Seed germination, desiccation tolerance and cryopreservation of Passiflora species

Author： Veiga-Barbosa L. Mira S. González-Benito M.E. Souza M.M. Meletti L.M.M. Pérez-García F.

Publisher： International Seed Testing Association

ISSN： 1819-5717

Source： Seed Science and Technology, Vol.41, Iss.1, 2013-04, pp. : 89-97

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Abstract

Seed germination of 10 Passiflora species (P. alata, P. cincinnata, P. coriacea, P. edulis, P. edulis f. flavicarpa, P. foetida, P. giberti, P. micropetala, P. morifolia, P. mucronata and P. nitida) was studied after seed desiccation and storage in liquid nitrogen (LN, -196°C). Mechanical scarification of the seed coat was carried out to enhance seed germination for all accessions tested. Most accessions showed desiccation-tolerant seeds. In general, final germination percentages were unaffected by storage in LN, both for desiccated and for non-desiccated seeds. Therefore, seed cryopreservation could be a suitable procedure for the long-term conservation of these Passiflora species.