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- Title
EFFECT OF LIGHT ON THE GERMINATION OF FOREST TREE SEEDS.
- Authors
Sarvas, Risto
- Abstract
In several earlier investigations it has been found that light affects the germination of forest tree seeds. As recent developments in lighting equipment and light measuring devices offer the possibility of a more conclusive treatment of the question than before, the author has carried out tests with the seeds of Pinus silvestris, Picea excelsa, Betula verrucosa and B. pubescens. The tests show that the seed of the above mentioned tree species germinates much more quickly in light than in darkness. With the seed of Picea excelsa, Betula verrucosa and B. pubescens, however, the same final germination result was attained in darkness and in light. Pinus silvestris seed, on the other hand, yielded a considerably poorer final germination result in darkness than in light. On the basis of the results arrived at the author concludes that care must be taken in germination tests to ensure that germinating seeds receive sufficient light, and that it is not advisable to cover seed, at least not Pinus silvestris seed, in sprouting tests and only very lightly if at all in sowing forest.
- Subjects
TREE seedlings; GERMINATION; PLANT physiology; SPROUTS; SEEDLINGS; SOWING
- Publication
Oikos, 1950, Vol 2, Issue 1, p109
- ISSN
0030-1299
- Publication type
Article
- DOI
10.2307/3564665