4.Journals Published in Sri Lanka
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Item Assessment on the drought tolerant capabilities of newly released tea clones(Tea Research Institute:Thalawakele, 1999) Karunaratne, P.M.A.; Wijeratne, M.A.; Sangakkara, U.R.Item Some observations on practices to be adopted in minimising drought effects in new clearings of tea plantaions(Tea Reseaech Institute:Talawakele, 1989) Wijeratne, M.A.; Ekanayake, P.B.Item Effect of different mulching materials on soil properties and growth of young tea(Tea Research Institute. Talawakele, 1994) Wijeratne, M.A.; Ekanayake, P.B.; Vithana, D.W.Item Effect of potassium on water use efficiency of young tea (Camellia sinensis L.)(Soil Science Society of Sri Lanka:PEradeniya, 1989) Wadasinghe, G.; Wijeratne, M.A.Item Water relations of clonal tea (Camellia sinensis L.) with reference to drought resistance I. diurnal variations(University of Ruhuna. Kamburupitiya, 1998) Wijeratne, M.A.; Fordham, R.; Anandacumaraswamy, A.The diurnal variations of water relations of the tea plant were studied using potted young tea plants with particular reference to drought tolerance. Glasshouse experiments showed that the diurnal changes of plant water relations of tea are largely governed by the environmental factors such as solar radiation and saturation vapour pressure deficit. Accordingly, diffusive resistance and relative water content of both drought tolerant and susceptible clones were low during the mid day. Drought tolerant tea clones possess higher stomatal diffusive resistance, lower transpiration rates and higher leaf turgidity over the day time. Moreover, they conserve moisture by reducing transpiration rate at the latter part of the day earlier than that of drought susceptible clones.