PJB-2017-123
EVALUATION OF PHYTODIVERSITY FOR ALLELOPATHIC ACTIVITY AND APPLICATION TO MINIMIZE CLIMATE CHANGE IMPACT: JAPANESE MEDICINAL PLANTS
MUHAMMAD IBRAR SHINWARI, OSAMU IIDA, MARYUM IBRAR SHINWARI AND YOSHIHARU FUJII
Abstract
Climate change impact is ready to interfere in agro-ecosystems. Improvement of adaptations of crops to forthcoming climatic changes must be focused in research. In the present study, leaf liter of 160 medicinal plant samples (156 species) belonging to 134 genera and 74 families were collected from Research Center for Medicinal Plant Resources, Tanegashima, Japan and subjected to evaluation of their allelopathic effects using the Sandwich method. Lettuce (Lactuca sativa L.) was used as a test plant material in the bioassay because of its reliability for germination. Top ten medicinal plant species found with maximum inhibition activity were Melia azedarach (Meliaceae) followed by Tylophora tanakae (Ascepiadaceae), Cinchona sp. (Rubiaceae), Flueggea virosa (Phyllanthaceae), Hibiscus acetosella (Malvaceae), Justicia procumbens (Acanthaceae), Terminalia chebula (Combretaceae), Hibiscus syriacus (Malvaceae), Lycium chinense (Solanaceae) and Elaeocarpus japonicas (Elaeocarpaceae). Moreover, the presented results also showed minimum growth inhibition or maximum growth stimulation by Ligustrum japonicum (Oleaceae) followed by Vitex rotundifolia (Lamiaceae) and Alpnia intermedia (Zingiberaceae).These results may be utilized as benchmark information for further research on the elucidation of chemicals involved in the allelopathy in nature. The information obtained could also be helpful in the development of new and potent bioactive chemicals from natural products
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