Germination Studies in Endemic Plant Species of the Iberian Peninsula

Pérez-García, Francisco J.; Iriondo, José María; González‐Benito, M. Elena; Carnes, Luis F; Tapia, José Luis; Prieto, Cristián Felipe Bustamante; Plaza, Rosario; Pérez, César

doi:10.1080/07929978.1995.10676608

Cited by 42 publications

(27 citation statements)

References 10 publications

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“…Cistaceae and Leguminosae seeds have a coatimposed dormancy which is mainly due to water impermeability (Thanos et al 1992;Pe´rez-Garcı´a et al 1995;Herranz et al 1998Herranz et al , 1999. Consequently, seeds of Cistaceae and legume species included in the study were mechanically scarified by abrasion between two sheets of fine-grained sandpaper before being tested for germination.…”

Section: Seed Scarificationmentioning

confidence: 99%

Effect of allelopathic compounds produced by Cistus ladanifer on germination of 20 Mediterranean taxa

et al. 2005

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In order to analyze the extent to which allelopathic action of Cistus ladanifer may influence the successional progression towards Mediterranean sub-climacic shrublands and the geographical distribution of other species, the inhibitory effect of Cistus ladanifer extracts on the germination of 20 Mediterranean species was analyzed. Five of the species tested were characteristic of maquis sub-climacic shrublands: Arbutus unedo, Adenocarpus argyrophyllus, Phillyrea angustifolia, Phillyrea latifolia, and Rhamnus alaternus. Tests were also carried out on 6 Cistaceae species in order to evaluate the auto-toxicity rate of allelopathic extracts: Halimium umbellatum subsp. viscosum, Halimium ocymoides, Cistus ladanifer, Cistus salvifolius, Cistus monspeliensis, and Cistus populifolius. Nine herbaceous species sharing the natural habitat with C. ladanifer were also examined. Results confirmed a clear inhibitory and delaying effect of aqueous C. ladanifer-leaf extracts on the germination of P. angustifolia, P. latifolia, R. alaternus, H. ocymoides, C. populifolius, Erysimum lagascae, Brassica barrelieri, Silene tridentata, and Moricandia moricandioides. Assays with soil collected below the canopy of the C. ladanifer community showed more pronounced inhibitory effect on sub-climacic shrub species than the aqueous extracts. In contrast, the opposite pattern was detected when analyzing the allelopathic effect of natural soil on Cistaceae and herbaceous species. Allelopathic compounds produced by C. ladanifer showed little auto-toxicity. The inhibitory effect of phytotoxic compounds accumulated in the jaral soil upon germination of A. unedo, B. barrelieri, and M. moricandioides was eliminated by heating soil at 150°C for 10 min. Phenolic compounds (i.e. ferulic, p-hydroxybenzoic, vanillic, p-coumaric, and caffeic acids) and terpenes (i.e.a and b-pinene) with allelopathic documented effect were detected in the aqueous extracts and soil samples used in the analyses. We suggest that the allelopathic effect of C. ladanifer may influence the composition and structure of Mediterranean communities where the species is present, since it hinders the establishment of some sub-climacic species and may reduce the area occupied by numerous herbaceous species.

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Section: Seed Scarificationmentioning

confidence: 99%

Effect of allelopathic compounds produced by Cistus ladanifer on germination of 20 Mediterranean taxa

et al. 2005

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“…Physical dormancy imposed by a fairly impermeable seed coat has been widely described in the Leguminosae family (Tarrega et al, 1992;Pérez-García et al, 1995). This dormancy is often interrupted during its passage though the digestive tract of herbivores ( Jazen, 1982;Barnea et al, 1991;Gardener et al, 1993;Malo & Suarez, 1995).…”

Section: Introductionmentioning

confidence: 96%

Coronilla juncea is both a nutritive fodder shrub and useful in the rehabilitation of abandoned Mediterranean marginal farmland

Robles

Allegretti

Passera

2002

Journal of Arid Environments

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“…Reinforcement of wild populations using stored seed material may be a valuable tool for conserving endemic and threatened species (Schemske et al 1994;Pe´rez-Garcı´a et al 1995;Cerabolini et al 2004). On the other hand, restoration of alpine environments has been carried out in Europe and North America in recent decades (Brown and Johnston 1979;Urbanska and Schu¨tz 1986).…”

Section: Introductionmentioning

confidence: 99%

Seed germination of high mountain Mediterranean species: altitudinal, interpopulation and interannual variability

Giménez‐Benavides

Escudero

Pérez-García

2005

Ecological Research

163

128

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The germination response of 20 species from high altitude Mediterranean climates, most of them rare endemics, was studied. Our main goal was to model the germination response of a complete set of Iberian high mountain species. The effect of temperature and other parameters, such as spatial and temporal short gradients, on germination were also evaluated. Some seed features (mass and size) were also related to the germination response. Finally, we tested the effect of cold-wet stratification pretreatment when germination was low under natural conditions. Seeds were collected at four locations from 1,900 to 2,400 m a.s.l. in the Sierra de Guadarrama (Spanish Central Range) over two consecutive growing seasons (2001)(2002) and submitted to different temperatures and a constant photoperiod of 16 h light/8 h darkness. Most plants readily germinate without treatment, reaching an optimum at relatively high temperatures in contrast to lowland Mediterranean species. Seeds seem to be physiologically prepared for rapid germination even though these plants usually face very intense summer droughts after ripening and dispersal. Germination was also highly variable among altitudes, populations and years, but results were inconsistent among species. Such flexibility could be interpreted as an efficient survival strategy for species growing under unpredictable environments, such as the Mediterranean climate. Finally cold-wet stratification increased germination capacity in five of nine dormant species, as widely reported for many arctic, boreal and alpine species. In conclusion, high mountain Mediterranean species do not differ from alpine species except that a relatively high number of species are ready to germinate without any treatment.

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Germination Studies in Endemic Plant Species of the Iberian Peninsula

Cited by 42 publications

References 10 publications

Effect of allelopathic compounds produced by Cistus ladanifer on germination of 20 Mediterranean taxa

Effect of allelopathic compounds produced by Cistus ladanifer on germination of 20 Mediterranean taxa

Coronilla juncea is both a nutritive fodder shrub and useful in the rehabilitation of abandoned Mediterranean marginal farmland

Seed germination of high mountain Mediterranean species: altitudinal, interpopulation and interannual variability

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