Abstract
In the present work, we analyzed the histochemical aspects of Passiflora edulis seeds reserve mobilization during the first ten days of germination. Our results showed that mainly lipids present in the endosperm are used as a reserve source, and their levels reduce at the same time the radicle protrudes, between the fourth and sixth day of sowing. Furthermore, protein bodies are present in the cotyledons, which are degraded as germination occurs and are almost depleted by the time of radicle protrusion. Starch grains also appear in the late germination period, and it is not clear if there is any reserve wall polysaccharide consumption in the endosperm.
Highlights
Yellow passionfruit (Passiflora edulis Sims f. flavicarpa Deg) belongs to the Passifloraceae and is found all over Brazil, as well as in many other countries in Latin America, such as Argentina, Peru, Ecuador, Colombia, Venezuela and Paraguay (Cervi, 1997)
Lipids play an important role in the P. edulis seed and are the main source of energy for the P. edulis seed germination
Euphorbia heterophylla L. seeds showed a reduction of about 50% in lipid levels after 2 to 3 days from sowing (Suda and Giorgini, 2000) coinciding with radicle protrusion, and in Arabidopsis thaliana (L.) Heynh. seeds the lipid level showed a 65% reduction after three and half days from sowing, almost two days after radicle protrusion (Mansfield and Briarty, 1996)
Summary
Yellow passionfruit (Passiflora edulis Sims f. flavicarpa Deg) belongs to the Passifloraceae and is found all over Brazil, as well as in many other countries in Latin America, such as Argentina, Peru, Ecuador, Colombia, Venezuela and Paraguay (Cervi, 1997). Flavicarpa Deg) belongs to the Passifloraceae and is found all over Brazil, as well as in many other countries in Latin America, such as Argentina, Peru, Ecuador, Colombia, Venezuela and Paraguay (Cervi, 1997). Importance, resides in the gustative and pharmacodinamic qualities of its juice, fruit, skin and seeds. Important are the by-products of its industrialization, such as the skin, pulp and seeds, used in animal feed (Manica, 1981). The roots, leaves and seeds are anti-helminthic, and the leaves are useful against bronchopulmonary irritation, insomnia and as a tranquilizer (Cervi, 1997). The juice has a much appreciated typical flavor, rich in vitamin A, calcium and phosphorus (Ferreira, 2000)
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