Pitaya: propagação e crescimento de plantas
Carregando...
Data
2008-07-03
Autores
Cavalcante, Ítalo Herbert Lucena [UNESP]
Título da Revista
ISSN da Revista
Título de Volume
Editor
Universidade Estadual Paulista (Unesp)
Resumo
Dentre as frutíferas exóticas, a pitaya vermelha (Hylocereus undatus) apresenta potencial como opção para diversificação da fruticultura nacional e incremento de renda no campo. Os cultivos com essa frutífera no Brasil ainda são poucos e há necessidade de informações locais com a finalidade de subsidiar potenciais produtores. Neste sentido, o presente trabalho teve por objetivo: i) identificar a co-existência dos estágios juvenil e adulto e o efeito na propagação da pitaya por estaquia; ii) estudar anatomicamente as raízes adventícias de estacas de pitaya; iii) avaliar o desenvolvimento e o estado nutricional da pitaya em função da intensidade luminosa e adubação orgânica. No primeiro estudo, a posição de coleta da estaca exerceu efeito quantitativo na formação de raízes da pitaya, as estacas juvenis apresentaram 35% mais estacas com raízes que estacas adultas, permitindo concluir que os estágios juvenil e adulto co-existem no dossel da pitaya. No segundo estudo, observou-se que as raízes adventícias em estacas de pitaya originam-se no periciclo, não ocorre formação de raízes a partir de calos e não há a formação de calos em estacas de pitaya. A partir do terceiro estudo infere-se que no cultivo da pitaya é necessária cobertura contra a incidência direta dos raios solares, onde a tela de propileno com 50% ou 75% de luminosidade podem ser usados, os níveis de esterco influenciaram significativamente as concentrações de N, P, K e Na, a concentração no tecido vegetal do N, P, K, S, B, Zn e Na foram incrementadas com o aumento do nível de esterco fornecido à planta e o fornecimento de 20 L.cova-1 de esterco bovino pode ser adotado como quantitativo no preparo de covas de pitaya.
Among the exotic fruitful species, pitaya (Hylocereus undatus) presents potential as an option for diversification of Brazilian fruit culture and incomes enhancement in land. This fruitful is little cultivated in Brazil and local information is need to inform potential farmers. In this way, the present work had as objective: i) to identify the co-existence of juvenile and adult stages and it’s effects on cutting propagation of pitaya; ii) to study anatomically the adventitious roots of pitaya cuttings; iii) to evaluate the development and nutritional status of pitaya as a function of light intensity and organic fertilization. In the first study, the position from which the cutting is taken had an quantitative effect on root formation of pitaya, juvenile cuttings presented 35% more cuttings with roots than adult cuttings, allowing it concludes that juvenile and adult stages co-exist in pitaya canopy. In the second study it was observed that the adventitious roots of pitaya cuttings initiate at the pericycle, there is no root formation from callus and there is no callus formation on pitaya cuttings. From the third study it infers that in pitaya cultivation a covering against light rays is need, where a shade degree of 50% or 75% can be used, the organic manure levels influenced significantly the concentrations of N, P, K and Na, the stem concentration of N, P, K, S, B, Zn and Na were enhanced with organic fertilizer level increasing and the 20 L/plant level can be adopted as quantitative for cave preparation for pitaya cultivation.
Among the exotic fruitful species, pitaya (Hylocereus undatus) presents potential as an option for diversification of Brazilian fruit culture and incomes enhancement in land. This fruitful is little cultivated in Brazil and local information is need to inform potential farmers. In this way, the present work had as objective: i) to identify the co-existence of juvenile and adult stages and it’s effects on cutting propagation of pitaya; ii) to study anatomically the adventitious roots of pitaya cuttings; iii) to evaluate the development and nutritional status of pitaya as a function of light intensity and organic fertilization. In the first study, the position from which the cutting is taken had an quantitative effect on root formation of pitaya, juvenile cuttings presented 35% more cuttings with roots than adult cuttings, allowing it concludes that juvenile and adult stages co-exist in pitaya canopy. In the second study it was observed that the adventitious roots of pitaya cuttings initiate at the pericycle, there is no root formation from callus and there is no callus formation on pitaya cuttings. From the third study it infers that in pitaya cultivation a covering against light rays is need, where a shade degree of 50% or 75% can be used, the organic manure levels influenced significantly the concentrations of N, P, K and Na, the stem concentration of N, P, K, S, B, Zn and Na were enhanced with organic fertilizer level increasing and the 20 L/plant level can be adopted as quantitative for cave preparation for pitaya cultivation.
Descrição
Palavras-chave
Frutas - Cultivo, Propagação por estaquia, Pitaya, Estágio juvenil, Estágio adulto, Raízes adventícias, Estaquia, Sombreamento, Esterco bovino, Hylocereus undatus, Juvenile stage, Adult stage, Adventitious roots, Cutting, Shading, Bovine manure
Como citar
CAVALCANTE, Ítalo Herbert Lucena. Pitaya: propagação e crescimento de plantas. 2008. vii, 94 f. Tese (doutorado) - Universidade Estadual Paulista, Faculdade de Ciências Agrárias e Veterinárias, 2008.