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New findings on seed ecology of Ribes sardoum: can it provide a new opportunity to prevent the extinction of a threatened plant species?
- Source :
- Systematics and Biodiversity. 15:480-488
- Publication Year :
- 2017
- Publisher :
- Informa UK Limited, 2017.
-
Abstract
- Ribes sardoum, the most threatened endemic plant of Sardinia, is included in the Habitats Directive (92/43/EEC) and it was considered Critically Endangered in the global IUCN Red Lists. This species has been reported to have an extremely low fertility, scarce fruit production, low seed viability and a general inability to reproduce sexually. Fruits were collected for the first time from the remnant population, and the requirements for seed germination were investigated in the laboratory. Seeds were incubated at different temperatures (10, 15, and 20°C) and, in addition, they were exposed to a warm stratification (W) or a move-along treatment characterized by three cold temperature regimes (CCC). Seeds were also sown on the surface of 1% agar water with 250 mg·L−1 of GA3. At maturity, seeds have a linear underdeveloped embryo. Germination percentage between 35% and 65% were detected in the control and W groups. A low germination percentage occurred after CCC and during GA3 treatment. W treatment speeds up ...
- Subjects :
- 0106 biological sciences
education.field_of_study
Ecology
Population
food and beverages
Plant Science
Stratification (vegetation)
Biology
biology.organism_classification
010603 evolutionary biology
01 natural sciences
Critically endangered
Ribes sardoum
Germination
Threatened species
IUCN Red List
Habitats Directive
education
Ecology, Evolution, Behavior and Systematics
010606 plant biology & botany
Subjects
Details
- ISSN :
- 14780933 and 14772000
- Volume :
- 15
- Database :
- OpenAIRE
- Journal :
- Systematics and Biodiversity
- Accession number :
- edsair.doi...........37b08a66730003e601b5a94a7a26d63a