Kevin Ng Kit Siong

Scopus Publications

A Cross-Climate Comparison of Molecular Phenology in Three Tropical and Temperate Trees
Atsuko Miyawaki‐Kuwakado, Nakata Taichi, Yuka Ikezaki, Naoki Tani, Yoshiko Kosugi, Kevin Kit Siong Ng, Soon Leong Lee, Akiko Satake
Plant Environment Interactions, 2026
Latitudinal gradients in temperature seasonality shape the evolution of thermal tolerance and acclimation capacity in organisms. According to Janzen's climate variability hypothesis, tropical species experiencing stable temperatures evolve narrower thermal niches than temperate counterparts. To test whether this principle extends to gene expression dynamics, we compared annual transcriptome profiles of the tropical tree Rubroshorea leprosula and the temperate evergreen trees Lithocarpus edulis and Quercus glauca under natural field conditions. Time‐series RNA‐seq analyses revealed that R. leprosula exhibited sporadic transcriptional shifts triggered by slight cooling events (minimum temperatures of 21°C–22°C), whereas the temperate species showed clear annual cycles characterized by winter‐specific expression patterns. Mild temperature decline in the tropical tree triggered widespread down‐regulation of photosynthesis‐related genes and activation of stress‐response and jasmonate‐associated signaling pathways, suggesting coordinated responses even to mild temperature declines. Cross‐species comparison of 3793 single‐copy orthologs showed that the sensitivity to temperature and dynamic range of gene expression were substantially larger relative to the narrow dynamic range of temperature in the tropics, indicating amplified transcriptional responses per unit of temperature variation. Conversely, temperate species displayed broad but proportionate transcriptomic shifts that paralleled large seasonal temperature fluctuations. These results demonstrate that transcriptional sensitivity to temperature is exaggerated in tropical species and buffered in temperate ones, extending Janzen's climate variability hypothesis from physiological tolerance to its molecular basis.
SEXUAL SYSTEM OF EURYCOMA LONGIFOLIA JACK (SIMAROUBACEAE)
Ng KKS, S Muhammad Azlan, NR Ahmad Farhan, LH Tnah, Ng CH, CT Lee, SL Lee
Journal of Tropical Forest Science, 2026
Hermaphroditism is common in flowering plants, but the presence of unisexual flowers across many taxa, coupled with the combined influence of genetic and environmental factors, makes determining sexual systems challenging. Specifically, androdioecy, where both male and hermaphroditic individuals coexist in the same population, has often been confused with gender diphasy, a strategy in which plants alter their sex expression between seasons. In this study, we investigated the reproductive function of male and hermaphroditic flowers in Eurycoma longifolia (Simaroubaceae) to clarify its sexual system and assess whether it exhibits gender diphasy. Our findings revealed that, while male flowers were present in a notable proportion of individuals relative to hermaphrodites, they also offer significant reproductive advantage in terms of pollen contribution for siring success. Furthermore, E. longifolia displayed low self-pollination rate suggesting predominant outcrossing. The occurrences of sex changes in three individuals in the 2024 flowering season suggests that E. longifolia may not be an androdioecious species, but a possible rare example of gender diphasy.
DNA profile database of Koompassia malaccensis in Malaysia and its application in forensic investigation
C. Lee, C. Ng, L. Tnah, K. Ng, B. Diway, Eyen Khoo, S. Lee
Scientific Reports, 2025
DNA profiling has been an important tool in human forensic for almost four decades, revolutionising criminal investigations. In recent years, it has also been utilised in timber identification and geographical traceability of stolen logs, with notable increase in forensic DNA analysis related to forest crimes, driven by the growing concerns over illegal logging and forest conservation. In this study, DNA profile database for a tropical timber species, Koompassia malaccensis was established, with a total of 1465 samples from 56 locations across Malaysia genotyped using nine short tandem repeat (STR) markers. Based on the results of cluster analyses, the STR database was partitioned into WM (West Malaysia), EM (East Malaysia) and PS (Peat Swamp) Database. Thereafter, each regional/ecological database was characterised for forensic parameters and allele frequencies. Due to weak population differentiation, the percentage of individuals correctly assigned to the population of origin was low. However, the assignment tests to the region of origin were highly accurate (mean = 99.6%). The STR database is robust and has been used to assist the enforcement agencies in the investigation of forest crimes involving K. malaccensis. A case study is presented to demonstrate its application for individual identification in forensic context.
