PJB-2020-37
SCREENING OF VOLATILES OF 124 SELECTED AROMATIC PLANTS OF PAKISTAN FOR ALLELOPATHIC POTENTIAL
Sajida
Abstract
Introduction: Crop productivity is substantially reducing due to climate change interference in agro ecosystem due to which global temperature is rising and rainfall patterns are changing and ultimately impacting the crop yield. Weeds are considered as one of the main threats to the agro ecosystem. Objective: Present study characterized the thorough screening of allelopathic potential of 124 aromatic plants of Pakistan by Dish pack method. The objective is to explore the presence of volatiles in top aromatic plant species. Methods: Leaves of aromatic plant samples belonging to100 genera and 50 families were collected from different regions of Pakistan and evaluated for their allelopathic potential by using dish pack method. Statistical analysis data described the presence of allelochemicals in 124 aromatic plant species on lettuce sativa L growth in lexes of hypocotyl and radical length. Results: Top three aromatic plant species that showed maximum growth inhibition activity were Raphanus sativus (Brassicaceae), Mentha royleana (Lamiaceae) and Cymobopogan (Poaceae).Moreover, the presented results also showed minimum growth inhibition or maximum growth stimulation by Berberis vulgaris (Berberidaceae) followed by Olea europaea (Oleaceae) and Elettaria cardamomum (Zingiberaceae). Conclusions: Selected plants of Pakistan may have allelochemicals which can be used for the development of natural herbicides for sustainable agriculture. Results of present study can also be used as benchmark data for future research for the identification and quantification of useful and harmful allelochemicals present in nature and for the production of new and useful bioactive compounds from the natural resources.
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