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In silico molecular and morphological analysis of rice blast resistant gene Pi-ta in Sri Lankan rice germplasm

Terensan, S; Fernando, H.N.S.; Silva, J.N.; Perera, S.A.C.N; Kottearachchi, N.S.; Weerasena, O.V.D.S (Journal of Genetic Engineering and Biotechnology, 2021)

Pi-ta is a major blast resistant gene, introgressed from indica rice varieties. In this study, diversity of the Pi-ta gene of 47 Sri Lankan rice accessions was studied by bioinformatics, and the results were validated ...
Development of a CAPS marker for the badh2.7 allele in Sri Lankan fragrant rice (Oryza sativa)

DISSANAYAKA, S; KOTTEARACHCHI, N.S.; WEERASENA, J.; PEIRIS, M. (Blackwell, 2014)

Fragrance in rice is caused by mutations in the badh2 (betaine aldehyde dehydrogenase) gene. It was previously reported that exons 1, 2, 7, 10, 13 and 14 of badh2 are hot spots for various mutations leading to fra grance ...
Single nucleotide polymorphisms in GBBSI and SSa genes in relation to starch physicochemical properties in selected rice (Oryza sativa L.) varieties

Alweera, D; Kottearachchi, N.S.; Gimhani, D. R.; Senarathna, K (WORLD JOURNAL OF BIOLOGY AND BIOTECHNOLOGY, 2020-05-09)

Starch quality is one of the most important agronomic traits in rice (Oryza sativa L). In this study, we identified single nucleotide polymorphisms (SNPs) in the Waxy and Alk genes of eight rice varieties and their ...
In Silico Identification of QTL-Based Polymorphic Genes as Salt-Responsive Potential Candidates through Mapping with Two Reference Genomes in Rice

Abhayawickrama, B.; Gimhani, D.; Kottearachchi, N.; Herath, V.; Liyanage, D.; Senadheera, P. (Plants, 2020-02-11)

Recent advances in next generation sequencing have created opportunities to directly identify genetic loci and candidate genes for abiotic stress responses in plants. With the objective of identifying candidate genes ...
SNP‑based discovery of salinity‑tolerant QTLs in a bi‑parental population of rice (Oryza sativa)

Gimhani, D. R; Gregorio, G.B.; Kottearachchi, N.S.; Samarasinghe, W. L. G. (© Springer, 2016)

Breeding for salt tolerance is the most promising approach to enhance the productivity of saline prone areas. However, polygenic inheritance of salt tolerance in rice acts as a bottleneck in conventional breeding for ...
In silico analysis of the fragrance gene (badh2) in Asian rice (Oryza sativa L.) germplasm and validation of allele specific markers

Withana, W.V.E.; Kularathna, R.M.R.E; Kottearachchi, N.S.; Kekulandara, D.S; Weerasena3, J.; Steele, K.A. (Plant Genetic Resources: Characterization and Utilization, 2020-01-08)

Badh2 of rice is considered to be the major gene responsible for the fragrance in rice. The wild type badh2 allele encodes betaine aldehyde dehydrogenase 2 (BADH2) enzyme while the mutated version of badh2 gene encodes ...
EXPLORATION OF RELATIONSHIP BETWEEN FRAGRANT GENE AND GROWTH PERFORMANCES OF FRAGRANT RICE (Oryza sativa L.) SEEDLINGS UNDER SALINITY STRESS

Wijerathna, Y M A M; Kottearachchi, N S; Gimhani, D R; Sirisena, D N (Journal of Experimental Biology and Agricultural Sciences, 2014-02)

Fragrant rice is associated with poor agronomic traits and low tolerability to salt stress. Present study was conducted to examine the relationship between fragrant intensity of Sri Lankan rice germplasms and their ...
Comparative Analysis of Salinity Responsive Candidate Gene Expression in Selected Sri Lankan Rice Varieties

Gimhani, D.R.; Vergara, G.; Gregorio, G.B.; Kottearachchi, N.S. (2015)

