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Germinação de sementes de maracujazeiros: água, luz, temperatura e reguladores vegetais

Authors: Zucarelli, Valdir; Ono, Elizabeth Orika; Ferreira, Gisela; Krohn, Nadia Graciele;

Germinação de sementes de maracujazeiros: água, luz, temperatura e reguladores vegetais

Abstract

A produção de mudas de maracujá é feita principalmente com o uso de sementes pela grande maioria dos produtores. Também pode ser propagado por estaquia, alporquia e cultura de tecidos in vitro. Porém, mesmo quando utilizado a enxertia, faz-se necessário o uso de sementes para a produção do porta enxerto. No entanto, a maioria das Passifloráceas apresentam problemas de germinação, o que dificulta a obtenção de mudas. Embora diversos estudos tenham sido desenvolvidos na tentativa de aumentar a germinação das sementes de maracujazeiros ainda há dificuldades na compreensão do processo germinativo e, também, divergências quanto à causa da dormência. Assim, o presente trabalho teve como objetivo fazer um levantamento dos estudos relacionados à germinação de sementes de maracujazeiros enfatizando alguns aspectos como a resistência à entrada de água, a necessidade de luz e temperatura adequadas e o uso de reguladores vegetais na superação da dormência. Observou-se que, de maneira geral, as sementes são fotoblásticas negativas e apresentam dormência do tipo fisiológica, não sendo necessária a escarificação das sementes para a germinação das mesmas.

The production of seedlings of passion fruit is done mainly with the use of seeds by most producers. It can also be propagated by cuttings, layering and in vitro tissue culture. However, even when grafting is used, it is necessary to use seeds to produce the rootstock. Nevertheless, most Passifloracea species have germination problems, making it difficult to obtain seedlings. Although several studies have been developed in an attempt to increase seed germination of passion fruit there are still difficulties in understanding the germination process and also disagreement about seed dormancy. Thus, the present study aimed to review papers related to seed germination of passion fruit emphasizing aspects such as mechanical resistance to water ingress, the need for adequate light and temperature and the use of plant growth regulators in overcoming seed dormancy. It was noticed that, in general, the passion fruit seeds are photoblastic negative and exhibit physiological dormancy, being no need of seed scarification to stimulate its germination.

Country
Brazil
Keywords

Propagação, Maracujá, Passifloracea, Passion fruit, Propagation, Passifloráceas

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
Green