Effect of smoke and heat on dormancy and germination of Asian spiderflower seeds

Articles in Press

Document Type : Research Paper

Authors

Department of Agronomy, Faculty of Crop Production, Gorgan University of Agricultural Sciences and Natural Resources. Gorgan. Iran.

Abstract

High temperatures and smoke resulting from the burning plant residues impact the behavior of weed seeds in the soil seed bank. Therefore, this research was conducted to investigate the effect of smoke from burning rapeseed residues on the dormancy and germination of Asian spider flower seeds. The study examined both fresh seeds and those that had been stored for 6 months In the first experiment, the germination of fresh and stored seeds was examined at temperatures ranging from 15 to 40 oC, both inlight and dark conditions. Second experiment involved pre-treating Asian spider flower seeds at high tempeartures 80, 100, 120, and 150 oC for 5 and 10 minutes. In the third experiment, the effect of smoke on germination of fresh and after-ripened seeds was studied using charred solution, smoke water, and aerosol smoke. The fresh seeds of Asian spider flower did not germinate at any temperature; but the germination of after-ripened seeds at 30 o C was 92%. Pre-treatment of after-ripened seeds with temperatures of 100, 120, and 150 °C caused complete inhibition of germination. Freshly harvested Asian spider flower seeds did not germinate under different treatments of charred solution, smoke water, and aerosol smoke.The results of the present study showed all smoke treatments had positive effects on seed germination of Asian spider flower. The positive effects of smoke treatments are in the following order: aerosol smoke>smoke water> charred solution.

Keywords

Iranian Journal of Plant Protection Science

Articles in Press, Accepted Manuscript
Available Online from 03 July 2024

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History

  • Receive Date: 04 March 2024
  • Revise Date: 08 June 2024
  • Accept Date: 03 July 2024

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