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Department of Crop Science: Recent submissions

Now showing items 1-20 of 117

Use of Crop Plants for Removal of Toxic Metals.

Arunakumara, K.K.I.U (Springer, 2011)

Phytoextraction is an environmentally sound and cost-effective technology for cleaning up soils contaminated with toxic metals. The success of phytoextrac tion depends on the ability of plants to produce large amounts ...
Identification of joint efficiencies in 13 mm finger jointed timber species used in Sri Lanka.

Muthumala, C.K; De Silva, S; Arunakumara, K.K.I.U; Alwis, P.L.A.G (Springer, 2018)

When using timber in construction and the furniture manufacturing industry, waste timber materials and short length sections of timbers which are dumped by sawmills are considered to be matter of concern. ‘Finger joint’ ...
Investigation of the Relationship Between Densities Versus Mechanical Properties of Sri Lankan Timber Species.

Muthumala, C.K; De Silva, S; Arunakumara, K.K.I.U; Alwis, P.L.A.G (Springer, 2020)

The aim of this study was to investigate the relationships among wood density, modulus of rupture (MOR), modulus of elasticity (MOE), compression parallel to grain (CNP) and compression perpendicular to grain (CPG) in ...
Investigation of the Best Joint Type for Combining of the Finger-Jointed Timber Panels in Board Production.

Muthumala, C.K; De Silva, S; Arunakumara, K.K.I.U ; Alwis, P.L.A.G (Springer, 2020)

Waste sawn timber material in furniture factories and short length of sawn timber are serious problems in timber industry. To further suggest ways to minimize the waste, by applying a jointing system, this paper utilizes ...
Seed germination dynamics of Gymnema sylvestre as influenced by sowing media and storage period.

Arunakumara, K.K.I.U; Subasinghe, S. (Postgraduate Institute of Agriculture, Peradeniya, Sri Lanka, 2004)

Most medicinal plant species have become rare due to over exploitation from natural habitats. In general, a little emphasis has been placed on production of planting material for commercial cultivation of medicinal ...
Anti-hypercalcemic effect of orally administered recombinant Saccharomyces cerevisiae expressing salmon calcitonin on hypercalcemic rats.

Sun, P; Zhang, X; Zang, X; Zhou, X; Chen, Y; Arunakumara, K.K.I.U; Liang, B (Springer, 2007)

Oral delivery of salmon calcitonin (sCT) to rats via a recombinant Saccharomyces cerevisiae was assessed. A synthetic sCT gene was cloned and expressed in S. cerevisiae yAGA2- sCT. Recombinant salmon calcitonin ...
Effect of growth hormone transgenic Synechocystis on growth, feed efficiency, muscle composition, haematology and histology of turbot (Scophthalmus maximus L.).

Liu, S; Zang, X; Liu, B; Zhang, X; ArunaKumara, K.K.I.U; Zhang, Xiaoqing; Liang, B (Blackwell Publishing Ltd, 2007)

The present study investigated the e¡ect of supple menting feed with transgenic Synechocystis sp. PCC6803 containing the Paralichthys olivaceus growth hormone (GH) gene on growth, feed intake and feed e⁄ciency ratio, ...
How does lead (Pb2+) at low concentrations affect on Spirulina (Arthrospira) platensis.

Arunakumara, K. K. I. U.; Xuecheng, Z. (University of Ruhuna, Sri Lanka, 2007)

Spirulina (Arthrospira) platensis, a blue-green photoautotrophic alga has widely been used for the production of high valued protein for human and animal feeding as well. The present study focused on bioaccumulation ...
Comparative study on bioaccumulation of lead and cadmium by the cyanobacterium Synechocystis sp. PCC 6803 under laboratory conditions.

Arunakumara, K. K. I. U; Xuecheng, Z; Song, X (PKP Publishing, 2007)

Bioremoval techniques have been employed in cleaning water bodies that suffer from detrimental effects of heavy metal pollution. In the present laboratory study, bioaccumulation of Pb2+ and Cd2+ was assessed using the ...
Optimum conditions for transformation of Synechocystis sp. PCC 6803.

Zang, X; Liu, B; Liu, S ; Arunakumara, K. K. I. U; Zhang, Xuecheng (The Microbiological Society of Korea, 2007)

This study was conducted to determine the optimal conditions for introduction of exogenous DNA into Synechocystis sp. PCC 6803. Of the three transformation techniques studied, electroporation, ultrasonic transformation ...
Effect of Pb2+on phycobili protein content of Spirulina platensis, an edible cyanobacterium.