INTEGRATING SSRS AND GENOME-WIDE SNPS TO ASSESS GENETIC DIVERSITY AND POPULATION STRUCTURE OF RUBROSHOREA LEPROSULA FOR CONSERVATION
A Nur-Nabilah, KKS Ng, SL Lee, CH Ng, CT Lee, LH Tnah, Mohamed-Hussein Zeti-Azura
Journal of Tropical Forest Science, 2025
Assessing genetic diversity and population structure with multiple marker systems provides critical insights for the conservation and sustainable management of tropical tree species. We applied simple sequence repeats (SSRs) and genome-wide single nucleotide polymorphisms (SNPs) to characterise genetic variation in Rubroshorea leprosula, a widely distributed dipterocarp in Southeast Asia. SSRs revealed higher allelic richness and heterozygosity, consistent with their multi-allelic nature and high mutation rates, whereas SNPs produced more conservative but genome-wide estimates of diversity. SNP analyses indicated consistently negative inbreeding coefficients and relatively high nucleotide diversity (π = 0.008–0.010), suggesting substantial standing variation and strong adaptive potential. Population differentiation indicates a higher value with SSRs (FST = 0.061) than with SNPs (FST = 0.027), reflecting the ability of SSRs to detect finer-scale versus the genome-wide connectivity captured by SNPs. Both marker systems consistently identified two major genetic clusters aligned with a north–south division across Peninsular Malaysia, with admixture indicating historical or ongoing gene flow. A localised inbreeding signal was detected in the Belum–Temenggor complex, highlighting populations at elevated risk under fragmentation. Together, these results demonstrate the complementary strengths of SSRs for detecting rare alleles and local differentiation, and SNPs for capturing broad genomic patterns. Integrating both marker systems strengthens conservation planning by informing strategies for maintaining connectivity, and guiding conservation effort to safeguard the adaptive capacity and genetic potential of R. leprosula.
Predicting Climatic Limits Along a Rainfall Gradient of Dipterocarp Species Based on Leaf Turgor Loss Point
Kiyosada Kawai, Kevin Kit Siong Ng, Soon Leong Lee
Biotropica, 2025
Drought tolerance is an integral determinant of drought survival in trees; thus, an accurate and rapid assessment of drought tolerance can lead to improved prediction of forest responses to droughts. The osmometer method enables the rapid determination of the leaf water potential at turgor loss (πtlp), a key parameter of drought tolerance, from the osmotic potential at full turgor (πsat). However, despite its wide applications, there have been few validations in ever‐wet tropical rainforests. Here, we assessed the efficacy of the osmometer method in dipterocarps, a dominant tree group in SE Asia in ever‐wet Malaysia, and examined the linkage between πtlp and distribution along a rainfall gradient. The πtlp determined using the conventional method was strongly and linearly correlated with the πsat determined using an osmometer. The coefficients of our model were statistically identical to those previously represented, but with a slightly larger intercept (0.21 MPa). Species with more negative πtlp were distributed in drier habitats, with a relatively larger variation in πtlp for species confined to ever‐wet climates than for those occurring in ever‐wet and seasonally dry climates. Some leaf traits, individual leaf area and dry matter content, were associated with πtlp, but these traits alone could not predict species distribution. We demonstrated the robustness of the osmometer method in ever‐wet tropical rainforest species and that πtlp is associated with current distribution along large‐scale moisture availabilities.
