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Seed germination of two critically endangered plantain species, Plantago algarbiensis and P. almogravensis (Plantaginaceae)

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The aims of this study were to determine the seed size and the effects of temperature and light on germination of Plantago algarbiensis and P. almogravensis seeds, two endemic species from Portugal that are at risk of extinction. The temperatures tested were a constant 15 or 25°C and an alternating temperature regime of 25/15°C, combined with 16 / 8 h light / dark photoperiod (light) or constant darkness. The results showed that P. algarbiensis and P. almogravensis have non-dormant seeds. Although P. algarbiensis seeds are larger and heavier, seeds of both species have similar germination requirements. The best germination results were obtained at 15°C under either light or darkness, along with the shortest mean germination time. The results are crucial for developing conservation strategies for these Plantago species.
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Document Type: Research Article

Publication date: April 1, 2012

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  • Seed Science and Technology (SST) is one of the leading international journals featuring original papers and review articles on seed quality and physiology as related to seed production, harvest, processing, sampling, storage, distribution and testing. This widely recognised journal is designed to meet the needs of researchers, advisers and all those involved in the improvement and technical control of seed quality.
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