Kyu-Suk Kang

Kyu-Suk Kang
Seoul National University | SNU · Department of Forest Sciences

PhD

About

80
Publications
12,746
Reads
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1,010
Citations
Citations since 2016
26 Research Items
519 Citations
2016201720182019202020212022020406080100
2016201720182019202020212022020406080100
2016201720182019202020212022020406080100
2016201720182019202020212022020406080100
Additional affiliations
September 2019 - August 2020
University of British Columbia - Vancouver
Position
  • Visiting faculty
September 2013 - present
Seoul National University
Position
  • Professor
May 2008 - October 2008
University of British Columbia - Vancouver
Position
  • Visiting Scientist
Education
April 1997 - June 2001
Swedish University of Agricultural Sciences
Field of study
  • Forest genetics and tree breeding
September 1990 - August 1992
Seoul National University
Field of study
  • Forest Genetics
March 1984 - February 1992
Seoul National University
Field of study
  • Forestry

Publications

Publications (80)
Article
Full-text available
Background Larix kaempferi is one of the major timber species in Northeast Asia. Demand for the reforestation of the species is rising in South Korea due to an increase in large timber production and utilization. However, progeny trials for the species have not been explored, making it challenging to foster advanced generations of tree improvement....
Book
Full-text available
Seed Orchards (Establishment, Management & Genetics)
Article
Full-text available
Tamarind (Tamarindus indica L.) is one of the multipurpose tree species distributed in the tropical and subtropical climates. It is an important fruit yielding tree that supports the livelihood and has high social and cultural values for rural communities. The vegetative, reproductive, qualitative, and quantitative traits of tamarind vary widely. C...
Preprint
Full-text available
Background: Larix kaempferi is one of the major timber species in Northeast Asia. Demand for the reforestation of the species is rising in South Korea due to an increase in large timber production and utilization. However, progeny trials for the species have not been explored, making it challenging to foster advanced generations of tree improvement...
Article
Full-text available
Tilia species are valuable woody species due to their beautiful shape and role as honey trees. Somatic embryogenesis can be an alternative method for mass propagation of T. amurensis. However, the molecular mechanisms of T. amurensis somatic embryogenesis are yet to be known. Here, we conducted comparative transcriptional analysis during somatic em...
Article
Full-text available
Seed stand is a natural forest population that is one of the essential seed sources for global seed supply. Individual fertility is an ability to produce progeny to next generation. Prediction of fertility variation is useful for seed quality, ecosystem management and gene conservation. Fertility variation and gene diversity in seed stands of Tauru...
Article
Tamarind (Tamarindus indica L.) is one of the multipurpose tree species distributed in the tropical and sub-tropical climates. It is an important fruit yielding tree that supports the livelihood and has high social and cultural values for rural communities. The vegetative, reproductive, qualitative, and quantitative traits of tamarind vary widely....
Article
Full-text available
Growth traits and genetic diversity of 23 provenances of Quercus rubra introduced from North America were analyzed in a provenance trial established with a randomized block design in Hwaseong, Gyeonggi, South Korea in 1993. Growth variables and survival at age 25 were compared with results from early stages. Height, DBH, volume and stem straightnes...
Article
Pinus densiflora f. multicaulis is a rare and unusual form of genus Pinus. It has excellent ornamental values due to many trunks from its root collar, and produces female, male, and bisexual strobili on thes ame tree. However, there is limited study whether the bisexual strobili are functional, mature lateral conesproduce filled seeds, and the seed...
Article
Full-text available
Background: Gender and fertility variation have an impact on mating dynamics in a population because they affect the gene exchange among parental members and the genetic composition of the resultant seed crops. Fertility is the proportional gametic contribution of parents to their progeny. An effective number of parents, derivative of effective po...
Article
Studies on forest tree breeding (FTB) in South Korea started in the 1950s and have achieved remarkable outcomes through various techniques and methods such as selective breeding, cross breeding, introduction breeding, and biotechnology. Despite these outstanding achievements, no attempt has been made to objectively and quantitatively evaluate the r...
Preprint
Background Seed stand is one of the important seed sources that is essential for global seed production programs. The primary objective of seed stands is to produce seeds as fast as possible. Characteristics of seed stand seeds depend mainly on stand quality, fertility variation and mating system. Individual fertility is an ability to produce proge...
