Research Symposium-2011

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Browsing Research Symposium-2011 by Author "Alwis, L.M.H.R."

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    Characterization of Phaseolous vulgaris L.(Common Bean) Accessions Collected from Farmer Fields by Using Morphological Characters
    (Uva Wellassa University of Srilanka, 2011) Kanakwatta, J.M.R.A.B.; Ariyarathna, H.M.; Alwis, L.M.H.R.
    Common bean Phaseolous vulgaris L is a major and popular vegetable in Sri Lanka which belongs to the family Leguminosae. In Sri Lanka, bean is mainly cultivated in Badulla, Nuwara Eliya, Kandy, Rathnapura and Matale districts (Prabaharan, 2004). Different bean varieties have been recommended by the Department of Agriculture considering their desirable morphological characters. The yield of those recommended Sri Lankan varieties are less than those varieties in the world and they are susceptible to the major diseases and pest attacks (Prabaharan, 2004). The landraces developed by natural process of selection at farmers' fields may bear precious characters. These landraces may be among the accessions collected from the farmer fields. The objective of this research is to characterize different accessions collected from the farmers' fields to be used in bean breeding programs
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    Germination and Water Requirement for cooking of Dehulled Rice at Different Degree of Polishing
    (Uva Wellassa University of Srilanka, 2011) Pothmitiyage, D.H.K.; Abeysiriwardhana, S.; Alwis, L.M.H.R.
    Note: See the PDF Version Rice (Oryza saliva L.) is a cereal and it is the staple food of the most parts of the world including the South and the South East Asia, the Middle East, Latin America, and the West Indies. Rice cultivation occupies 34 percent of the total arable lands in Sri Lanka and is cultivated as a wetland crop in all the districts. At present, Sri Lanka is exporting rice with high grain quality to several countries like United States of America, Canada, Germany and Australia. Retaining seed viability of red rice even after milling is a problem faced in rice exportation as most foreign countries consider red rice as a weed. In addition, varying water requirement for cooking rice at different degrees of polishing is another problem. Determination of the influence of de-hulling and degree of polishing on germination of rice grains, determination of the water requirement for cooking of rice at different degrees of polishing, influence of degree of polishing on cooking time and volume expansion of cooked rice were the objectives of this research.
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    Taxonomic Status of Rhipsalis baccifera in Sri Lanka
    (Uva Wellassa University of Srilanka, 2011) Ramanayake, R.M.D.N.; Alwis, L.M.H.R.; Rajapaksha, R.
    Note: See the PDF Version As a part of the conservation, domestication of wild plant as an ornament is fascinating. Rhipsalis baccifera (Muller) Stearn has high demand as an ornamental plant and it is used as potted plant, house plant or in ornamental gardens (Bricker, 1996). Apart from their ornamental value, R. baccifera has value as a powerful ayurvedic medicine which is still used in indigenous community. It is generally known as "Nawahandi" and often used for fractures and dislocations (Department of Ayurvadic, 2004). Furthermore, it is goodmedicine for chest complains, body cleansing and stomach complains (Niue, 2009).Although the latest revision of Flora of Ceylon Vol. XIII (Weerasooriya, 1999) recorded two sub species of R. baccifera as sub species baccifera and sub species mauritiana in Sri Lanka, the available information is not strong to distinguish these two sub species. The herbarium specimens at the National Herbarium, Peradeniya also do not either provide evidences satisfactorily or strong support to distinguish these two sub species. Therefore this study was carried out to evaluate the taxonomic status of the native species Rhipsalis baccifera.