Anatomical and Histochemical Changes of Norway Spruce Buds Induced by Simulated Acid Rain
作者： J. Soukupova , J. Albrechtova , H. Svobodova , J. Opatrna
关键词: Acid rain 、 Dormancy 、 Annual growth cycle of grapevines 、 Picea abies 、 Primordium 、 Biology 、 Botany 、 Meristem 、 Esterase 、 Shoot 、 Plant science 、 Horticulture
摘要: The study was focused on changes of anatomical and histochemical parameters buds 4-year-old Norway spruce (Picea abies L. Karst) trees subjected to simulated acid rain (SAR). Solutions pH 2.9 3.9 were applied by spraying shoot and/or watering for two years. No macroscopic or needles observed in connection with SAR application the only induced change 2-week earlier onset bud break all treated variants compared control. Two-year treatment caused decrease number leaf primordia increase living scales dormant while these remained unchanged control buds. Treatments solution flatness apical meristem during vegetative season. Increased activity non-specific esterase occurred dormancy enhanced accumulation phenolic compounds detected at beginning growth. Changes tissues mainly shoots can thus be qualified as primary damage.
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