Research  Publications

  1. Peiris, R. and S.D.G. Jayawardene. 1984. Need for breeding rice varieties for low temperature areas in Sri Lanka.  In proc.  Sri Lanka Ass.  Admi. Sci., 40 (1) P. 42. 
  2. Chang, T.T., J.L. Armentasota, C.X. Mao, R. Peiris and G.C. Loresto. 1985. Genetic studies on components of drought resistance in rice (Oryza sativa L.),Rice Genetics, IRRI, Los Banos, Philippines, P 387 -98.
  3. Peiris, R. 1985. Comparative studies of Aus, Bulu and Upland rices with emphasis on root characteristics and water uptake in relation to drought resistance.     Paper presented at Annual Research conference on cereals and grain legumes. 1985.
  4. Peiris, R.., S. Sri Ranjani and S.D.G. Jayawardene. 1985.studies on cold tolerance of rice varieties at germination and early seedling stage.  In proc. Sri Lanka Ass. Admit. Sci. 41 (1) p 25.
  5. Dissanayake, S.C.J., R. Peiris and S.D.G. Jayawardene. 1985.The performance of some recommended short aged rice varieties in low temperature area in Sri Lanka.  In proc. Sri Lanka Ass. Admt. Sc. 41 (1) p 26.
  6. Peiris, R. and S,D.G. Jayawardene. 1985.  Cultivation patterns and problems associated with rice culture in the low temperature regions of Sri Lanka.  Krushi Vol.8 No.1. 1985. July - Sept. p 20 - 28. 
  7. Dissanayake, S.C.J., R. Peiris and S.D.G. Jayawardene. 1986.  The effect of the age of “Dapog” seedlings on the growth and yield of rice in low temperature areas.  In  proc. Sri Lanka Ass. Admt. Sci., 42 (1) p 31.
  8. Peiris, R. and S.D.G. Jayawardene. 1986.  The genealogy of improved high yielding rice varieties of Sri Lanka.  In  proc. Sri Lanka Ass.  Admt. Sci. 42 (1) P 31.
  9. Peiris, R., S.C.J. Dissanayake and S.D.G. Jayawardene. 1986.  Performance of some newly bred cold tolerant rice lines in low temperature areas of  Sri Lanka.  In  proc. Sri Lanka Ass. Admt. Sci., 42 (1)  p.32. 
  10. Jayawardene, S.D.G., R. Peiris and S.C.J. Dissanayake. 1987.  A total concept in rice research and development through gene has and varietal spread pattern analysis.  In  proceedings of the symposium on Rice Research 16 - 17 June 1987.  Central Rice Breeding Station, Batalagoda Ibbagamuwa, Sri Lanka. P. 210. 
  11. Peiris, R. and S.D.G. Jayawardene.  1987.  Evaluation of some rice introductions for cold  tolerance.  In proc. Sri Lanka Ass.  Admt. Sci. 43 (1) p.34. 
  12. Peiris, R., I. Ratnayake and S.D.G. Jayawardene. 1987.  Preliminary investigations on mutagenic effects of gamma radiation on some indigenous cold tolerant  rice varieties. In proc. Sri Lanka Ass. Admt. Sci., 43 (1) p. 77.  
  13. Jayawardene, S.D.G. and R. Peiris. 1988.  Food crops breeding in Sri Lanka.  Achievements and challenges.  Bio News. Vol. 4 No.2. 1998 Sept. p.22 - 34. 
  14. Peiris, R. and S.D.G. Jayawardene. 1989.  Use of induced mutations for crop improvement programmes in Sri Lanka.  Krushi vol.II. N0. 93, 1989. Jan - March. P 17 - 22.  
  15. Sandanayake, C.A., B.D. Pathinayake and R. Peiris.  1990. New approaches for varietal improvement to meet future challenges.  In proceedings of the Rice congress 1990. Peradeniya, Sri Lanka. P 27 - 38.  
  16. Chang. T.T., Yonghao. Pan, Quien. Chu, R. Peiris and G.C, Loresto 1991.  Cytogenetic, electrophoretic and  root studies of Javanica rices.  Rice genetics II. IRRI, Los Banos, Philippines. P.21 - 31. 
  17. Peiris, R. and C.A. Sandanayake. 1992.  Evaluation of some medium maturity rice introductions in varietal improvement work.  In proc. Sri Lanka.  Ass. Admt. Sci., 48 (1) p. 36. 