Preprint
Full-text available
Background: Gender and fertility variation have an impact on mating dynamics in a population because they affect the gene exchange among parental members and the genetic composition of the resultant seed crops. Fertility is the proportional gametic contribution of parents to their progeny. An effective number of parents, derivative of effective pop...
Preprint
Full-text available
Background: Gender and fertility variation have an impact on mating dynamics in a population because they affect the gene exchange among parental members and the genetic composition of the resultant seed crops. Fertility is the proportional gametic contribution of parents to their progeny. An effective number of parents, derivative of effective pop...
Preprint
Full-text available
Background: Gender and fertility variation have an impact on mating dynamics in a population because they affect the gene exchange among parental members and the genetic composition of the resultant seed crops. Fertility is the proportional gametic contribution of parents to their progeny. An effective number of parents, derivative of effective pop...
Article
Full-text available
Key message Downregulating PagSAP1 expression increases salt tolerance in poplar and leads to the alterations in the regulation of genes involved in maintaining cellular ionic homeostasis. Abstract Plants have evolved defense mechanisms to cope with unfavorable climate conditions such as salinity, drought, and extreme temperatures. Such adaptive s...
Article
Full-text available
To reveal the genetic mechanisms behind drought tolerance, we attempted to identify the drought-responsive genes in Populus tremula var. davidiana (Dode) C.K. Schneid. and eight other species of Populus. Nine drought-responsive genes were assayed by single nucleotide polymorphism (SNP) genotyping using TaqMan probe-based real-time PCR. A total of 3...
Article
For conservation of biodiversity, we designate and manage the major areas that are habitats of organisms as ecosystem protected areas. It is necessary to evaluate the biodiversity of protected areas relatively in order to establish strategies to protect and secure the biodiversity of protected areas. In this study, we selected evaluation indicators...
Article
RAPD (randomly amplified polymorphic DNA) markers were employed to characterize polymorphisms among 5 provenances of Acacia leucophloea and to detect genetic relatedness of the species with 6 other acacias (A. holosericea, A. auriculiformis, A. mangium, A. dealbata, A. ferruginea, and A. nilotica) widely grown in India. Of 194 markers scored for th...
Article
Full-text available
Growth performance and heritability were studied in a progeny trial of Acacia crassicarpa in Chacheongsao province, eastern Thailand in order to provide information on suitable families for seed improvement and production. A randomized complete block design (originally 8 blocks, 80 family plots/block, 4 trees/plot) of the best 80 half-sib families...
Article
The genetic gain and gene diversity of seed crops from a 1.5-generation clonal seed orchard of Pinus koraiensis Siebold & Zucc. were estimated under consideration of parental genetic values and fecundity variation. Fecundity variation among clones was estimated for 5 consecutive years (2010–2014) as the sibling coefficient, which was drawn from clo...
Article
Growth characteristics and fertility variations were evaluated at four natural stands of tropical arid zone species, A. leucophloea in southern India. Three stands (TNL 1, TNL 2 and PDM) were situated in dry upland regions while one stand (RKP) was at waterlogged site. The tree height and girth at breast height did not vary between stands in two ye...
Article
Genetic gain and diversity were estimated based on three simulated thinning scenarios at various thinning intensities in a breeding seed orchard of Quercus acutissima. The seed orchard was composed of 32 families with 744 individual trees with volume at age 15. The three thinning scenarios were individual thinning (IT) which thinning was based on t...
Article
Growth and reproductive traits were assessed in seed stands of two native Indian tree species Tamarindus indica and Azadirachta indica. Positive correlation between growth (height and GBH) and reproductive traits (male and female contribution) were found in both species. Fertility was estimated from the flower and fruit production of individuals. B...
Article
The fumigant antifungal activities of ajowan (Trachyspermum ammi), and allspice (Pimenta dioica) essential oils and their constituents were tested against three Aspergillus species: A. ochraceus, A. parasiticus, and A. niger. Ajowan essential oil demonstrated a 100% inhibition rate against these three Aspergillus species at an air concentration of...
Article
Full-text available
The effect of light (blue, red, and/or green) generated by light-emitting diodes on shoot regeneration was examined in selected clones, ‘I-476’ and ‘Dorskamp’, of Populus euramericana. We found that a combination of red and blue light produced the highest percentage of shoot regeneration in comparison to monochromic or fluorescent light. Further st...
