Dr. R.M.C.S. Rathnayake

Prof. R.M.C.S. RatnayakeProfessor

PhD (HK), MPhil (Peradeniya), BSc (Peradeniya), Dip Agric (Kundasale)

University Location : Room No. B1 311
email: ratna@kln.ac.lk
Telephone: +94-11-2903222 / + 94-11-2914480
Fax: + 94-11-2914480
Google Scholar | Research Gate

ORCID ID

Research Interests

Reproductive biology and pollination ecology of Angiosperms
Plant ecology
Organic farming

Selected Publications

S.G.M.S.D. Senanayaka, Gayathri Senanayake and R.M.C.S. Ratnayake. 2023. Propagation and management of ornamental and commercial cacti– a review, The journal of horticultural science and biotechnology, 1-21. https://doi.org/10.1080/14620316.2023.2298987

Dayarathne, M C, Thambugala, K M, Daranagama, D A, Mridha, A U, Dissanayake, A J, Dissanayake, L S, Maharachchikumbura, S S N, Rathnayake, R M C S , Hongsanan S L S (2023). Global Challenges in Identifying Plant Pathogenic Fungi: An Overview with Suggestions for the Way Forward. 2023. Chiang Mai Journal of Science, 50, 4, 1-17.
Perera, K.R.S., Ratnayake, R.M.C.S., Epa, U.P.K. (2023). Allelopathic effects of the invasive plant Wedelia (Sphagneticola trilobata L.) aqueous extract on common beans (Phaseolus vulgaris L.), Journal of experimental Biology and Agricultural Science, 11(3),542 – 549
Gunarathne, V. A, Somasiri I.V., Herath H., Ratnayake R.M.C.S., Senanayake S.P. (2023). Propagation of Antidesma alexiteria and Syzygium caryophyllatum, two underexploited fruit plants in Sri Lanka: Effect of cutting types, potting media and auxin application. Dendrobiology, 89, 65–76.
Harasgama, H D R V L. Wijewickrama, T, Attanayake, A, Attanayake, R N Ratnayake, R M C S. (2023). Rediscovery, identity, and conservation strategies of a critically endangered endemic plant, Hedyotis quinquinervia Thwaites (Rubiaceae) in Sri Lanka. Journal of National Science. Foundation Sri Lanka 2023 51 (3): 491- 503.
de Silva, R,. Herath, H, Sena Ratnayake, Attanayake, R, Senanayake, P. (2023). Pollen biology and reproductive ecology of selected paleotropical Dendrobiums and its commercial hybrids. Journal of Pollination Ecology, 33, 64-79.
K M K Patabendige, M D Amarasinghe, R M C S Ratnayake & D D G L Dahanayaka 2023. Impact of climate and irrigation practices on hydrological aspects of Bundala wetlands in Sri Lanka. Irrigation and Drainage, 1, 1-10.
Rumalie de Silva, Harshini Herath, Sena Ratnayake, Renuka Attanayake, Priyanganie Senanayake. 2023. Pollen biology and reproductive ecology of selected paleotropical Dendrobiums and its commercial hybrids. Journal of Pollination Ecology, 33 (5), 64-79.

M. A. Dias and R M C S Ratnayake (2021) Variation in dichogamy and myophily in two dioecious Bridelia species (Phyllanthaceae)” Australian Journal of Botany, 69(5), 301-309.
R.H.A Ranasinghe, BTSDP Kannangara & RMCS Ratnayake (2021). Hydrolysis of fish waste by protease enzymes of the fruit wastes of Ananas comosus and Carica papaya for the formulation of liquid fertilizers, International Journal of Recycling Organic Waste in Agriculture 10(2):129-143.
Ranasinghe, R.H.A.A., Ratnayake, R.M.C.S. and Kannangara, B.T.S.D.P., 2021. Effects of Foliar and Soil-Applied Liquid Organic Fertilizers on the Growth of Basella alba L. and Centella asiatica L.. Journal of Agricultural Sciences – Sri Lanka, 16(3), 393–409. 4.
Jayasundara, JMNP, Jayasekara, LR and Ratnayake, RMCS. 2016. Liquid organic fertilizers for growth enhancement of Ablemoschus esculanta (L) and Alternanthera sessilis (L.) DC. An international journal of Tropical plant research, 3(2), 334.340.
Ranasinghe RHAA, Jayasekera LR, Kannangara SDP & Ratnayake RMCS (2019) Suitability of selected Sri Lankan weeds for the formulation of organic liquid fertilizers. Tropical Plant Research 6(2): 214– 225
Ratnayake, R. M. C. S., I. A. U. N. Gunatilleke, D. S. A. Wijesundara & R. M. K. Saunders (2007). Pollination ecology and breeding system of Xylopia championii (Annonaceae): curculionid beetle pollination promoted by floral scents and elevated floral temperatures. International Journal of Plant Sciences 168(9) 1255-1268 (PDF)
Ratnayake, R. M. C. S., I. A. U. N. Gunatilleke, D. S. A. Wijesundara & R. M. K. Saunders (2006). Reproductive biology of two sympatric species of Polyalthia(Annonaceae) in Sri Lanka. I. Pollination by curculionid beetles. International Journal of Plant Sciences 167(3): 483–493. (PDF)
Ratnayake, R. M. C. S., I. A. U. N. Gunatilleke, D. S. A. Wijesundara & R. M. K. Saunders (2006). Reproductive biology of two sympatric species of Polyalthia(Annonaceae) in Sri Lanka. II. Breeding systems and Population genetic structure. International Journal of Plant Sciences 167(3): 495-502. (PDF)
M. K. Saunders, S. Ratnayake, N. Gunatilleke, S. Wijesundara (2005). Phenology, pollination ecology and breeding system of Polyalthia korintiand, P. coffeoides (Annonaceae). 17-23 July 2005. 17th International Botanical Congress, Vienna, Austria. 282.
M. C. S. Ratnayake, I. A. U. N. Gunatilleke, D. S. A. Wijesundara, and R. M. K. Saunders (2004). Pollination of Polyalthia korinti, P. coffeoidesand Xylopia championii (Annonaceae) by Endaeus species (Coleoptera: Curculionidae) in wet tropical forests of Sri Lanka. 7-12 Aug 2004, 12th Symposium insect-plant relationships, Berlin, Germany, 151.
M. C. S. Ratnayake, I. A. U. N. Gunatilleke, D. S. A. Wijesundara, and R. M. K. Saunders (2004). Floral reproductive biology of Xylopia championiiHook. F. & Thoms. (Annonaceae) (2004). 20-24 Sept 2004. 6th International Flora Malesiana Symposium Los Banos Philippine 83.
Ratnayake, R.M.C.S., Gunatilleke, I.A.U.N. and Gunatilleke, C.V.S. . (1997). Comparison of Floristic Diversity of Four Woodland Types in the Upper Hantana Campus land. Proceedings of the Third Annual Forestry Symposium of Department of Forestry and Environmental Science, University of Sri Jayawardhanepura. 31.

On Going Research

Teaching