  18. C.K. Bandaranayake., V.A. Sumanasinghe and R. Peiris. 1993.  Use of physical and chemical mutagens for the improvement of traditional rice varieties.  In proc. Sri Lanka.  Ass. Admt. Sci., 49 (1) p.122.  
  19. Peiris, R. 1994.  Performance of some elite lines of the 4-4.5 month rice breeding programme in a favourable irrigated ecosystems.  In proc. Sri Lanka. Ass. Admit. Sci., 50(1). P.29
  20. Peiris, .R. 1995..  Induction of mutations in variety Solar Set. In proc. Sri Lanka. Ass. Admt. Sci., 51(1) . P.41.
  21. Peiris, R. 1996.  Performance of some new tomato varieties in mid country wet zone.  In proc. Sri Lanka. Ass. Admt. Sc. 52(1) P. 93
  22. Bandara, S.K.,B. Wahundeniya, R. Peiris, I. Medagoda and A. Prematilake. 1996.  Work relating to utilization of Plant Genetic Resources in Crop Improvement by selection.  In proceedings of the workshop on present status and future prospects of plant genetic resources, conservation and utilization Dec. 9-12 1996, P. 116-120.
  23. Peiris, R. and D.M.R.K.K. Dissanayake. 1997 Genetic improvement of tomato variety Manik through induced mutations.  In proc. Sri Lanka.  Ass. Admit. Sci., 53(1) P.74
  24. Peiris,  R. and T.K. Wickremesinghe. 1997.  Evaluation of ten indeterminate type tomato varieties in midcountry wet zone In proc.  Sri Lanka Ass. Admit. Sci., 53 (1) P.75
  25. Peiris, R., D.M.R.K.K. Dissanayake and T.K. Wickremesinghe. 1998.  Induction of mutations in Tomato variety Manik.  In proc. Sri Lanka Ass. Admt. Sci., 54(1)  P.134.
  26. Peiris, R., and A.R.M. Maharouf.. 1998.  Research demonstrates higher profits of  tomato.  AGTEC  Vol. 3., No. 8. 
  27. Peiris, R., G. Kariyawasam and S.D.G. Jayawardena 1998.  A promising heat-tolerant tomato variety for high temperature areas in Sri Lanka.  In proc. Sri Lanka Ass. Admt. Sci, 54 (1) P. 134.
  28. Peiris, R., and S.D.G. Jayawardene. 1999.  Genetic improvement of tomato  (lycopersicon esculentum Mill)  through induced mutations.  In Report of FAO/IAEA seminar on mutation techniques and molecular genetics of tropical and subtropical plant improvement in Asia and Pacific region held at Philippines Oct. 11-15 1999.
  29. Peiris, R. and S. Ekanayake. 1999. Development and evaluation of a processing type tomato (Lycop-ersicon esculentum Mill) variety.  Annals of the Sri Lanka, Department of Agriculture,  (ASDA) Vol. 1. P. 11-18
  30. Peiris, R., T.K. Wickremesinghe and G. Kariyawasam. 1999.  A. Preliminary study on 14 indeterminate type Tomato introductions in midcountry wetzone.  In proc. Sri Lanka  Ass. Admt. Sci, 55 (1) P.34.
  31. B. Regunathan., R. Radakrishnan, A Palamakumbura, S.K. Tharmarajah, D. Siriwardana,N. Dharmarathnam, S. Ratnapala, S. Dissanayake and R. Peiris 2000 conservation and use of Plant Genetic Resources of some important vegetables paper presented at National Workshop on Plant Genetic resources Centre, Department of Siriwardene, N. Dharmarathnam Agriculture, Gannoruwa, Peradeniya. Nov. 8th – Nov. 10th 2000.
  32. Peiris, R., T.K. Wickremesinghe and A.G.G. Kariyawasam 2000 on-farm evaluation of elite tomato varieties In proc. Sri Lanka Ass. Admt. Sci. 56 (1) P. 107.
  33. Peiris, R. and T.K. Wickramesinghe. 2000. Tharidu – New Tomato variety for processing purpose Krushi magazine Vol. 18 No. 3-4  P 8 - 12. 
  34. Peiris, R.and G. Kariyawasam. 2000. Ravi – A heat tolerant tomato variety Krushi Magazine Vol. 18 No. 3-4  P 13 - 17.