Genetic insights: integrating DNA barcoding with taxonomy in the study of Baccaurea (Phyllanthaceae)
Lee Hong Tnah, Nuri Rasli Ahmad-Farhan, Alias Nur-Nabilah, Pei Sin Soo, Zakaria Hazwani-Humaira', Kevin Kit Siong Ng, Chai Ting Lee, Chin Hong Ng, Soon Leong Lee
Genome, 2025
Traditional taxonomic revisions based on macromorphological and leaf anatomical traits may have limitations in accurately distinguishing certain species within the genus. To improve taxonomic clarity, this study applied DNA barcoding to enhance the understanding of the taxonomy and phylogeny of Baccaurea Lour., a plant genus widely utilized for food, medicine, and building materials. DNA barcode regions, including rbcL, ITS2, and trnH- psbA, were used to analyze 64 samples representing 19 Baccaurea species. Using similarity Basic Local Alignment Search Tool and phylogenetic tree inference, we determined the discriminatory efficiencies of rbcL, ITS2, trnH -psbA, and their combinations rbcL + ITS2 and rbcL + ITS2 + trnH- psbA as 21.1%, 89.5%, 87.5%, 89.5%, and 89.5%, respectively. The Neighbor-Joining tree revealed well-defined, monophyletic species clusters that largely align with phylogenetic positions based on macromorphological features. Notably, our results indicate that Baccaurea parviflora and the synonymized Baccaurea scortechinii are distinct species, recommending the re-establishment of B. scortechinii as a separate species. DNA barcoding is useful in delineating species boundaries, facilitating routine specimen identification, and flagging atypical samples for detailed examination.
Genetic diversity and population structure of Rubroshorea curtisii, a hill dipterocarp species: implications for conservation
Chin Hong Ng, Kevin Kit Siong Ng, Soon Leong Lee, Nur Nabilah Alias, Hazwani Humaira’ Zakaria, Lee Hong Tnah, Chai Ting Lee, Nurul-Farhanah Zakaria, Khairunnisa M. Mamat
Tree Genetics and Genomes, 2024
DNA barcode identification of cultivated and wild tropical fruit species
Lee Hong Tnah, Soon Leong Lee, Chai Ting Lee, Kevin Kit Siong Ng, Chin Hong Ng, Ngah Zawiah
3 Biotech, 2024
HPLC-PDA METHOD FOR THE QUANTIFICATION OF MITRAGYNINE IN FRESH KRATOM (MITRAGYNA SPECIOSA) LEAF
MR Norliana-Izzati, CT Lee, A Fauziah, A Zunoliza, SK Ling, A Mohd-Hafidz-Hadi, KKS Ng, CH Ng, LH Tnah, CL Ng, H-H Goh, SL Lee
Journal of Tropical Forest Science, 2024
Growth performance and scale insect infestation of Shorea leprosula in a common garden experimental plot
Chin Hong Ng, Kevin Kit Siong Ng, Soon Leong Lee, Rempei Suwa, Chai Ting Lee, Lee Hong Tnah
Journal of Forestry Research, 2023
Many tree planting programmes have long been initiated to increase forest cover to mitigate the effects of global climate change. Successful planting requires careful planning at the project level, including using suitable species with favourable traits. However, there is a paucity of improvement data for tropical tree species. An experimental common garden of Shorea leprosula was established to study traits related to growth performance which are key factors in planting success. Seedlings of S. leprosula were collected from nine geographical forest reserves. To study the effects of genetic variation, seedlings were planted in a common environment following a randomized complete block design. From performance data collected 2017‒2019, one population showed the highest coefficient for relative height growth, significantly higher than most of the other populations. Interestingly, this population from Beserah also exhibited the lowest coefficient for scale insect infestation. This study provides preliminary results on growth performance and susceptibility to scale insect infestation in S. leprosula and the first common garden experiment site conducted on dipterocarp species. It lays a foundation for future genome-wide studies.
