Minienxertia de Passiflora edulis Sims f. flavicarpa Deg. em porta-enxertos clonais de Passiflora mucronata Lam. : aspectos morfo-histológicos
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Data
2016-09-02
Autores
Oliari, Layane Segantini
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Universidade Federal do Espírito Santo
Resumo
Brazil is the largest producer of passion fruit, with 838,244 tonnes achieved in 2013
in an area of 57,277 hectares (IBGE, 2013), and the yellow passionflower (Passiflora
edulis f. flavicarpa) the most cultivated. However this species is affected by the
ground fungus Fusarium oxysporum f. sp. passiflorae causing the total withering of
the plants. Among the alternatives to be sought, there is the use of wild species,
resistant to certain diseases, such as rootstock. In this sense, P. mucronata species
becomes an option as the rootstock yellow passionflower to be resistant to the
fungus causing this disease. This study aimed to evaluate histological aspects of
grafting region and morphological of grafted seedlings of apexes of shoots of P.
edulis f. flavicarpa on P. mucronata using the mini-grafting technique proposed by
Alexandre et al. (2013), by grafting mode on top in full and simple english. The
characteristics evaluated were: attachment (%), diameter of the graft (GD), diameter
of the rootstock (RD), callus formation, starch into the tissue of the graft and
rootstock and the influence of fastening material and emerged side shoots of the
rootstock, 21 days after mini-grafting. Also anatomy grafting slit 60 days after
implementation of mini-grafting was observed. It was found that the Parafilm® tape
provides greater percentage of attachment, in the presence of starch graft reserve
parenchyma. The cells that have undergone mitosis is of primary graft parenchymal,
this being a younger tissue, cells possess their greatest division rate and the modality
top wedg is more simple and practical to implement the mini-grafting P. edulis f.
flavicarpa on P. mucronata.
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Palavras-chave
Passionflower , Grafting , Anatomy , Anatomia , Fixadores , Fastening material , Maracujazeiro
Citação
OLIARI, Layane Segantini. Minienxertia de Passiflora edulis Sims f. flavicarpa Deg. em porta-enxertos clonais de Passiflora mucronata Lam. : aspectos morfo-histológicos. 2016. 36 f. Dissertação (Mestrado em Agricultura Tropical) - Programa de Pós-Graduação em Agricultura Tropical, Universidade Federal do Espírito Santo, Sâo Mateus, 2016.