A clonagem de portaenxertos afeta o comportamento inicial a campo de plantas de pessegueiro?

• Autor(a) principal: Souza, André Luiz Külkamp de
• Data de Publicação: 2014
• Tipo de documento: Tese
• Idioma: por
• Título da fonte: Repositório Institucional da UFPel - Guaiaca
• Texto Completo: http://repositorio.ufpel.edu.br/handle/ri/1147
• topic: Semi-hidropônico; Miniestaquia; Autoenraizamento; Enxertia; Semi-hidroponic; Minicutting; Self-rooting; Grafting; CNPQ::CIENCIAS AGRARIAS::AGRONOMIA

The use of minicuttings in a semi-hydroponic system for the production of seedlings of peach enables the achievement of cloned seedlings in a shorter period of time. In order to validate this system as an alternative to the conventional system, which is performed through the production of the rootstock from seed propagation and grafting the scion in the spring, it was tested the behavior in the field of peach cv. Maciel propagated in different ways, which are presented in the three chapters of this document. The objective of the first chapter was to evaluate the behavior of peach seedlings where the rootstock and scion were cloned as compared to rootstocks derived from seed. In the second chapter it was tested the influence of the cloned rootstock cultivar. The third chapter dealt with a study about the best time for performing bud grafting on the rootstocks obtained from cuttings. In the three experiments it was tested the field performance of the plants regarding vegetative and productive traits, as well as fruit quality. According to the obtained results, self-rooted plants showed greater vegetative growth and production per plant, making this technique a feasible alternative for seedling production of peach cv. Maciel. Furthermore, it was found that the use of different rootstocks did not affect the production as well as physicochemical characteristics of fruits. Additionally, seedlings obtained from vegetative bud grafting had greater average trunk and scaffold diameter, higher productivity and better physicochemical fruit quality when compared to dormant bud grafting.