Tracing the geographic origin of planted tropical timber Neobalanocarpus heimii (chengal) with DNA approach
Lee Hong Tnah, Chai Ting Lee, Chin Hong Ng, Kevin Kit Siong Ng, Zakaria Nurul Farhanah, Soon Leong Lee
Conservation Genetics Resources, 2022
DNA databases of an important tropical timber tree species Shorea leprosula (Dipterocarpaceae) for forensic timber identification
Chin Hong Ng, Kevin Kit Siong Ng, Soon Leong Lee, Nurul-Farhanah Zakaria, Chai Ting Lee, Lee Hong Tnah
Scientific Reports, 2022
DNA databases of a CITES listed species Aquilaria malaccensis (Thymelaeaceae) as the tracking tools for forensic identification and chain of custody certification
Soon Leong Lee, Nurul-Farhanah Zakaria, Lee Hong Tnah, Chin Hong Ng, Kevin Kit Siong Ng, Chai Ting Lee, Kah Hoo Lau, Lillian Swee Lian Chua
Forensic Science International Genetics, 2022
Genetic structure of an important widely distributed tropical forest tree, Shorea parvifolia, in Southeast Asia
Masato Ohtani, Naoki Tani, Saneyoshi Ueno, Kentaro Uchiyama, Toshiaki Kondo, Soon Leong Lee, Kevin Kit Siong Ng, Norwati Muhammad, Reiner Finkeldey, Oliver Gailing, Mohamad Na’iem, Sapto Indrioko, Widiyatno, Iskandar Z. Siregar, Koichi Kamiya, Ko Harada, Bibian Diway, Yoshihiko Tsumura
Tree Genetics and Genomes, 2021
The genome of Shorea leprosula (Dipterocarpaceae) highlights the ecological relevance of drought in aseasonal tropical rainforests
Kevin Kit Siong Ng, Masaki J. Kobayashi, Jeffrey A. Fawcett, Masaomi Hatakeyama, Timothy Paape, Chin Hong Ng, Choon Cheng Ang, Lee Hong Tnah, Chai Ting Lee, Tomoaki Nishiyama, Jun Sese, Michael J. O’Brien, Dario Copetti, Mohd Noor Mat Isa, Robert Cyril Ong, Mahardika Putra, Iskandar Z. Siregar, Sapto Indrioko, Yoshiko Kosugi, Ayako Izuno, Yuji Isagi, Soon Leong Lee, Kentaro K. Shimizu
Communications Biology, 2021
Microsatellite analysis of Rafflesia cantleyi from the Rafflesia Conservation and Interpretive Centre, Bersia Timur and Gerik Forest Reserve, Perak, Malaysia
C T Lee, L H Tnah, Z H Humaira’, Z Nurul-Farhanah, S L Lee, K K S Ng, C H Ng, A Nur-Nabilah, B Norlia, A Noorsiha, M Y Siti-Munirah
Iop Conference Series Earth and Environmental Science, 2021
Effect of Leaves on the Regulation of Internode Elongation in a Tropical Evergreen Tree, Shorea leprosula
Masaki J. KOBAYASHI, Kevin Kit Siong NG, Soon Leong LEE, Norwati MUHAMMAD, Naoki TANI
Japan Agricultural Research Quarterly, 2021
Low genetic diversity indicating the threatened status of Rhizophora apiculata (Rhizophoraceae) in Malaysia: declined evolution meets habitat destruction
Amelia Azman, Kevin-Kit-Siong Ng, Chin-Hong Ng, Chai-Ting Lee, Lee-Hong Tnah, Nurul-Farhanah Zakaria, Suhaila Mahruji, Khairuddin Perdan, Md-Zaidey Abdul-Kadir, Acga Cheng, Soon-Leong Lee
Scientific Reports, 2020
Temperature is a regulator of leaf production in the family Dipterocarpaceae of equatorial Southeast Asia
Masaki J. Kobayashi, Kevin Kit Siong Ng, Soon Leong Lee, Norwati Muhammad, Naoki Tani
American Journal of Botany, 2020
Tracing the geographic origin of merbau (Intsia palembanica miq.) in century old planting trials
