grafting of quince 'portugal' on cydonia and chaenomeles rootstocks enxertia do marmeleiro 'portugal' em porta-enxertos cydonia e chaenomeles

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ID: 132846
2008
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Abstract
In the specific case of the quince trees, there is lack of information about the emergency of their seedlings, development and time of production of rootstocks to reach the point of the grafting, as well as development of the grafts. Therefore, the objective of the present research was to study the Cydonia and Chaenomeles genera, as well as the development of the grafts during the nursery phase. Seeds of the quince tree cultivars 'Mendoza Inta-37', 'Provence', ' Portugal' and 'Japonês' were obtained from ripe fruits and submitted to cold stratification during 20 days. Soon after, the seeds were sowed in 72-cell polystyrene trays (120 cm³ of capacity/cell) containing vermiculite as substrate. After 60 days, the seedlings were put in plastic bags (3 liters of capacity) filled with a substrate containing soil: sand: manure (1:1:1 v/v). The seedlings were kept in a 50% of shadow nursery and periodically irrigated. After 180 days, the seedlings were grafted by the cleft grafting method, during the winter, using scion sticks from quince 'Portugal'. After 60 days, the percentage of alive and sprouted grafts was evaluated. The length and diameter of the grafts were measured every 30 days, a total of four times. The quince 'Japonês' showed the best performance among all the rootstocks in this experiment, being an excellent alternative as rootstock for quince trees. 'Japonês' and 'Mendoza Inta-37' were also the rootstocks that promoted the best development of the grafts.
Com relação ao marmeleiro, há carência de informações sobre a emergência das plântulas, desenvolvimento e tempo de produção dos porta-enxertos, assim como o desenvolvimento do enxerto. O objetivo do presente trabalho foi estudar o comportamento de marmeleiros do gênero Cydonia e Chaenomeles em relação ao desenvolvimento dos enxertos, em condições de viveiro. Sementes do marmeleiro 'Mendoza Inta-37', 'Provence', 'Portugal' e 'Japonês', foram extraídas de frutos maduros e estratificadas à frio por 20 dias. Em seguida, foram semeadas em bandejas de poliestireno (72 células, capacidade de 120 cm³ por célula), contendo a vermiculita como substrato. Posteriormente, as plântulas foram transplantadas em sacos plásticos (capacidade de 3 L), contendo terra + esterco de curral curtido + areia (1:1:1 v/v), como substrato. As plântulas permaneceram em viveiro sombreado (50% de luminosidade) e foram irrigadas sistematicamente. Depois de 180 dias do transplantio, as plântulas foram enxertadas pelo processo de garfagem, durante o inverno, com garfos do marmeleiro 'Portugal', sendo avaliado após 60 dias da enxertia, a porcentagem de enxertos brotados, assim como o comprimento e diâmetro do enxerto. As duas últimas variáveis foram avaliadas três vezes mais, a cada 30 dias. O marmeleiro 'Japonês' apresentou maior desempenho, demonstrando ser uma excelente alternativa como porta-enxerto para o marmeleiro e, junto como o 'Mendoza Inta-37', foram os que proporcionaram maior desenvolvimento do enxerto.
Reference Key
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Authors ;Rafael Pio;Edvan Alves Chagas;Wilson Barbosa;Ângelo Albérico Alvarenga;Enilson Abrahão;Nelson Pires Feldberg;Antônio Fernando Caetano Tombolato
Journal technocom
Year 2008
DOI
10.1590/S0100-29452008000300051
URL
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452008000300051
Keywords
propagation intergeneric graftingplant culture

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