Affiliation: | 1.Department of Botany, Faculty of Science, University of Jaffna, Jaffna, Sri Lanka ;2.Department of Agricultural Biology, Faculty of Agriculture, University of Peradeniya, Peradeniya, Sri Lanka ;3.School of Agriculture, Policy and Development, University of Reading, Reading, UK ;4.Plant Protection Board of Study, Postgraduate Institute of Agriculture, University of Peradeniya, Peradeniya, Sri Lanka ; |