Chin Ng, Kevin Ng, Chai Lee, Lee Tnah, Nurul Zakaria, Noorsiha Ayop, Soon Lee
Forests, 2020
Potential of Genome-Wide association studies and Genomic Selection to improve productivity and quality of commercial timber species in tropical rainforest, a case study of Shorea platyclados
Sawitri, Naoki Tani, Mohammad Na’iem, Widiyatno, Sapto Indrioko, Kentaro Uchiyama, Rempei Suwa, Kevin Kit Siong Ng, Soon Leong Lee, Yoshihiko Tsumura
Forests, 2020
A geographical traceability system for Merbau (Intsia palembanica Miq.), an important timber species from peninsular Malaysia
Chin Hong Ng, Kevin Kit Siong Ng, Soon Leong Lee, Lee Hong Tnah, Chai Ting Lee, Nurul-Farhanah Zakaria
Forensic Science International Genetics, 2020
Confirmation of natural hybrid of Shorea leprosula and S. Curtisii in Pasir Panjang forest reserve, Negeri Sembilan, Malaysia
KKS Ng, SL Lee, LH Tnah, CH Ng, CT Lee, Z Nurul-Farhanah, A Amelia
Journal of Tropical Forest Science, 2020
Genetic diversity and demographic history of an upper hill dipterocarp (shorea platyclados): Implications for conservation
Chin-Hong Ng, Soon-Leong Lee, Lee-Hong Tnah, Kevin K S Ng, Chai-Ting Lee, Bibian Diway, Eyen Khoo
Journal of Heredity, 2019
DNA barcode database of common herbal plants in the tropics: a resource for herbal product authentication
L.H. Tnah, S.L. Lee, A.L. Tan, C.T. Lee, K.K.S. Ng, C.H. Ng, Z. Nurul Farhanah
Food Control, 2019
Are patterns of fine-scale spatial genetic structure consistent between sites within tropical tree species?
James R. Smith, Jaboury Ghazoul, David F. R. P. Burslem, Akira Itoh, Eyen Khoo, Soon Leong Lee, Colin R. Maycock, Satoshi Nanami, Kevin Kit Siong Ng, Chris J. Kettle
Plos One, 2018
Isolation and characterisation of SSR markers in tongkat ali (Eurycoma longifolia) using next-generation sequencing approach
Lee CT, Norlia B, Tnah LH, Lee SL, Ng CH, Ng KKS, Nor-Hasnida H, Nurul-Farhanah Z, Suryani CS, Nur-Nabilah A
Journal of Tropical Forest Science, 2018
Genome size variation and evolution in Dipterocarpaceae
Chin Hong Ng, Soon Leong Lee, Lee Hong Tnah, Kevin Kit Siong Ng, Chai Ting Lee, Maria Madon
Plant Ecology and Diversity, 2016
Genetic diversity of two tropical tree species of the Dipterocarpaceae following logging and restoration in Borneo: high genetic diversity in plots with high species diversity
Cheng Choon Ang, Michael J. O’Brien, Kevin Kit Siong Ng, Ping Chin Lee, Andy Hector, Bernhard Schmid, Kentaro K. Shimizu
Plant Ecology and Diversity, 2016
Complex pollination of a tropical Asian rainforest canopy tree by flower-feeding Thrips and Thrips-Feeding predators
Toshiaki Kondo, Sen Nishimura, Naoki Tani, Kevin Kit Siong Ng, Soon Leong Lee, Norwati Muhammad, Toshinori Okuda, Yoshihiko Tsumura, Yuji Isagi
American Journal of Botany, 2016
Intraspecific classification of Ficus deltoidea Jack subsp. deltoidea (Moraceae) in Peninsular Malaysia based on morphological and molecular variations
Lee Hong Tnah, Soon Leong Lee, Ai Lee Tan, Chai Ting Lee, Kevin Kit Siong Ng, Chin Hong Ng
Biochemical Systematics and Ecology, 2016
Forensic timber identification: A case study of a CITES listed species, Gonystylus bancanus (Thymelaeaceae)
