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apoio:
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An orchid fruit contains one million seeds. However, only a very small fraction
of these will germinate and few individuals will actually reach the adult
phase.
Orchid seeds are within the smallest existing. Their very small size and weight
allows them to be easier dispersed by the wind, sometimes over great distances.
In contrast to the seeds of other plants, they have no nourishing tissues
(endosperm and cotyledons) to provide the energy used in the early phases
of germination. Since the nourishing tissue is absent, energy is provided
by certain fungi that live in symbiotic association with orchids.
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© Copyright 2002 by Instituto de Pesquisas
Jardim Botânico do Rio de Janeiro
