ORIGINAL RESEARCH
How Environmental Signals Affect Frequency
of Three-Needle Dwarf Shoots on Pinus mugo
Adam Boratyński1, Alfred Dubicki2, Grzegorz Iszkuło1,3, Anna K. Jasińska1,
Krystyna Boratyńska1, Mirosława Piórkowska4, Katarzyna Marcysiak4
1Institute of Dendrology, Polish Academy of Sciences, Parkowa 5, 62-035 Kórnik, Poland
2Wroclaw Division, Institute of Meteorology and Water Management, Parkowa 30, 51-616 Wrocław, Poland
3Department of Biology, University of Zielona Góra, Szafrana 1, 65-516 Zielona Góra, Poland
4Department of Botany, Kazimierz Wielki University, Ossolinski Avenue 12, 85-064 Bydgoszcz, Poland
2Wroclaw Division, Institute of Meteorology and Water Management, Parkowa 30, 51-616 Wrocław, Poland
3Department of Biology, University of Zielona Góra, Szafrana 1, 65-516 Zielona Góra, Poland
4Department of Botany, Kazimierz Wielki University, Ossolinski Avenue 12, 85-064 Bydgoszcz, Poland
Pol. J. Environ. Stud. 2011;20(1):45-52
KEYWORDS
ABSTRACT
The main aim of our study was to verify the influence of climatic factors on the formation of abnormal
3-needle dwarf shoots in the two-needle Pinus mugo. Twenty individuals of the species, which had at least one
abnormal brachyblast in 2002, have been studied in the Tatra Mountains (Carpathians) and an additional 20 in
the Giant Mountains (Sudetes) over a period of 11 years. The number of atypical dwarf shoots in both populations
in particular years was correlated to temperatures during the period of initiation and determination of
apical meristems. Three-needle dwarf shoots appeared to occur every year in most of the studied individuals.
It also showed positive correlation with (1) average, (2) absolute maximum, and (3) minimum average monthly
temperatures of late autumn two years, and early winter one year, before emergence from the bud.
| eISSN: | 2083-5906 |
| ISSN: | 1230-1485 |
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