Kevin Kit Siong Ng, Soon Leong Lee, Lee Hong Tnah, Zakaria Nurul-Farhanah, Chin Hong Ng, Chai Ting Lee, Naoki Tani, Bibian Diway, Pei Sing Lai, Eyen Khoo
Forensic Science International Genetics, 2016
Spatial studies of Shorea parvifolia spp. parvifolia (Dipterocarpaceae) in a lowland and hill dipterocarp forest
Journal of Tropical Forest Science, 2016
Selective logging simulations and male fecundity variation support customisation of management regimes for specific groups of dipterocarp species in Peninsular Malaysia
Journal of Tropical Forest Science, 2016
Development of microsatellites in Labisia Pumila (MYRSINACEAE), an economically important Malaysian herb
Lee Hong Tnah, Chai Ting Lee, Soon Leong Lee, Chin Hong Ng, Kevin Kit Siong Ng
Applications in Plant Sciences, 2014
Development and characterization of microsatellites of an important medicinal plant Orthosiphon stamineus (misai kucing)
Lee Hong Tnah, Chai Ting Lee, Soon Leong Lee, Chin Hong Ng, Kevin Kit Siong Ng
Biochemical Systematics and Ecology, 2014
Isolation and characterization of 16 microsatellite markers in Intsia palembanica, a high-value tropical hardwood species
Chai Ting Lee, Soon Leong Lee, Lee Hong Tnah, Kevin Kit Siong Ng, Chin Hong Ng, Shawn Cheng, Naoki Tani
Conservation Genetics Resources, 2014
Conservation management of rare and predominantly selfing tropical trees: An example using Hopea bilitonensis (Dipterocarpaceae)
Soon Leong Lee, Lillian S. L. Chua, Kevin K. S. Ng, Mamat Hamidah, Chai Ting Lee, Chin Hong Ng, Lee Hong Tnah, Lay Thong Hong
Biodiversity and Conservation, 2013
Nuclear and chloroplast DNA phylogeography reveals Pleistocene divergence and subsequent secondary contact of two genetic lineages of the tropical rainforest tree species Shorea leprosula (Dipterocarpaceae) in South-East Asia
Masato Ohtani, Toshiaki Kondo, Naoki Tani, Saneyoshi Ueno, Leong S. Lee, Kevin K. S. Ng, Norwati Muhammad, Reiner Finkeldey, Mohamad Na'iem, Sapto Indrioko, Koichi Kamiya, Ko Harada, Bibian Diway, Eyen Khoo, Kensuke Kawamura, Yoshihiko Tsumura
Molecular Ecology, 2013
Phylogeographical pattern and evolutionary history of an important peninsular malaysian timber species, Neobalanocarpus heimii (Dipterocarpaceae)
L. H. Tnah, S. L. Lee, K. K. S. Ng, C. T. Lee, S. Bhassu, R. Y. Othman
Journal of Heredity, 2013
Establishment of full-sib families in Shorea platyclados using paternity analysis: An alternative to controlled pollination
Chin-Hong Ng, Soon-Leong Lee, Kevin Kit-Siong Ng, Chai-Ting Lee, Norwati Muhammad
Journal of Forest Research, 2012
Isolation and characterization of microsatellite markers for an important tropical tree, Aquilaria malaccensis (Thymelaeaceae)
Lee Hong Tnah, Chai Ting Lee, Soon Leong Lee, Kevin Kit Siong Ng, Chin Hong Ng, Zakaria Nurul‐Farhanah, Kah Hoo Lau, Lillian Swee Lian Chua
American Journal of Botany, 2012
DNA extraction from dry wood of Neobalanocarpus heimii (Dipterocarpaceae) for forensic DNA profiling and timber tracking
Lee Hong Tnah, Soon Leong Lee, Kevin Kit Siong Ng, Subha Bhassu, Rofina Yasmin Othman
Wood Science and Technology, 2012
