Germination ecology of Scorpiurus subvillosus L. seeds: the role of temperature and storage time (Articolo in rivista)

Type
Label
  • Germination ecology of Scorpiurus subvillosus L. seeds: the role of temperature and storage time (Articolo in rivista) (literal)
Anno
  • 2007-01-01T00:00:00+01:00 (literal)
Alternative label
  • Gresta F., Avola G., Abbate V. (2007)
    Germination ecology of Scorpiurus subvillosus L. seeds: the role of temperature and storage time
    in Plant ecology (Dordr.)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Gresta F., Avola G., Abbate V. (literal)
Pagina inizio
  • 123 (literal)
Pagina fine
  • 130 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#altreInformazioni
  • IF 1.88 IF 5 y 2.184 n° cit 10 SJR 0.075 SJR 1.24 Category Name PLANT SCIENCES Total Journals in Category 188 Journal Rank in Category 63 Quartile in Category Q2 (literal)
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  • 190 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Università Mediterranea di Reggio Calabria - DBMAA CNR - ISAFOM Università di Catania - DISPA (literal)
Titolo
  • Germination ecology of Scorpiurus subvillosus L. seeds: the role of temperature and storage time (literal)
Abstract
  • Scorpiurus subvillosus L., wide spread in pastures of Mediterranean basin, is disappearing in the native pastures of the Hyblean plateau (Sicily, southern Italy), because of overgrazing and intensive management techniques. Moreover, it exhibits seed coat dormancy, which delays and reduces germination preventing its diffusion. This paper represents a first attempt in order to investigate changing in germination determined by storage time and temperature on seeds of two populations of S. subvillosus. Germination of S. subvillosus seeds was tested in relation to four storage time (30, 130, 200 and 360 days after harvest (DAH)), eight constant temperatures (5, 10, 15, 20, 25, 30, 35 and 40°C) and two populations of different provenience (30 and 600 m above mean sea level). The experiments were conducted either on scarified and unscarified seeds. In S. subvillosus the failure of germination under favourable conditions must be attributed only to seed coat, since seed scarification enhanced germination percentage with values up to 100% at almost all tested temperatures. In both treatments, but with a grater incidence in unscarified, seed germination increased gradually as temperature raised, peaking at 20-25°C, then declined with further increases of temperatures. At 40°C no germination occurred. Storage time induced a softening effect, which is somewhat limited by the natural ageing of seeds occurring from about 6 months after harvest. (literal)
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