Studying of expression dynamics of salt responsive candidate genes under different genetic background of rice is important to develop resilient salt tolerant rice varieties. The present study was focused to assess ...
EFFECT OF BIOLOGICAL AGENTS AND BOTANICALS IN CONTROLLING ROOT KNOT NEMATODES, MELOIDOGYNE SPP., IN NICOTIANA TABACUM

Motha, KF; Abeysekara, R.; Kottearachchi, NS (Faculty of Agriculture, University of Ruhuna, 2010-02-19)

A study was conducted to investigate the effectiveness of Pseudomonas fluorescens and Trichoderma viride and two botanicals; ground neem seed and tobacco waste dust for the control of Root-Knot Nematodes (RKN) in Tobacco. ...
Assessment of Salinity Tolerance and Analysis of SSR Markers Linked with Saltol QTL in Sri Lankan Rice (Oryza sativa) Genotypes

Dahanayaka, B. A.; Gimhan, D. R; Kottearachch, N. S.; Samarasighe, W. L. G. (American Journal of Experimental Agriculture, 2015)

Aim: This research was aimed at assessing Sri Lankan rice varieties for the salinity tolerance using morphological traits and to analyze the SSR markers closer to Saltol QTL of the chromosome 1 to be used in rice ...
Utilization of SNP-based Highly Saturated Molecular Map of a RIL Population for the Detection of QTLs and Mining of Candidate Genes for Salinity Tolerance in Rice

Abhayawickrama, B.P.; Gimhani, D.R.; Kottearachchi, N.S.; Herath, V. (The Journal of Agricultural Sciences - Sri Lanka, 2020)

Purpose : Previously, QTL hotspots were identified for salt tolerance from a RIL population of At354 x Bg352, under a temperature-controlled environment at the International Rice Research Institute, Philippine. However, ...
MICROSATELLITE MARKER BASED HYBRIDITY ASSESSMENT FOR SALINITY TOLERANCE IN RICE

Gimhani, D. R.; Kottearachchi, N. S.; Samarasinghe, W. L. G. (The Journal of Agricultural Sciences,, 2007)

Development salinity tolerant rice varieties have been a prioritized research area in rice breeding programs in Sri Lanka. Present study was initiated with the cross of At354, a salt tolerant parent and Bg352, a salt ...
MOLECULAR EVALUATION OF POTENTIAL RESISTANCE TO PAPAYA RING SPOT VIRUS IN MOUNTAIN PAPAYA (VASCONCELLEA CUNDINAMARCENSIS)

Rajapakshe, Bhavani N.; Kottearachchi, Nisha S.; Wickramarachchi, Ravin T.; Amalka, Thilini (Pakistan Phytopathological Society, 2017)

Papaya Ring Spot virus (PRSV) is a devastating viral disease in papaya cultivation in Sri Lanka. It was reported that mountain papaya (Vasconcellea cundinamarcensis) exhibits resistance to PRSV. Therefore, this study was ...
APPLICATION OF DNA MARKERS FOR THE DETECTION OF AMYLOSE CONTENT IN SRI LANKAN RICE (ORYZA SATIVA L.) VARIETIES

Kottearachchi, N.S.; Peiris, R.K.; Rebeira, S. (Asian J Agri Biol, 2014)

Grain quality improvement of rice is considered as prioritized research area in rice breeding programs in Sri Lanka. Amylose Content (AC) is a key determinant of end quality of rice. Amylose Content is controlled by ...
QTL MAPPING FOR SALINITY TOLERANCE USING AN ELITE RICE (Oryza sativa) BREEDING POPULATION

DAHANAYAKA, B.A.; GIMHANI, D.R.; KOTTEARACHCHI, N.S.; SAMARASIGHE, W.L.G. (SABRAO Journal of Breeding and Genetics, 2017-02-17)

A recombinant inbred line (RIL) population was previously developed with two high yielding rice varieties, At354, a salt tolerant parent and Bg352, a salt susceptible parent aiming at identifying salinity tolerant QTLs ...

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