Arunakumara, K.K.I.U; Zhang, X (Postgraduate Institute of Agriculture, Peradeniya, Sri Lanka, 2007)

Among the commercialized microalgae, increasing attention is being focused on Spirulina plantensis, because of its multi-nutritional properties and other benefits. Taking in to consideration that the chemical composition ...
Plurispore development of Cladosiphon okamuranus Tokida (Chordariaceae, Phaeophyta).

Zhu, Q; Zhang, X; Xu, D; Arunakumara, K. K. I. U; Shi, Y; Zhu, L (Bangladesh Botanical Society, 2007)

Development of plurispores and effects of temperature on their attachment to substrata were studied using mature plurilocular sporangia of Cladosiphon okamuranus Tokida. Development of plurispore showed the disc type, ...
Growth and pigment biosynthesis of Spirulina platensis as affected by Pb2+ concentrations.

Arunakumara, K. K. I. U; Xuecheng, Z; Yijing, Z (Bangladesh Botanical Society, 2007)

Growth and pigment biosynthesis of Spirulina platensis Geitler, an edible cyanobacterium were stimulated at low concentration (1 mg/l) of Pb2+ . The pigment biosynthesis was found to decrease with increasing Pb2+concentrations. ...
Heavy metal bioaccumulation and toxicity with special reference to microalgae.

Arunakumara, K.K.I.U; Zhang, X.C (Ocean University of China, 2008)

The bioaccumulation and toxicity of heavy metals were reviewed with special reference to microalgae, the key compo nent of the food web in aquatic ecosystems. Heavy metals enter algal cells either by means of active transport ...
Growth, feed efficiency, body muscle composition, and histology of flounder (Paralichthys olivaceus) fed GH transgenic Synechocystis.

Liu, S; Zhang, X; Zang, X; Liu, B; Arunakumara, K. K. I. U; Xu, D; Zhang, Xiaoqing (ELSEVIER, 2008)

Effects of transgenic Synechocystis sp. PCC6803 (SYN) containing flounder growth hormone gene on survival, growth, feed efficiency, muscle composition and histology of flounder were assessed in a 7-week feeding trial. 180 ...
Genotoxic evaluation of the GH transgenic Synechocystis using mice and turbot (Scophthalmus maximus L.).

Liu, S; Zhang, X; Zang, X; Arunakumara, K. K. I. U (ELSEVIER, 2008)

In the present paper, the genotoxicity of transgenic Synechocystis sp. PCC 6803 containing flounder (Par alichthys olivaceus) growth hormone gene has been assessed using micronucleus tests in mice and fish. No micronucleus ...
Bioaccumulation of Pb2+ and its effects on growth, morphology and pigment contents of Spirulina (Arthrospira) platensis.

Arunakumara, K. K. I. U; Zhang, X; Song, X (SP Science Press, 2008)

A laboratory experiment was conducted to assess the bioaccumulation of Pb2+ and its effects on growth, morphology and pigment contents of Spirulina (Arthrospira) platensis. The specimen cultured in Zarrouk liquid medium ...
Effects of heavy metals (Pb2+ and Cd2+) on the ultrastructure, growth and pigment contents of the unicellular cyanobacterium Synechocystis sp. PCC 6803.

Arunakumara, K.K.I.U; Xuecheng, Z (SP Science Press, 2009)

The unicellular cyanobacterium Synechocystis sp. PCC 6803, a model organism known for its unique combination of highly desirable molecular genetic, physiological and morphological characteristics, was employed in the ...
Home gardening as a tool for improving food and nutritional security - A case study at Madiha and Gandara in Sri Lanka.

Arunakumara, K.K.I.U; Subasignhe, S; Senaratne, R (University of Ruhuna, Sri Lanka, 2009)

Improvements of food and nutritional security of coastal communities affected by the Tsunami is a matter of great concern. Home gardening, in this regard, is highly considered as it could make an important contribution ...
Ultrastructure of sporophyte of Cladosiphon okamuranus Tokida (Ectocarpales, Phaeophyceae).

Zhu, Q; Zhang, X; Arunakumara, K. K. I. U (Faculty of Agriculture, 2009)

Transmission Electron Microscopy of 35 day old culture of Cladosiphon okamuranus Tokida, revealed several chloroplasts and other organelles in each cell of assimilatory filaments. Each chloroplast possesses single ...

Now showing items 1-20 of 117

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