We tested the influence of a synthetically-produced brassinosteroid compound (2α,3α,17βtrihydroxy-5α-androstan-6-one) on seed germination in Norway spruce, Scots pine, Douglas fir and English oak. Before germination, 400 seeds of each species were steeped in a brassinosteroid solution and then placed for germination in a growth chamber under (i) optimal humidity and (ii) temporary drought stress (except for oak). Drought stress significantly reduced the germination capacity and germination rate in the control treatments of Norway spruce, Scots pine and Douglas fir. Nonetheless, the application of brassinosteroid significantly reduced the drought-stress effects in seeds of Norway spruce and Scots pine. The drought-stressed Douglas fir did not respond positively to the brassinosteroid application. English oak was germinated only under the optimal humidity regime and no differences in germination were detected between the control and brassinosteroid-treated acorns.
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Kuneš I, Baláš M, Linda R, Gallo J, Nováková O (2016). Effects of brassinosteroid application on seed germination of Norway spruce, Scots pine, Douglas fir and English oak. iForest 10: 121-127. - doi: 10.3832/ifor1578-009
Academic Editor
Gianfranco Minotta
Paper history
Received: Jan 28, 2015
Accepted: Jun 05, 2016
First online: Oct 02, 2016
Publication Date: Feb 28, 2017
Publication Time: 3.97 months
© SISEF - The Italian Society of Silviculture and Forest Ecology 2016
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