Dr. (Mrs.) Disna Ratnasekera

BSc, MSc, PhD

Senior Lecturer in Agricultural Biology
Dept of Agriculture Biology
Faculty of Agriculture, University of Ruhuna, Sri Lanka


Phone

:

+94 41 229 2200

+94 71 823 2808 (mobile)

Fax

:

+94 41 229 2384

E-mail

:

disnar@agbio.ruh.ac.lk

disnaratnasekera@gmail.com

FULL NAME

Wanni Arachchilage Disna Ratnasekera

 

DATE OF BIRTH

Born May 20, 1967

 

NATIONALITY

Sri Lankan

 

HOME ADDRESS

88/1D, Kuruppumulla,Panadura, Sri Lanka.

 

OFFICE ADDRESS

Department of Agricultural Biology, Faculty of Agriculture, University of Ruhuna, Mapalana, Kamburupitiya, Sri Lanka.

 

TELEPHONE

+94602412599(home)

+94718232808(mobile)

 

E-MAIL

disnar@agbio.ruh.ac

disnaratnasekera@gmail.com

 

HIGHER EDUCATION

  • PhD China Agricultural University, Beijing, China. -Major: Plant Physiology, Molecular Biology and Biochemistry. Title: Evidence for involvement of an Arabidopsis CDPK gene, WDSS1 in response to drought stress .(2004-2007)

  • Proficiency in Chinese Language, Beijing Language and Culture University, Beijing, China. (2003-2004 )

  • MSc in Agriculture, Post Graduate Institute of Agriculture, University of Peradeniya, Sri Lanka. (1999-2002)

  • BSc in Agriculture, Second Class (Upper Division) Honors. Faculty of Agriculture, University of Ruhuna, Sri Lanka. (1990-1994)

 

MAJOR RESEARCH INTERESTS

  • Investigations of plant genetic resources for conservation and plant improvement.

  • Investigations on the effect of biotic and abiotic stress responses of plant species.

  • Use of in vitro techniques as a tool in plant physiology and plant breeding for plant improvement.

  • Conservation and domestication of crop wild relatives.

 

COURSES ATTENDED

  • Certificate in Teaching in Higher Education. Staff Development Centre, University of Colombo, Sri Lanka (2002).

TECHNICAL TRAINERS AWARD IN AGRICULTURAL EDUCATION

Overseas:

  • Training on Integrated Pest Management from 28th April to 4th July 2003, IAC, Wageningen, The Netherlands. (IPM Information Systems-2 weeks, Participatory IPM Extension- 2 weeks, IPM Technology- 4 weeks and Role of Pesticides in IPM- 2 weeks).

  • An advanced training program on Arabidopsis Research, China Agricultural University, Beijing, China (from 20th Sep to 20th Nov. 2007).

  • International course on Plant genetic resources and seeds: policies, conservation and use. 01-19 November 2010, organized by Wageningen UR Center and MS Swaminathan Research Foundation, India.

  • International Conference on Eliminating Hunger and Poverty: Priorities in Global Agricultural Research and Development Agenda in an Era of Climate Change and rising food prices in Chennai from 7-9 August 2010, Organized by MS Swaminathan Research Foundation, India.

Local:

  • National Training Program on genetics and Molecular Breeding to produce perennial crop varieties. From 9-13 Dec 2002, Department of Export Agriculture in collaboration with IAEA, Vienna, Austria.

  • Workshop on Research Supervision in the 21st Century on 5th Sep. 2008, organized by British Council with the University of Durham UK, UGC Sri Lanka and IRQUE Sri Lanka.

  • Short Course on Molecular Plant Breeding in 18th–19th Nov. 2008, Agricultural Biotechnology Centre, University of Peradeniya.

  • Workshop on Biosafety, Risk Assessment and Management of Genetically Modified organisms, Food Feed and processed Products. 7th to 9th September 2010, organized by The ministry of Environment, Sri Lanka.

 

PRESENT EMPLOYMENT

 

  • Senior Lecturer, Department of Agric. Biology, Faculty of Agriculture, University of Ruhuna, Mapalana, Kamburupitiya. Sri Lanka, (From: 4th January 1999 up to date) Duties: Teaching and Research in Plant Protection, Molecular Biology and Plant Physiology.

 

WORK EXPERIENCE

 

Teaching

  • Temporary Lecturer in Department of Export Agriculture, Faculty of Agricultural Sciences, Sabaragamuwa University of Sri Lanka. 1997 December to 1998 December.Duties: Teaching and Research in Entomology, Plant Protection, and Plant Physiology.

  • Temporary Demonstrator in Agric. Biology, Faculty of Agriculture, University of Ruhuna from 1996 July to 1997.April. Duties: Teaching and Research in Plant Protections.

