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Germination behaviour of Tricholaena teneriffae, a perennial grass from arid and semi-arid zones

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Tricholaena teneriffae is a xerophytic perennial herb that belongs to the Poaceae and has potential for use in ecological restoration programmes. To provide basic information for its conservation and reintroduction, the influence of environmental factors on seed germination was studied. Maximum germination was obtained at 25°C, corresponding to the temperature that prevails during the mid-spring season in arid and semi-arid zones of Tunisia. Seeds incubated in polyethylene glycol (PEG) solutions exhibited significantly lower germination than control, especially when water potential fell below -0.6 MPa. The highest germination (80%) was obtained under control conditions without PEG, and increasing moisture stress progressively inhibited rate and percentage of germination, which was less than 5% at -2 MPa. Seed germination was substantially delayed and reduced with an increase in NaCl to levels above 50 mM, but the percentage was not significantly reduced at low salinity (≤ 20 mM). T. teneriffae is moderately salt tolerant at the germination stage.
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Document Type: Research Article

Publication date: April 1, 2017

This article was made available online on February 21, 2017 as a Fast Track article with title: "Germination behaviour of Tricholaena teneriffae, a perennial grass from arid and semi-arid zones".

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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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