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Definition of Recalcitrant seed

Recalcitrant seed Definition from Science & Technology Dictionaries & Glossaries
Bioglossary
Description: Seed that does not survive drying and freezing.
Source: Specialized encyclopedia and dictionaries
© European Communities, 1995-2004
Recalcitrant seed Definition from Encyclopedia Dictionaries & Glossaries
Wikipedia English - The Free Encyclopedia
Recalcitrant seeds (sometimes known as unorthodox seeds) are seeds that do not survive drying and freezing during ex-situ conservation. Moreover, these seeds cannot resist the effects of drying or temperatures less than 10°C; thus, they cannot be stored for long periods like orthodox seeds because they can lose their viability. Plants that produce recalcitrant seeds include avocado, mango, mangosteen, lychee, cocoa, rubber tree, some horticultural trees, and several plants used in traditional medicine such as species of Virola and Pentaclethra. Generally speaking, most tropical pioneer species have orthodox seeds but many climax species have recalcitrant or intermediate seeds.

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