0172268 - UEB-Q 20023053 RIV CZ eng J - Journal Article
Matschke, J. - Macháčková, Ivana
Changes in the Content of Indole-3-Acetic Acid and Cytokinins in Spruce, Fir and Oak Trees after Herbicide Treatment.
Biologia Plantarum. Roč. 45, č. 3 (2002), s. 375-382. ISSN 0006-3134. E-ISSN 1573-8264
R&D Projects: GA ČR GA206/00/1354; GA MŠMT LN00A081
Institutional research plan: CEZ:AV0Z5038910
Keywords : Abies nordmanniana * anatomical changes * forest decline
Subject RIV: EF - Botanics
Impact factor: 0.583, year: 2002

Treatment of spruce, fir and oak trees with herbicides, which may be one of the forest damage inducing agents, caused pronounced changes in the contents and distribution of indole-3-acetic acid (IAA) and cytokinins (CKs) one year after treatment, i.e. at the time of the first microscopically visible damage in treated trees. In Picea pungens IAA content increased in the terminal buds by about 105 % and in the apical buds of the first order branches by 220 %. The same was true for young sprouts of Abies nordmanniana, while in leaves of oak trees IAA content was decreased by 15 % after glyphosate treatment and by 30 % after 2,4-dichlorophenoxyacetic acid (2,4-D) treatment. Another striking feature was a significantly decreased content of IAA in the lower parts of roots in Picea pungens (50 % of the control), which is accompanied by an increase in IAA content in the middle part of the roots (130 %). On the other hand, the IAA content of both sprouts and roots of A. nordmanniana was significantly increased after herbicide treatment.
Permanent Link: http://hdl.handle.net/11104/0069307