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IRSPAS 2018: Recent submissions

Now showing items 161-180 of 183

Ant visitors and ant pollination of Jatropha curcas L. at three localities in Sri Lanka

Jayathilaka, M. S. T.; Dias, R. K. S. (Research Symposium on Pure and Applied Sciences, 2018 Faculty of Science, University of Kelaniya, Sri Lanka, 2018)

Ant visitors (Formicidae) and the contribution of worker ant species to the pollination of Jatropha curcas L., a plant producing seeds that are considered a source of biofuel, at three localities of Gampaha district were ...
Isolation of fungal spp. associated with the rhizosphere of Suwandel, a traditional Sri Lankan rice variety and their phosphate solubilizing ability

Umang, R. A. T.; Deshappriya, N.; Sandamali, T. G. I. (Research Symposium on Pure and Applied Sciences, 2018 Faculty of Science, University of Kelaniya, Sri Lanka, 2018)

Rice (Oryza sativa L.) is the staple food in Sri Lanka. Cultivation of traditional rice varieties using organic farming practices is a solution for the high agrochemical usage on improved rice varieties. Amongst microorganisms, ...
Effect of feeding herbal enriched Artemia on the growth performance and stress resistance of guppy fry (Poecilia reticulata)

Sandamali, L.; Kumudu, R.; Sajani, R.M. (Research Symposium on Pure and Applied Sciences, 2018 Faculty of Science, University of Kelaniya, Sri Lanka, 2018)

Artemia is one of the commonly used live-feed in hatchery production in aquaculture industry. The nutrient composition of Artemia can be enhanced by bioencapsulation using various sources. The present study was conducted ...
Screening of selected invasive plant extracts for antifungal activity against Colletotrichum gloeosporioides

Karunarathna, T.C.M.F.; Damunupola, J.W.; Bandara, B. M. R. (Research Symposium on Pure and Applied Sciences, 2018 Faculty of Science, University of Kelaniya, Sri Lanka, 2018)

High-quality ornamental plant products are needed for export-scale floriculture. A major barrier to provide high quality products is the wide prevalence of plant pathogenic diseases. Colletotrichum gloeosporioides causes ...
A novel potentiometric ion selective sensor based on piperine for determination of Fe3+ ions

Haputhanthri, M.; Perera, L.H.R. (2018)

Iron plays a vital role in humans as iron deficiency cause anemia and overload of iron leads to haemochromatosis. In plants, chlorosis is a common plant disorder that arises as a result of iron deficiency, whilst excess ...
Callus induction in anther culture of selected Capsicum annuum L. varieties

Rajakaruna, R.H.M.S.V.; Kumari, H.M.P.S.; Seran, T.H. (Research Symposium on Pure and Applied Sciences, 2018 Faculty of Science, University of Kelaniya, Sri Lanka, 2018)

Plant breeding programs of capsicum can be accelerated through double haploid plant production. One of the easier ways to produce double haploid plants is anther culture. This experiment was carried out to induce anther ...
Correlation between selected morphological and biochemical parameters in a hybrid tea population with the blister blight disease

Weerasooriya, C.R.; Kottawaarachchi, J.D.; Ranathunga, M.A.B.; Amarakoon, A.M.T. (Research Symposium on Pure and Applied Sciences, 2018 Faculty of Science, University of Kelaniya, Sri Lanka, 2018)

Tea is produced from the plant species Camellia sinensis. Blister blight is a major leaf disease caused by the fungus Exobasidium vexans in tea resulting in significant yield losses, debilitation and death of tea bushes . ...
Detection of cylindrospermopsin and microcystin-LR in well water of CKDu prevalent Medirigiriya, Sri Lanka

Abeysiri, H.A.S.N.; Wanigasuriya, K.; Manage, P.M. (Research Symposium on Pure and Applied Sciences, 2018 Faculty of Science, University of Kelaniya, Sri Lanka, 2018)

Cyanobacterial blooms in aquatic systems have increased over recent decades. Many of the blooms are highly toxic, causing a serious hazard to human and animal health. The commonest cyanotoxins are hepatotoxins such as ...
Isolation of Salmonella spp. and Shigella spp. from ground and surface water in the lower part of the Kelani river basin: evaluation of resistance against selected antibiotics

Abinaiyan, I.; Mahagamage, M.G.Y.L.; Manage, P.M. (2018)

In recent years, greater attention has been paid by national and international agencies on microbial contamination of ground and surface water sources. Antibiotics are commonly used to treat emerging infectious diseases ...
Effect of dietary probiotic on growth performance, feed utilization and stress resistance of guppy (Poecilia reticulata)

Samarawardhane, H.R.T.T.; Radampola, K.; Rathnapala, J.M.S.N. (Research Symposium on Pure and Applied Sciences, 2018 Faculty of Science, University of Kelaniya, Sri Lanka, 2018)

The present study was conducted to investigate the influence of dietary supplementation of probiotic mixture, AQUALACTTM on growth performance, feed utilization and stress resistance of guppy fish, Poecilia reticulata. ...
Cucurbit chlorotic yellows virus (CCYV) infection of pumpkin (Cucurbita maxima) in Sri Lanka

