Resprouting after disturbance: an experimental study with short-lived monocarpic herbs |
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Authors: | Email author" target="_blank">Jana?MartínkováEmail author Jitka?Klime?ová Stanislav?Mihulka |
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Institution: | 1.Faculty of Biological Sciences,University of South Bohemia,?eské Budějovice,Czech Republic;2.Institute of Botany,Academy of Sciences of the Czech Republic,T?eboň,Czech Republic;3.Institute of Botany,Academy of Sciences of the Czech Republic,Pr?honice,Czech Republic |
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Abstract: | We experimentally demonstrated the ability of three short-lived monocarpic species to vegetatively regenerate (resprout) from
roots after severe disturbance. We assessed the relationship between resprouting ability and (1) timing of injury with respect
to life-cycle stage (reproductive vs. vegetative plant), life-history mode (annual vs. winter annual) and phenological stage
(flowering vs. fruiting plant), (2) nutrient availability, and (3) disturbance severity (removal of all axillary buds Yes/No).
In a chamber experiment with the annual or potentially winter annualRorippa palustris, all injured plants resprouted in all nutrient levels and day-length regimes (day-length regimes simulated conditions of
an annual and a winter annual cohort). The number of adventitious buds on roots was positively affected only by injury. The
extent of regeneration and amount of regenerated biomass were higher at high nutrient level and long-day regime. |
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