  35. E.M. Balasubramaniam, R. Peiris 2001 on-farm trial for off-season vegetable production In proceedings of the final workshop – South Asia Vegetable Research Net Work Phase II Bangkok, Thailand P. 38-49.
  36. Peiris, R. and E.M. Balasubramaniam. 2001. Translating Research into farmers Application on-farm evaluation of Elite varieties.  In proceedings of the final workshop – South Asia vegetable Research Network Phase II Bangkok, Thailand P. 1-6.
  37. Peiris, R., T.K. Wickremasinghe and A.G.G. Kariyawasam. 2001.  HT1 - 16 - 38. A New tomato variety with high yield potential and bacterial wilt resistance.  In proc. Sri Lanka. Ass. Admt. Sci., 57 (1)  P.47. 
  38. Peiris, R., T.K. Wickremasinghe and A.G.G. Kariyawasam. 2001.  Tomato cultivation.  Govikam Sangarawa. Vol. 40 (1) P. 12-16
  39. Peiris, R. 2002.  Genetic improvement of tomato variety, Manik through induced mutations.  Annals of the Sri Lanka, Department of Agriculture.  (ASDA) Vol. 4. 199-205.
  40. Peiris, R., T.K. Wickremasinghe and A.G.G. Kariyawasam. 2002.  Evaluation of nine tomato introduction in mid country wet zone area.  In proc. Sri Lanka. Ass. Admt. Sci., 58 (1) P. 83.
  41. Peiris, R. and C. Kudagamage.  2002 of a promising tomato variety (HT 01) with bacterial wilt resistance and good fruit quality attributes.  In abstracts of international conference on vegetables Nov. 11-14, 2002, Banglore P. 46.
  42. Peiris, R. 2003. Genetic improvement of tomato through induced mutations In Contract research abstracts book P. 23-24
  43. Peiris, R. and T.K. Wickremasinghe. 2003. Evaluation and characterization of wild tomato germplasm. In proc. Sri Lanka Ass. Admt. Sci, 59(1) P.60 
  44. Peiris, R. 2004. Tomato Saubhagaya Vol.6 P. 28-31
  45. Peiris, R. and T.K. Wickremasinghe. 2004. The performance of HT 2123, a promising tomato variety with high yield potential. In proc. Sri Lanka. Ass. Admt.Sci., 60 (1) P.54
  46. Peiris, R. and D. P. P. Liyanage. 2004. Performance of exotic mung bean mutant germplasm materials in Sri Lanka, paper presented at Reviewing results of regional mutants multilocational trials, Korea 28th Oct. – 4th Nov.  2004
  47. Peiris, R. and N. P. S. De Silva.2004. Performance of exotic groundnut mutant  germplasm materials in Sri Lanka, paper presented at Reviewing results of regional mutants multilocational trials, Korea 28th Oct. – 4th Nov.  2004
  48. Peiris, R. and N. P. S. De Silva. 2004. Induction of mutations in groundnut variety “Walawa”, paper presented at Reviewing results of regional mutants multilocational trials, Korea 28th Oct. – 4th Nov.  2004.
  49. Peiris, R. and T.K. Wickremasinghe. Rajitha - A newly recommended tomato variety.  Krushi  (Accepted).
  50. Peiris, R. and T.K. Wickremasinghe. A new high yielding variety for cultivation.  Krushi  (Accepted). 50.p
  51. Peiris, R.  Seed production in tomato.  Govikam Sangarawa. (Accepted).
  52. Peiris, R. Tomato cultivation. A. Publication of the Department of Agriculture, Sri- Lanka (Accepted). 
  53. Peiris, R. and T.K. Wickremasinghe. 2005. Development of a tomato variety, Rajitha having bacterial wilt, resistant, high yield potential and good fruit quality characters. In    proceedings of Crop Science & Technology Congress (BCPC congress) UK, Glasgow p.563-568. 
  54. Peiris, R., T.K. Wickremasinghe and S. Senthuran. 2005. A local hybrid out performs the exotic hybrid varieties. Annals of the Sri Lanka, Department of Agriculture - ASDA Vol.7: 393-394.
  55. Peiris, R.and T.K. Wickremasinghe. 2005. Development of a cherry type tomato variety through induce mutation. In proc. Sri Lanka. Ass. Admt. Sci., 61(1).

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