Article
The fumigant and contact toxicities of 16 Asteraceae plant essential oils and their constituents against adult male and female Blattella germanica were examined. In a fumigant toxicity test, tarragon oil exhibited 100% and 90% fumigant toxicity against adult male German cockroaches at 5 and 2.5 mg/filter paper, respectively. Fumigant toxicities of...
Article
An efficient regeneration protocol for stem disc culture of Populus euramericana, which is important species for bioenergy resource in agroforestry, was established. The number of explants that were obtained and the number of explants that regenerated varied with the genotypes. However, in all the genotypes, stem disc culture produced more regenera...
Article
Full-text available
Drought and salt stresses are major environmental constraints on forest productivity. To identify genes responsible for stress tolerance, we conducted a genome-wide analysis in poplar (Populus alba × Populus glandulosa) leaves exposed to drought and salt (NaCl) stresses. We investigated gene expression at the mRNA level using oligonucleotide microa...
Article
This study investigated the fumigant toxicity of 4 Asteraceae plant essential oils and their constituents against the Japanese termite Reticulitermes speratus Kolbe. Fumigant toxicity varied with plant essential oils or constituents, exposure time, and concentration. Among the tested essential oils, those from Chamaemelum nobile exhibited the stron...
Article
Full-text available
Genetic gain and diversity were estimated based on three simulated thinning scenarios at various thinning intensities in a breeding seed orchard of Quercus acutissima. The seed orchard was composed of 32 families with 744 individual trees with volume at age 15. The three thinning scenarios were individual thinning (IT) which thinning was based on t...
Article
Full-text available
A short rotation coppice (SRC) refers to cultivation systems using fast-growing tree species with the ability to re-sprout from the stump after harvest. Harvest in SRC cultivation occurs in short intervals, 2-6 years, and management practices are more similar to those of agricultural annual crops than to forestry. The SRC for production of biomass...
Article
Elicitors trigger defence responses in plant cells through signal transduction pathways, leading to accumulation of pathogenesis-related (PR) proteins and, eventually, pathogen resistance. To understand defence responses of hybrid poplar (Populus alba × P. tremula var. glandulosa), we isolated and characterized upregulated genes in poplar cells by...
Article
Full-text available
Pinus koraiensis is one of the most important economic species in Korea, which covers about 17% of the total reforestation area. Volume growth, timber quality and nut production have been major target characteristics in the breeding program of P. koraiensis. The main purposes of the present study are to survey the effect of top-pruning for strobili...
Article
This study was conducted to analyze growth characteristics and adaptability of poplar clones under the treatment of liquid pig manure. The average of survival rate was 33% better at control than the treatment under age of 5 years. But, tree height and DBH growth were higher at the treatment than control. Populus euramericana 'Eco28' showed the high...
Article
Full-text available
The numbers of female and male flowers were assessed in a clonal seed orchard of Fraxinus rhynchophylla for four consecutive years from 2004 through 2007. The female and male flowers of the grafts from 48 clones were counted individually over the crown. Fertility variation was calculated by sibling coefficient that is related to the coefficient of...
Article
Full-text available
Early results from a field test of Maesopsis eminii are reported from a progeny test of 100 open-pollinated families of Indonesian seed sources (west Java). Seedling height and diameter at root collar (DRC) were measured in the family tests at 0, 10, and 15 months of age. Age 0 means the measurement just before the planting of the trial. The averag...
Article
Full-text available
The numbers of female and male strobili were assessed for 99 clones in a Pinus densiflora Sieb. et Zucc. seed orchard for four consecutive years. The data showed that differences for the production of both female and male strobili among clones were very large and statistically significant for all years examined. The most abundant quartile of clones...
Article
Acorn production was surveyed for eight consecutive years (2000-2007) in a 94-clone Sawtooth oak (Quercus acutissima) seed orchard established in 1992. Acorn production commenced in 2000 and peaked in 2005 and was characterized by a 3-4 years interval. Sixty out of the orchard's 94 clones were consistent producers across the study period. Acorn pro...
Article
Full-text available
Early results from a field trail of Agathis loranthifolia are reported from a progeny test of 100 open-pollinated families in west Java, Indonesia. The average of height and diameter at root collar (DRC) was 40.18 cm and 0.52 cm at age 15 months. Family survival rate ranged from 86.5% at age 10 months to 81.7% at age 15 months. Family means of 10 b...
