NDLI: Temperature-related effects on the germination capacity of black locust (Robinia pseudoacacia L., Fabaceae) seeds

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Temperature-related effects on the germination capacity of black locust (Robinia pseudoacacia L., Fabaceae) seeds

Content Provider	Springer Nature Link
Author	Giuliani, Claudia Lazzaro, Lorenzo Mariotti Lippi, Marta Calamassi, Roberto Foggi, Bru
Copyright Year	2015
Abstract	Germination is a key trait promoting species invasiveness and has become a major goal in invasion ecology. In this study, the effects of different scarification methods and temperature regimes on seed germination performance of the invasive exotic tree Robinia pseudoacacia L. were investigated. Ripe seeds were gathered from six collection sites in Tuscany (central Italy). Mechanical, chemical and thermal scarifications and no pretreatment were applied; seeds were incubated in a range (9–21°C) of constant temperature regimes. The scarification treatments proved highly important for the germination performance of seeds in term of both final response and germination rate in time, with mechanical scarification being the most effective treatment. Temperature significantly affected the germination rate and the mean germination time of the mechanically scarified seeds. The cumulative germination rate significantly decreased with the reduction of the temperature, with the highest value in the 18–21°C regimes (ca 98%), and the lowest in the 9–12°C regimes (ca 60%). The mean germination time slightly decreased with increasing temperature, but was substantially similar between 18°C and 21°C. Our data indicate that the temperature affected the onset of seed germination and that the lowest temperature tested delayed germination. These plastic germination responses, as well as the high germination capacity at lower temperature, may result in the spread of the propagule germination over a large time interval, contributing to the invasiveness of this species.
Starting Page	275
Ending Page	282
Page Count	8
File Format	PDF
ISSN	12119520
Journal	Folia Geobotanica
Volume Number	50
Issue Number	3
e-ISSN	18749348
Language	English
Publisher	Springer Netherlands
Publisher Date	2015-09-12
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	dormancy Fabaceae germination invasive plants scarification Plant Systematics/Taxonomy/Biogeography Plant Ecology Plant Sciences Life Sciences
Content Type	Text
Resource Type	Article
Subject	Plant Science Paleontology

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