plus one control composed by polyethylene bags (11 cm width x 20 cm height) with capacity of 770 cm 3 . The experimental design was a randomized complete block design with 15 replicates, formed by 15 clones that compose the Conilon ‘BRS Ouro Preto’ cultivar. The tube volume of 280 cm 3 provide the best vegetative performance of seedlings, similarly to volume of 400 cm 3 , thus, the use of larger tubes would not justify. Tubes of 50, 100 and 170 cm 3 produce seedlings with physiological quality similar to the control until 130 days after staking, but may limit the development of seedlings in a longer period.