IRUOR Home
→
Browsing by Author

Browsing by Author "Dahanayake, N"

Now showing items 1-13 of 13

Awareness about Exacum species (Binara/Ginihiriya) Among the University Students of Sri Lanka

Perera, P.C.D; Dahanayake, N (Faculty of Agriculture, University of Ruhuna, Sri Lanka, 2016-01-13)

There are eight Exacum species available in Sri Lanka. The genus Exacum is at risk of extinction due to various reasons. In some areas, the local populations of Exacum have been eliminated due to weed controlling. The ...
COLCHICINE INDUCED TETRAPLOIDS OF RADISH (Raphanus sativus L.)

Manawadu, IP; Dahanayake, N; Senanayake, SGJN (Faculty of Agriculture, University of Ruhuna, Sri Lanka, 2017-06-13)

Radish (Raphanus sativus L., Brassicaceae) is an edible root crop cultivated all over Sri Lanka. So a few attempts have been made in Sri Lanka to improve crop for higher yield and wider adaptability. Therefore the present ...
DEVELOPMENT OF IN-VITRO PROTOCOL TO ENHANCE MASS PRODUCTION OF TURMERIC (Curcuma longa L.)

Bandara, MMNT; Dahanayake, N; Perera, PCD; Subasinghe, S (Faculty of Agriculture, University of Ruhuna, Sri Lanka, 2023)

Conventionally, turmeric (Curcuma longa L.) is propagated through rhizomes. However, its multiplication rate is very low where a single turmeric rhizome approximately produces 6-8 lateral buds and nearly 20-25% of the ...
Effects of Freezing Time on Observation of Chromosomes in Exacum ritigalensis (Binara/Ginihiriya)

Perera, P.C.D; Dahanayake, N (Faculty of Agriculture, University of Ruhuna, Sri Lanka, 2017-01-19)

In this study, freezing time at 0.01% colchicine was practiced to observe chromosome from Exacum ritigalensis. Fifty, two weeks old seedlings of E. ritigalensis were randomly selected and all actively growing root tips ...
Effects of Mycorrhizae as a Substitute for Inorganic Fertilizer on Growth and Yield of Tomato (Lycopersicon esculentum), and Soil Microbial Activity

Alawathugoda, C.J; Dahanayake, N; Senanayake, S.G.J.N (Faculty of Agriculture, University of Ruhuna, Sri Lanka, 2013-03-15)

A Greenhouse experiment was conducted to determine the influence of mycorrhizae as a substitute for inorganic fertilizer on growth and yield of Tomato (Lycopersicon esculentum) and soil microbial activity. Four doses of ...
Effects of Various Gelling Agents on Growth and Development of Adventitious Buds of Purple Coneflower (Echinacea purpurea)

Dahanayake, N; Sheng, Y.Y (Faculty of Agriculture, University of Ruhuna, Sri Lanka, 2012-11-29)

Purple coneflower is a perennial medicinal herbaceous plant belongs to family Asteraceae, native to Midwestern and Southeastern United States. In addition to medicinal value, it has received considerable attention in ...
Effects of Water Stress on Plant Growth and Reproduction of Sunflower ( Helianthus annus L .)

Alawathugoda, C.J; Dahanayake, N; Ranawake, A.L (Faculty of Agriculture, University of Ruhuna, Sri Lanka, 2012-11-29)

Sunflower (Helianthus annus L.) productivity is strongly regulated by availability of water. In the present study we observed the growth and reproduction of sunflower due to 10 day water stress at different growth stages; ...
Evaluation of Level of Drought Tolerance in Traditional Rice Cultivars in Sri Lanka at the Seedling Stage

Madurangi, S.A.P; Ranawake, A.L; Dahanayake, N (Faculty of Agriculture, University of Ruhuna, Sri Lanka, 2012-11-29)

Rice consumes more water than any other commercially valuable crop. In the phase of increasing water shortage, introduction of rice cultivars with less water consumption is needed. Sri Lankan traditional rice cultivars ...
P 01 Effect of water stress at different growth and development stages on morphology and yield of Groundnuts (Arachis hypogea L.)

Alawathugoda, C.J; Dahanayake, N; Ranawake, A.L (University of Ruhuna, Matara, Sri Lanka, 2013-03-20)

Groundnut variety Tissa (Arachis hypogea L.) is sensitive to both excessive and deficit water which leads to decrease yield. We studied the growth and reproduction of Groundnut variety Tissa due to 10 day water stress ...
P 03 Preliminary observations on the allellopathic effect of some traditional rice cultivars on weed density under field condition and germination of barnyard grass (Echinochloa crusgalli L)

Ranawake, A.L; Amarasinghe, U.G.S; Dahanayake, N (University of Ruhuna, Matara, Sri Lanka, 2013-03-20)

With the objectives of understanding allelopathic effect of 68 traditional rice cultivars, field and laboratory experiments were carried out in 2011 Yala season at Faculty of Agriculture. Rice cultivars were transplanted ...
Potential of Alternative Cheap Gelling Agents for in vitro Micro-Propagation of Rice (Oryza sativa L)

Dahanayake, N; Ranawake, A.L; Wanitunga, U (Faculty of Agriculture, University of Ruhuna, Sri Lanka, 2012-11-29)

Plant tissue culture techniques often require optimizing cost reduction by substituting the culture medium with alternative gelling agents. This study was conducted to investigate various commercial products; agar, ...
Screening Some Modern Rice Cultivars for Submergence, Drought and Salinity Stress at Seedling Stage

Weragodavidana, P.S.B; Ranawake, A.L; Amarasingha, U.G.S; Dahanayake, N (Faculty of Agriculture, University of Ruhuna, Sri Lanka, 2012-11-29)

Rice is grown in varied environmental conditions where it shows different levels of reaction to abiotic stresses, depending on the environmental conditions of origin and, cultivation. Drought and high salinity are the ...
Spraying Colchicine on Flower Buds of Exacum Ritigalensis (Binara/Ginihiriya)

Perera, P.C.D; Dahanayake, N (Faculty of Agriculture, University of Ruhuna, Sri Lanka, 2017-01-19)

Exacum ritigalensis has a high potential to be introduced as a floricultural plant to the floriculture industry of Sri Lanka. In this regard, improvements of its morphological characters through genetic modifications ...

Now showing items 1-13 of 13

Search DSpace

Advanced Search

Browse

All of DSpace

Browsing by Author "Dahanayake, N"

Browsing by Author "Dahanayake, N"

Search DSpace

Browse

All of DSpace

My Account