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Open Access Perigynia removal improved germination in two native Carex species

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Carex spp. are frequently used in rain gardens, bioretention basins and wetland restoration projects because of their perceived tolerance of saturated soils. For large areas, the sowing of achenes is the most economical method of planting. Carex achenes can be difficult to germinate. Even when physiological and physical dormancies are alleviated, germination of the achenes may take many weeks. Removing the perigynium, a papery covering that surrounds the achene, has improved the speed and percentage of germination in some Carex spp. An experiment was conducted to test the effects of perigynia removal on the germination of C. annectens, C. brevior, C. hystericina and C. muskingumensis achenes. Perigynia removal significantly increased percent germination of C. annectens achenes and reduced the length of time needed to reach 50% germination of C. annectens and C. hystericina achenes. The germination of C. muskingumensis and C. brevior achenes were not affected by perigynia removal. Therefore, the benefits of perigynia removal for seed germination is species-specific.

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Document Type: Research Article

Publication date: December 1, 2018

This article was made available online on October 2, 2018 as a Fast Track article with title: "Perigynia removal improved germination in two native Carex species".

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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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