Abstract
A bundle of optical fibres and a photometer were used to measure light transmission through bud scales of Norway spruce [Picea abies (L.) Karst.] and Scots pine (Pinus silvestris L.). Percentage transmission increases with wavelength from none below 480 nm to 3% the far-red. Transmission of all wavebands measured was lowest in late summer and winter and highest in the autumn and spring. For most of the year in pine, and only from July to September in spruce, there is a depression of red light (660–670 nm) transmission. This affects the ratio of 660/730 nm light penetrating the apical domes. This ratio is lowest in July and August, at the time of initiation of female strobili. The seasonal variation in transmission of light by bud scales is discussed in relation to the possible consequences for the control of flowering.
This is a preview of subscription content, log in via an institution to check access.
References
Chalupka, W. (1975) Wplyw czynników klimatycznych na urodzaj szyszek świerka pospolitego (Picea abies L. Karst.) w Polsce. Arbor. Kórnickie 20, 213–225
Chaŀupka, W., Giertych, M. (1979) Possible use of optical fibres in studies on the physiology of bud development in woody plants. Second National Symposium on Optical fibres and their Applications, Jabŀonna, Poland 13–15 Feb. p. 71. PAN Electronics and Telecommunication Committee, Warsaw, Poland
Fober, H. (1976) Relation between climatic factors and Scots pine (Pinus silvestris L.) cone crops in Poland. Arbor. Kórnickie 21, 367–374
Giertych, M., Królikowski, Z. (1978) Importance of bud insolation of female flower induction in Pinus silvestris L. Arbor. Kórnickie 23, 161–169
Holmes, M.G., Fukshansky, L. (1979) Phytochrome photoequilibria in green leaves under polychromatic radiation: a theoretical approch. Plant Cell Environ. 2, 59–65
Holmes, M.G., Wagner, E. (1980) A re-evaluation of phytochrome involvement in time measurement in plants. J. Theor. Biol. 83, 255–265
Kaniewski, K., Kucewicz, O., Ważyńska Z. (1971) Badania nad budową anatomiczną i rozwojem ŀusek pączków świerka pospolitego (Picea abies Karst.) Rocznik Dendrologiczny 25, 43–61
Kaniewski, K., Wazyńska, Z., Kucewicz, O. (1972) Badania nad budową antomiczną i rozwojem pączków sosny zwyczajnej (Pinus silvestris L.). Rocznik Dendrologiczny 26, 41–61
May, P. (1965) Reducing inflorescence, formation by shading individual sultana buds. Aust. J. Biol. Sci. 18, 463–473
Pukacki, P. (1980) Temperature of Norway spruce and Scots pine buds. Arbor. Kórnickie 25, 277–287
Pukacki, P., Giertych, M., Chaŀupka, W. (1980) Light filtering functions of bud scales in woody plants. Planta 150, 132–133
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Pukacki, P., Giertych, M. Seasonal changes in light transmission by bud scales of spruce and pine. Planta 154, 381–383 (1982). https://doi.org/10.1007/BF00393918
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF00393918