  • Temporary Assistant Lecturer in Agric. Chemistry, Faculty of Agriculture, University of Ruhuna from 17 April 1995-1996. Duties: Teaching and Research in Food Science and Technology.

 

Research

 

  • Research Assistant in Plant Protection, Faculty of Agriculture, University of Ruhuna from 1997 July to December. Supervisor Prof. Rohan Rajapakse.

  • Research Assistant in Crop Protection, Horticultural Crop Research and Development Institute, Gannoruwa, Peradeniya from 1996 May to 1996 July, Supervisor Dr. C. Kudagamage, Director (HORDI). Duties: Research in Bio Control and IPM programs.

  • Six months research in Institute of Technology and Industry (ITI) Colombo, Sri Lanka on "Some studies done on pickling of Baby Corn" Supervisor Dr. N. Ediriweera, Head, Agro and Food Technology Division, ITI, Colombo.

 

SUPERVISION OF RESEARCH STUDENTS

  • Number of undergraduate students supervised- Completed 07, On going 04

  • Number of postgraduate students supervised - M.Phil. – On going 04

 

PROFESSIONAL MEMBERSHIPS

  • 2002 onward Life member, Sri Lanka Association for the Advancement of Science (SLAAS).

  • Life member of Plant Protection Association of Sri Lanka from 2002.

 

 

RESEARCH PUBLICATIONS

 

Zou, J.J, Wei, F.J., Wang, C., Wu, J.J., Ratnasekera, D., Liu, W.X., Wu, W.H. 2010. Arabidopsis calcium-dependent protein kinase CPK10 functions in abscisic acid- and Ca2+-mediated stomatal regulation in response to drought stress. P MID: 20805328 (J of Plant Physiology, online publication).

 

Nayanathara, KHG and Disna Ratnasekera 2010. Efficacy of Cinnamon and Citronella oil vapours in the control of Callosobruchus chinensis L. in bulk stored green gram. J. Ent. Res. 34(3):201-211.

 

Madurangi, S A P., Ratnasekera, D., Hemachandra, P V., Senanayake, S G J N. 2010. Evaluation of Brown planthopper: Nilaparvata lugens (stal) resistance in Oryza nivara (wild rice) accessions found in Sri Lanka, Proceedings of the 15th International Forestry and Environmental Symposium, University of Sri Jayawardhanapura. pp 172-175.

 

Madurangi, S A P., Ratnasekera, D., Hemachandra, P V., Senanayake, S G J N. 2010. Morphological characterization of Oryza nivara (wild rice) accessions collected from Sri Lanka. Proceedings of the 1st International Symposium, Faculty of Agriculture, University of Ruhuna. pp 23.

 

S.A.P. Madurangi, W.L.G. Samarasinghe, S.G.J.N. Senanayake, P.V. Hemachandra, Disna Ratnasekera 2010. Brown Plant Hopper Nilaparvata lugens (Stal), resistance in Oryza nivara and Oryza eichingeri derived lines in Sri Lanka JNSF, Sri Lanka (Accepted as a research article).

 

UIP Perera, AP Bentota, Disna Ratnasekera and SGJN Senanayake 2010. Heterosis and Genetic effects of some yield related characteristics of rice. Tropical Agricultural Research & Extension, Sri Lanka (submitted).

 

Disna Ratnasekera and Rohan Rajapakse 2009. Repellent properties of plant oil vapours on pulse beetle (Callasobruchus maculatus L.) (Coleoptera: Bruchidae) in stored Green gram (Vigna radiata Walp.) Tropical Agricultural Research & Extension, Sri Lanka,12(1).

 

S.D.P. Srimalee, Disna Ratnasekera, A.P. Bentota, S.G.J.N. Senanayake 2009. Callus induction ability of selected genotypes in indica rice through anther culture. Proceedings of the 6th Academic Sessions of the University of Ruhuna.

 

RHS Rajapakse and Disna Ratnasekera 2009. Pesticidal potential of some selected tropical plant extracts against Callosobruchus maculates (F) and Callosobruches chinensis (L) (Coleptera: Bruchidae). Tropical Agricultural Research and Extension, Sri Lanka,11.

 

W.A.C. Ruwan, Disna Ratnasekera, L. Hettiarachchi and S.D.P. Srimalee 2009. Suitable dormancy breaking method for selected rice varieties. Proceedings of the 2nd National Symposium, University of Ruhuna.

 

SAP Madurangi, G Samarasinghe, SGJN Senanayake, PV Hemachandra and Disna Ratnasekera, 2008. Investigation of Brown Plant Hopper resistance in Oryza nivara and Oryza eichinigeri derived lines. Proceedings of the 1st National Symposium, University of Ruhuna.

