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Copyright
© 2001, CAB International |
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BA: |
19970609870
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ET: |
Comparative
ecophysiology of seed germination strategies in the seven pine species
naturally growing in Greece. |
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AU: |
Skordilis,
A.; Thanos, C. A. |
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ED: |
Ellis,
R. H.; Black, M.; Murdoch, A. J.; Hong, T. D. |
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AA: |
Department
of Botany, University of Athens, Athens 15784, Greece. |
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SO: |
Basic
and applied aspects of seed biology. Proceedings of the Fifth
International Workshop on Seeds, held at Reading, UK on 10-15 December
1995., 1997, pp.623-632, 24 ref. |
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AB: |
Seven
out of the eleven European pine species grow naturally in Greece. Pinus
halepensis , P.brutia and P. pinea are low-altitude,
typical Mediterranean species, while the Greek populations of P.
nigra , P. heldreichii , P. sylvestris and P.
peuce grow in high altitudes and are located at the southern limits of
their natural world distributions. Seed germination data concerning
temperature dependence as well as light and/or stratification requirements
are presented and discussed in relation to the characteristics of the
individual species. Fire resilient P. halepensis and P.
brutia are characterized by quite low germination in the dark,
throughout their optimal temperature range (10-20 deg C); in addition,
their germination is photosensitive (white-light promoted and far-red
inhibited). Prolonged stratification is always beneficial to P.
brutia but detrimental to P. halepensis seeds. Germination of
P. pinea seeds is also slow but indifferent to light conditions and
restricted to a very narrow temperature range, around 20 deg C. P.
nigra seeds are fast germinating over a wide temperature range and
rather indifferent to light. Germination of the deeply dormant P.
heldreichii seeds as well as of the less dormant ones of P.
sylvestris requires light and/or stratification. By combining
germination data for each species with the particular seasons of seed
dispersal and the climatic conditions of the respective habitats, timing
schedules of seed germination and subsequent seedling emergence in nature
are proposed. |
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DE: |
forest
trees; seed germination; temperature; altitude; light; stratification;
seed treatment; seed dormancy; seed dispersal; seasons; temporal
variation; climatic factors; environmental factors; seeds; plant
physiology; environment; climate; pines |
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OD: |
Pinus
halepensis; Pinus brutia; Pinus pinea; Pinus nigra; Pinus heldreichii;
Pinus sylvestris; Pinus peuce; Pinus |
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GL: |
Greece
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ID: |
Basic
and applied aspects of seed biology |
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UP: |
Pinus;
Pinaceae; Pinopsida; gymnosperms; Spermatophyta; plants; Mediterranean
Region; Developed Countries; European Union Countries; OECD Countries;
Southern Europe; Europe |
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PU: |
Kluwer
Academic Publishers, Dordrecht, Netherlands |
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IS: |
0-7923-4363-8
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CO: |
Basic
and applied aspects of seed biology. Proceedings of the Fifth
International Workshop on Seeds, held at Reading, UK on 10-15 December
1995. |
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CC: |
KK100; |
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NB: |
Current
Plant Science and Biotechnology in Agriculture 30
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LA: |
English
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DT: |
Conference
paper |
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SC: |
Forestry
Abstracts; Seed Abstracts |