Ceylon Journal of Science (Biological Sciences)
Permanent URI for this collectionhttps://dl.nsf.gov.lk/handle/1/7565
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Item The biology and control of saccharicoccus sacchari Ckll. (Hom : Pseudococcidae) the pink mealy bug of sugar cane in Sri Lanka(University of Peradeniya. Peradeniya, 1974) Rajendra, A.Item Development of suitable propagation techniques and management practices for the cultivation of the medicinal plant Piper longum L.(University of Peradeniya. Peradeniya, 2005) Pathiratna, L.S.S.; Joseph, K.D.S.M.; Perera, M.K.P.Item Effect of postharvest calcium chloride vaccum infiltration on the shelf life and quality of tomato (CV. `Thina')(2010) Senevirathna, P.A.W.A.N.K.; Daundasekera, W.A.M.Item Growth of rice variety BW 267-3 as affected by diazotrophs, inoculated under different conditions(University of Peradeniya. Peradeniya, 2002) Rizvi, E.M.J.M.; Kulasooriya, S.A.Item Insecticide resistance in the bruchid callosobruchus maculatus, a storage pest of legumes(University of Peradeniya. Peradeniya, 2002) Bogamuwa, M.M.S.; Weerakoon, K.C.; Karunaratne, S.H.P.P.Item A preliminary investigation on the response of some locally popular vegetables to postharvest hot water treatment(University of Peradeniya. Peradeniya, 1999) Karunaratne, A.M.Item Salinity tolerance at cellular level of some high yielding local cultivars of Oryza sativa (rice)(University of Peradeniya. Peradeniya, 1998) Hiriburegama, K.; Basnayake, R.Five cultivars of rice (Oryza sativa) were tested for salinity tolerance at cellular level. Seed callus of the cultivars (BW 351, AT 354, BG 94-1, AT 402) was developed on Murasinghe and SkooItem A survey of post-harvest losses in some fruits and vegetables and the fungi associated with them(University of Peradeniya. Peradeniya, 1986-87) Adikaram, N.K.B.A survey was conducted of the post-harvet losses in some fruits and vegetables in the Central Province of Sri Lanka where 35 fruit and vegetable stalls were visited and imformation on storage practices and losses in various commodities gathered. The figures showed that losses in the range of 5-25perc. are commonplace in most commodities. Shelf life in many of these did not exceed 6-7 days. Thirty seven species of fungi belonging to 13 genera were isolated from the diseased fruit and vegetable samples collected in this survey. According to the nature of the infection and subsequent rotting these fungi could be divided in to two major categories:(1) those fungi that invade overripe fruit through mechanical wounds and cause latent infections in the immature fruits and develop rotting only when the fruit is ripened.Item Tissue culture of Innala (Solenostemon rotundifolius (POIR.) J.K.MORTON) High frequency plant regeneration from leaf examples(1995) Rajapakse, D.P.; Mendis, M.H.; Ganashan, P.Leaf explants of innala (Solenostemon rotundifolius (Poir.)J.K.Morton) were cultured on media prepared with MS salts,organic constituenets of NN,sucrose (40g/IW/V)and growth regulators.NAA,2,4-D,BAP andKn were used as growth regulators. Callus formation and subsequent shoot regeneration from cultured explants were observed in the presence of 0.8-1.0 mg/I BAP in the medium. When low concentration (0.5mg/I) of NAA was present in the medium, a higher level(5-6mg/I) of BAP was required for induction of shoots. The frequency of callus formation or shoot regeneration in such was as high as 100.