Article
Full-text available
Genetic variation associated with Picea jezoensis populations of South Korea was investigated using chloroplast (cp), mitochondrial (mt) and nuclear DNA markers. In South Korea, P. jezoensis is distributed across a very restricted area, being found on the summits of three mountains: Mts. Jiri, Dokyu and Gyebang. Examination of five region restricti...
Article
Full-text available
Morphological characteristics of leaves, trichomes and acorns were investigated in 6-year-old artificial hybrids of Q. aliena Q. mongolica var. crispula and Q. serrata Q. mongolica var. crispula. Leaf shapes of Q. aliena Q. mongolica var. crispula were obovate and resembled to that of Q. aliena. But several characters including the size of leaf and...
Article
Full-text available
The aim of this study was to examine geographic variation to support a genetic resource conservation plan of rare endemic Picea jezoensis (Siebold & Zucc.) Carriere. Three populations of P. jezoensis were analysed using multivariate analysis for 7 characteristics of needle morphology. In the morphological characters, seven characters of needle were...
Article
Full-text available
Genetic quality of plus trees select- ed phenotypically is generally determined by progeny tests in a breeding program. For the progeny test, there are a few limitations; all plus trees are not selected in the same year, seed collection does not occur in the same year due to flowering irregularity, unequal avail- ability of progenies among families...
Article
Full-text available
Male and female strobilus production was assessed annually over a four-year period for a clonal seed orchard of hinoki (Chamaecyparis obtusa Endl.) in Korea. Clonal fertility and fertility variation, expressed by both sibling coefficient and coefficient of variation in strobilus production among 50 orchard clones, were reported. Fertility varied am...
Article
Genetic gain and diversity were estimated in a 13-year old Quercus serrata breeding seed orchard under three selection (rouging) methods. The selections were based on individual selection, family selection, and family plus within family selection. Genetic gain was for stem volume and gene diversity was estimated by status number concept. Both estim...
Article
Full-text available
Clonal differences in fertility (expressed as the number of female and male strobili) were determined for three years (2001, 2005 and 2006) in a clonal seed orchard of Scots pine (Pinus sylvestris). The seed orchard consisted of 29 clones (total of 1,265 ramets), and was established at northern part of Turkey (latitude 40°52'N, longitude 30°42'E, a...
Article
Full-text available
Genetic gain and diversity, expressed by status number, of seed crops from a clonal seed orchard of Pinus thunbergii were estimated considering selection, fertility variation and pollen contamination, and compared for different management alternatives (selective harvest, genetic thinning and combination of both options). Management variables includ...
Article
Clonal differences in fertility (expressed as the number of female and male strobili) were determined for three consecutive years (2002-2004) in a clonal seed orchard of sugi (Cryptomeria japonica D. Don) in Korea. Fertility varied among clones and among years producing three-year averages of 196 and 652 for female and male strobili per ramet, resp...
Article
Genetic gain and diversity (status number) were estimated in a 12-year-old Quercus accutissima seedling seed orchard under three thinning scenarios. These scenarios were based on linear (ranged from the removal of individuals within families to the removal of entire families based on the family genetic values generated from conventional progeny tes...
Article
Full-text available
Fertility (number of strobili) was investigated in six natural populations over three ranges of altitudes (215–960 m) in Brutian pine (Pinus brutia Ten.) for two consecutive years. The fertility and fertility variation varied among populations and years. The average of strobilus production varied between 173 and 269 in female, and between 533 and 1...
Article
Full-text available
Clonal differences in the number of male and female strobili were determined for five consecutive years in a clonal seed orchard of Pinus thunbergii in Korea. The effects of relatedness and clonal differences in reproductive development on gene diversity of seed (in terms of accumulated relatedness by status number) were estimated. While clonal dif...
Article
Full-text available
Two equations were formulated in order to estimate the degree of sexual asymmetry for monoecious species. The concepts of the equations were formulated on the basis of the effective population numbers of female and male parents [i.e, As(v)], and the differences of relative frequency between genders [i.e., As(x)]. These equations were applied to est...
Article
Female, male and total fertility variations were estimated in a base population and a seed orchard derived from the base population in Pinus brutia. Relative status number for gametes (female and male contribution) and zygotes (average of female and male contribution) were estimated based on the fertility variation. Average female and male strobilu...