 

MGDK Warnakulasooriya, H Fonseka, SGJN Senanayake and Disna Ratnasekera, 2008. Effect of extended pollination time on fruit set and seed development and storage temperature on viability and storability of pollen of egg plant (Solanum melongena L.) Proceedings of the National Symposium, University of Ruhuna.

 

Rohan Rajapakse and Disna Ratnasekera, 2007. The management of the major insect pests Bactocera cucurbitae (Diptera: Tephritidae) and Aulacaphora spp. ( Coleoptera: Scarabaeidae) in Cucurbits in Southern Sri Lanka under three intensive systems: Integrated, Chemical and Organic Agriculture. Proc. IIIrd IS on Cucurbits, Acta Hort. 731 ISHS, Australia.

 

Ratnasekera Disna, Amani Mannakkara, 2002. Effect of leaf pruning and bunch covering on yield and transport of calcium to the bunch of banana CV Mysore. (Embul banana- AAB) SLAAS 58th annual sessions.

 

R.H.S. Rajapakse, H.L. de Z. Rajapakse and Disna Ratnasekera 2002. Effect of Botanicals on Oviposition, Hatchability and Mortality of Callosobruchus maculatus L. (Bruchidae: Coleoptera) EntOmon, Kerala, India. 27 (1).

 

Kudagamage, C. Rajapakse, H.L. de Z, R.H.S. Rajapakse and Disna Ratnasekera, 2001. The population dynamics and insecticidal control of three hoppers Amritodus brevistylus, Idioscopus niveosparus and Idioscopus clypealis in mango. J. Ent. Res.25 (2): 121-125.

 

Fernando, G.A.W.N., Rajapakse R.H.S., and Disna Ratnasekera 2000. The oviposition habit and chemical control of root and stem borer Plocaederus ferrugineus L. (Coleoptera: cerambycidae) in cashew in Sri Lanka. J. Trop. Agric.Kerala, India.

 

Ratnasekara Disna, G.A.W.N. Fernando and Rohan H.S. Rajapakse 1999. Preliminary observations on identification and control of some important insect pests on cashew. SLAAS 55th annual sessions.

 

R.H.S. Rajapakse, H.K.C. Damayanthie, H.L. de Z Rajapakse and Disna Ratnaekera 1998. The effect of six powered botanicals on egg deposition, hatchability and adult mortality of Callosobruchus maculatus. 9th Inter Con. Of Pesticide Chemistry. London, UK. pp 3A-054.

 

R.H.S. Rajapakse, S.G.J.N. Senanayake and Disna Ratnasekera, 1998. The effects of five botanicals on oviposition adult emergence and mortality of Callosobruchus maculatus on cowpea J. Ent.Res. 22(2): 117-122.

 

R.H.S. Rajapakse and Disna Ratnasekera 1998. The effect of combining vegetable oils with pirimiphos methyl in the management of Callosobruchus maculatus in stored cowpea. Proc. 7th Inter. Conf. on Stored Product Protection. Beijing, China. Pp 809-811.

 

TKH Sahabandu, Rohan Rajapakse and Disna Ratnasekera 1998. The effect of three pesticides and pesticide interval of Cinnamomum veram galls in Southern Sri Lanka.The Madras Agric. J. India. 85(7) 9.

 

Kudagamage, C. R.S. Munasinghe, Rohan Rajapaksa and Disna Ratnasekera 1996. Potentials of Paciolomyces fumosorroseus in the control of cabgage caterpillars. Tropical Agriculturist.151:59-62.

 

Kudagamage, C. and Disna Ratnasekera 1997. Pests and diseases of cucurbitaceae and their control (Sinhala). University of Ruhuna .University of Reading Link Publication. pp 13.

 

R.H.S. Rajapakse and Disna Ratnasekera 1997. Studies on the distribution and control of galls in cinnamon caused by Trioza cinnamomi Boselli in Sri Lanka. Inter. J. Trop. Agric. Haryana, India. 15 (1-4): 53-56.

 

BOOKS, BOOK CHAPTERS EDITED AND WRITTEN

 

R.H.S. Rajapakse and Disna Ratnasekera 2001.Seminar on Pest Control in the Next Millennium. ISBN: 955- 8566-00-4.

 

R.H.S. Rajapakse, Disna Ratnasekera and Saman Abeysinghe 2002. Control of pests and diseases in Low Country Vegitables (Sinhala). ISBN: 955-8187-02-X.

 

R.H.S. Rajapakse and Disna Ratnasekera 2002. Cashew Cultivation (Sinhala). ISBN: 955-97975-0-6.

 

R.H.S. Rajapakse and Disna Ratnasekera 2002. Pest control for eco-friendly Agriculture (Sinhala) (Book chapter) ISBN: 955-8869-00-7.

Investigations on the effect of biotic and abiotic stress response of plant species. Use of in vitro techniques as a tool in plant physiology and plant breeding for plant improvement.