Abeykoon, A.M.S.K.; Basnayake, B.M.V.S.; Salim, N. (Research Symposium on Pure and Applied Sciences, 2018 Faculty of Science, University of Kelaniya, Sri Lanka, 2018)

Viral diseases are serious constraints to the productivity and profitability of cucurbit crops. Although many popular cucurbitaceous fruits and vegetables are grown in various regions in Sri Lanka, only a few published ...
Isolation and identification of thermophilic bacteria and cyanobacteria from Maha Oya hot springs in Sri Lanka

Medhavi, P.I.H.R.; Samarasinghe, D.G.S.N.; Herath, H. (Research Symposium on Pure and Applied Sciences, 2018 Faculty of Science, University of Kelaniya, Sri Lanka, 2018)

Hot springs are a rich source of thermophilic microorganisms such as bacteria, cyanobacteria and archaea. Though, there are several hot springs recorded in Sri Lanka, a comprehensive community analysis of thermophilic ...
Okra leaf curl disease: an emerging threat to okra cultivation in Northern Sri Lanka

Jeyaseelan, E.C.; Sharmya, M.; Jeyaseelan, T.M.; Shaw, M.W. (Research Symposium on Pure and Applied Sciences, 2018 Faculty of Science, University of Kelaniya, Sri Lanka, 2018)

Okra (Abelmoschus esculentus) is cultivated in tropical, subtropical, and warm temperate regions for its edible fruits. During the last few years okra cultivation in South Asia has been severely affected by okra yellow ...
Diversity of Yala season diurnal ant community in two selected rice fields in the Wet Zone of Sri Lanka

Wickramasinghe, W.P.C.S.; Dias, R.K.S. (Research Symposium on Pure and Applied Sciences, 2018 Faculty of Science, University of Kelaniya, Sri Lanka, 2018)

Studies on the ant communities of Wet Zone rice fields in Sri Lanka are scarce and the present study was conducted to determine the diversity and species composition of ants throughout Yala season. Worker ants were sampled ...
Impact of short term aerobic exercises on taste perception for sucrose in patients with type 2 diabetes mellitus

Vidanage, D.; Hettiarachchi, P.; Prathapan, S.; Wasalathanthri, S. (Research Symposium on Pure and Applied Sciences, 2018 Faculty of Science, University of Kelaniya, Sri Lanka, 2018)

Exercise, along with diet and medications plays an important role in the management of type 2 diabetes. Several long-term studies have demonstrated that regular exercise is beneficial in increasing insulin sensitivity in ...
Biodegradation of Geosmin and 2-methylisoborneol by novel, native, Gram negative bacteria in Sri Lanka

Ganegoda, S.S.; Chinthaka, S.D.M.; Manage, P.M. (Research Symposium on Pure and Applied Sciences, 2018 Faculty of Science, University of Kelaniya, Sri Lanka, 2018)

Trans-1, 10-dimethyl-trans-9-decalol (Geosmin) and 2-methylisoborneol (2-MIB) are key compounds which cause taste and odour (T and O) issues in drinking water. Despite no recorded health hazards, consumers reject the water ...
Sensitivity of four freshwater animal species to copper and cadmium under tropical temperature exposure

Heshani, A.L.S.; Pathiratne, A. (Research Symposium on Pure and Applied Sciences, 2018 Faculty of Science, University of Kelaniya, Sri Lanka, 2018)

Copper and cadmium are two common pollutants in Sri Lankan freshwater ecosystems. Water quality criteria for these metals focusing on the protection of freshwater species in Sri Lanka are yet unavailable. Formulating water ...
Characterization of tissue specific cholinesterases in native fishes, Rasbora daniconius and Dawkinsia singhala: their sensitivity to the heavy metal, copper

Premarathna, K.I.R.; Pathiratne, A. (Research Symposium on Pure and Applied Sciences, 2018 Faculty of Science, University of Kelaniya, Sri Lanka, 2018)

Aquatic pollutants could pose health hazards to humans and wildlife. Cholinesterases (ChEs) have been recognized as biomarkers of exposure to a range of aquatic pollutants including organophosphate and carbamate pesticides ...
Cadmium and arsenic levels in edible fishes, Oreochromis niloticus (Nile tilapia) and Ompok bimaculatus (Pena walaya) from Padaviya reservoir of North Central Province, Sri Lanka

Weerasekara, K.A.W.S.; Pathiratne, A.; Kithsiri, H.M.P. (Research Symposium on Pure and Applied Sciences, 2018 Faculty of Science, University of Kelaniya, Sri Lanka, 2018)

Oreochromis niloticus (Nile tilapia) and Ompok bimaculatus (Pena walaya) are two edible fish species captured in the reservoirs in the North Central province. Objective of this study was to assess the cadmium and arsenic ...
Comparative study on the effect of different substrate compositions on performance of tissue cultured Dendrobium bigibbum during the prehardening process

Perera, H.S.M.; Rodrigo, W.U.M.; Perera, U.I.D.; Swarnathilaka, D.B.R. (Research Symposium on Pure and Applied Sciences, 2018 Faculty of Science, University of Kelaniya, Sri Lanka, 2018)

Development of planting material using tissue culture is an established and widely used mass propagation method in the floriculture industry. However, considerable percentage of tissue culture raised plants may not survive ...

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