Add time:09/09/2019         Source:sciencedirect.com

SummaryThe effect of dalapon (2,2-dichloropropionic acid, sodium salt) in different concentrations on the soluble protein content and enzymatic activity of proteases and acid phosphatases in the needles of spruce seedlings treated with this herbicide before bud development and during bud formation was investigated.The following results have been obtained:1.Dalapon in all concentration tested increased soluble protein content in needles of spruce seedlings, regardless of the plant growth stage.2.No effect of dalapon on total nitrogen content could be observed.3.Dalapon applied on seedlings during bud formation retarded the proteolytic activity of enzymes in the needles. In needles treated with the herbicide before bud development a stimulation of protease activity was observed (measurements were made in newly formed needles).4.The activity of acid phosphatases can be stimulated or retarded depending on dalapon concentration, plant growth stage, and time of exposure.4.Dalapon disturbes the metabolism in newly formed plant organs.

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