Estimation of outcrossing rates in Koompassia malaccensis from an open-pollinated population in Peninsular Malaysia using microsatellite markers
Journal of Tropical Forest Science, 2011
Evidence for a higher number of species of odontotermes (isoptera) than currently known from peninsular malaysia from mitochondrial DNA phylogenies
Shawn Cheng, Laurence G. Kirton, Jothi M. Panandam, Siti S. Siraj, Kevin Kit-Siong Ng, Soon-Guan Tan
Plos One, 2011
Microsatellite markers of an important medicinal plant, Eurycoma longifolia (Simaroubaceae), for DNA profiling
Lee Hong Tnah, Chai Ting Lee, Soon Leong Lee, Kevin Kit Siong Ng, Chin Hong Ng, Siaw San Hwang
American Journal of Botany, 2011
Molecular database for classifying Shorea species (Dipterocarpaceae) and techniques for checking the legitimacy of timber and wood products
Yoshihiko Tsumura, Tomoyuki Kado, Kazumasa Yoshida, Hisashi Abe, Masato Ohtani, Yuriko Taguchi, Yoko Fukue, Naoki Tani, Saneyoshi Ueno, Kensuke Yoshimura, Koichi Kamiya, Ko Harada, Yayoi Takeuchi, Bibian Diway, Reiner Finkeldey, Mohamad Na’iem, Sapto Indrioko, Kevin Kit Siong Ng, Norwati Muhammad, Soon Leong Lee
Journal of Plant Research, 2011
Highly variable str markers of neobalanocarpus heimii (Dipterocarpaceae) for forensic dna profiling
Journal of Tropical Forest Science, 2010
Forensic DNA profiling of tropical timber species in Peninsular Malaysia
Lee Hong Tnah, Soon Leong Lee, Kevin Kit Siong Ng, Qamaruz-Zaman Faridah, Ibrahim Faridah-Hanum
Forest Ecology and Management, 2010
Development of microsatellite markers for shorea platyclados (dipterocarpaceae)
Chin Hong Ng, Soon Leong Lee, Kevin Kit Siong Ng, Norwati Muhammad, Chai Ting Lee
Conservation Genetics Resources, 2009
Microsatellite markers of Gonystylus bancanus (Thymelaeaceae) for population genetic studies and DNA fingerprinting
Kevin Kit Siong Ng, Soon Leong Lee, Chin Hong Ng, Lee Hong Tnah, Chai Ting Lee, Naoki Tani
Conservation Genetics Resources, 2009
Paternity analysis-based inference of pollen dispersal patterns, male fecundity variation, and influence of flowering tree density and general flowering magnitude in two dipterocarp species
Naoki Tani, Yoshihiko Tsumura, Tomoyuki Kado, Yuriko Taguchi, Soon Leong Lee, Norwati Muhammad, Kevin Kit Siong Ng, Shinya Numata, Sen Nishimura, Akihiro Konuma, Toshinori Okuda
Annals of Botany, 2009
Geographical traceability of an important tropical timber (Neobalanocarpus heimii) inferred from chloroplast DNA
Lee Hong Tnah, Soon Leong Lee, Kevin K.S. Ng, Naoki Tani, Subha Bhassu, Rofina Yasmin Othman
Forest Ecology and Management, 2009
Mating system and seed variation of Acacia hybrid (A. mangium × A. auriculiformis)
Chin-Hong Ng, Soon-Leong Lee, Kevin Kit-Siong Ng, Norwati Muhammad, Wickneswari Ratnam
Journal of Genetics, 2009
Impact of selective logging on genetic diversity of two tropical tree species with contrasting breeding systems using direct comparison and simulation methods
Kevin Kit Siong Ng, Soon Leong Lee, Saneyoshi Ueno
Forest Ecology and Management, 2009
Short note: Internal size standard for microsatellite genotyping
