Mycoherbicidal potential of Alternaria alternata ITCC4896 for the control of Parthenium hysterophorus
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Department of Biotechnology and Environmental Sciences, Thapar Univ ersity Patiala, Punjab 147004 India
Sanjai Saxena
Department of Biotechnology and Environmental Sciences, Thapar University (formerly Thapar Institute of Engineering and Technology (Deemed University), Patiala, Punjab 147004 INDIA
Journal of Plant Protection Research 2007;47(2):213–218
Mycoherbicides are special biotechnology products which contain fungi or fungal metabolites as nonchemical alternatives thereby reducing the input of harmful chemicals to control noxious weeds. The present communication emphasizes on the potential of an indigenous isolate of Alternaria alternata ITCC 4896 as a mycoherbicide for the global weed – Parthenium hysterophorus. Of the various spore concentrations tested by in vitro Detached Leaf Bioassay, 1x10 6 spores/ml was the most effective inducing 89.2% leaf area damage on the 7th day and was further tested by Whole Plant Bioassay. Both in vitro Detached Leaf Bioassay and Whole Plant Bioassay exhibited a similar trend in disease development showing 50% damage at 96 hours post treatment. However, 100% mortality was observed in the Whole Plant Bioassay on the 7th day. This is the very first report on the bioweedicidal potential of A. alternata ITCC 4896 (LC#508) for use as a mycoherbicide for P. hysterophorus
The authors have declared that no conflict of interests exist.
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