Document Type : Original Article
Authors
1
Professor, Department of Plant Production and Genetics, Faculty of Agriculture and Natural Resources, University of Mohaghegh Ardabili, Ardabil, Iran
2
MSc. graduate Department of Plant Production and Genetics, Faculty of Agriculture and Natural Resources, University of Mohaghegh Ardabili, Ardabil, Iran
3
Ph.D. graduate, Department of Plant Production and Genetics, Faculty of Agriculture and Natural Resources, University of Mohaghegh Ardabili, Ardabil, Iran
4
Associate Professor. Department of Plant Production and Genetics, Faculty of Agriculture and Natural Resources, University of Mohaghegh Ardabili, Ardabil, Iran
Abstract
In order to investigate the effect of pure Russian knapweed extract formulated with chitosan on the germination of pigweed (Amaranthus retroflexus), an experiment was conducted in 2016 in a factorial format based on a completely randomized design with three replications. The experimental treatments included the first factor of pure extract Russian knapweed and its formulated extract with chitosan and the second factor had seven concentrations (zero (Distilled water), 0.625, 1.25, 2.5, 5, 10, and 20% ). The results showed that the interaction effects of the type of extract and different concentrations in the extract formulated with chitosan had the highest inhibition on the germination of the pigweed. Also, the highest plumule length, radicle length, and plumule fresh weight and radicle fresh weight were obtained from the treatment of 0.625% of pure extract and the lowest from the treatments of 5, 10, and 20% of formulated Russian knapweed extract with chitosan. The highest inhibition of plumule and radicle dry weight from concentrations of 5, 10, and 20% pure and formulated extract of Russian knapweed with chitosan (100% control compared to the distilled water), and the lowest inhibition was obtained from the concentration of 0.625% of the formulated extract with chitosan.
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