Chin Hong Ng, S. L. Lee, K. K. S. Ng
Silvae Genetica, 2009
Expressed sequence tag-simple sequence repeats isolated from Shorea leprosula and their transferability to 36 species within the Dipterocarpaceae
KEVIN KIT SIONG NG, SOON LEONG LEE, YOSHIHIKO TSUMURA, SANEYOSHI UENO, CHIN HONG NG, CHAI TING LEE
Molecular Ecology Resources, 2009
Ti: Genetic diversity assessment of Koompassia malaccensis
Pertanika Journal of Tropical Agricultural Science, 2008
Effects of flowering tree density on the mating system and gene flow in Shorea leprosula (Dipterocarpaceae) in Peninsular Malaysia
Yoko Fukue, Tomoyuki Kado, Soon Leong Lee, Kevin Kit Siong Ng, Norwati Muhammad, Yoshihiko Tsumura
Journal of Plant Research, 2007
Allozyme diversity of koompassia malaccensis (leguminosae) in Peninsular Malaysia
Journal of Tropical Forest Science, 2007
Isolation and characterization of microsatellite markers in Koompassia malaccensis (Leguminosae), an important tropical timber species
C. T. LEE, S. L. LEE, Q. Z. FARIDAH, S. S. SIRAJ, K. K. S. NG, B. NORLIA, M. N. MAT‐ISA
Molecular Ecology Notes, 2006
Spatial structure and genetic diversity of three tropical tree species with different habitat preferences within a natural forest
Kevin Kit Siong Ng, Soon Leong Lee, Leng Guan Saw, Joshua B. Plotkin, Chong Lek Koh
Tree Genetics and Genomes, 2006
Linking the gaps between conservation research and conservation management of rare dipterocarps: A case study of Shorea lumutensis
Soon Leong Lee, Kevin K.S. Ng, Leng Guan Saw, Chai Ting Lee, Norwati Muhammad, Naoki Tani, Yoshihiko Tsumura, Jarkko Koskela
Biological Conservation, 2006
Isolation of 15 polymorphic microsatellite loci in Acacia hybrid (Acacia mangium x Acacia auriculiformis)
C. H. NG, S. C. KOH, S. L. LEE, K. K. S. NG, A. MARK, M. NORWATI, R. WICKNESWARI
Molecular Ecology Notes, 2005
Isolation and characterization of 20 microsatellite loci for an important tropical tree Shorea leprosula (Dipterocarpaceae) and their applicability to S. parvifolia
S. L. Lee, N. Tani, K. K. S. Ng, Y. Tsumura
Molecular Ecology Notes, 2004
Characterization of 15 polymorphic microsatellite loci in an endangered tropical tree Hopea bilitonensis (Dipterocarpaceae) in Peninsular Malaysia
S. L. Lee, N. Tani, K. K. S. Ng, Y. Tsumura
Molecular Ecology Notes, 2004
Spatial structure and genetic diversity of two tropical tree species with contrasting breeding systems and different ploidy levels
Kevin K. S. Ng, S. L. Lee, C. L. Koh
Molecular Ecology, 2004
Mating system in a planted population of Shorea macrophylla (Dipterocarpaceae)
Journal of Tropical Forest Science, 2002
Population genetics of Intsia palembanica (Leguminosae) and genetic conservation of Virgin Jungle Reserves in Peninsular Malaysia
Soon‐Leong Lee, Kevin K.‐S. Ng, Leng‐Guan Saw, Adnan Norwati, M. H. Siti Salwana, Chai‐Ting Lee, Muhammad Norwati
American Journal of Botany, 2002
Early growth performance of five half-sib families of Hopea odorata roxb. (Dipterocarpaceae) and their multiple seedlings planted in Bukit Hari Forest Reserve
Journal of Tropical Forest Science, 2000

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