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Han, Kyeung-Sik,Jung, Jin-Kyo,Park, Kyung-Hee,Lee, Sun-Won,Boo, Kyung-Saeng Korean Society of Applied Entomology 2001 Journal of Asia-Pacific Entomology Vol.4 No.1
Sex pheromone composition was analyzed for the oriental fruit moth(Grapholita molesta), and field trapping studies were also conducted to develop monitoring system with its sex pheromone in Korea. The calling and mating behavior of G. molesta were ween maximally 2 to 1 hr before lights-off and these behavior ceased after lights-off. Analysis of abdominal tip extracts from virgin females of G. molesta revealed 4 compounds, Z8-dodecenyl acetate (Z8-12:Ac), E8-dedecenyl acetate (E8-12:Ac), Z8-dodecenol (Z8-12:OH) and dodecanol (12:OH). In the field trappings, the best capturing activity for G. molesta was observed with the 95:5:1 blend of Z8-12:Ac, E8-12:Ac and Z8-12:OH but 12:OH showed no synergic effect. The most effective amount of sex pheromone blend was 0.5mg for a lure.
Han, Kyeung-Sik,Jung, Jin-Kyo,Park, Kyung-Hee,Lee, Sun-Won,Saeng Boo Korean Society of Applied Entomology 2000 Journal of Asia-Pacific Entomology Vol.3 No.2
Sex pheromone composition, mating behavior, and field trapping were analyzed for the peach fruit moth, Carposina sasakii(Matsumura) to develop a monitoring system with its sex pheromone. The upwind flying response of males to female was the most frequent at 4th to 5th hr after lights-off. The highest mating rate was seen at 5th hr after lights-off. The extract of female abdoominal tip was analyzed with gas chromatography and proved to have two compounds, (Z)-7-eicosen-11-one and (Z)-7-nonadecen-11-one. In field-grapping, however, a lure containing (Z)-7-eicosen-11-one only showed the highest attractivity.
Molecular marker evaluated for heat tolerance in wheat
Jae-Han Son,Kyeung-Hoon Kim,Chon-Sik Kang,Young-Keun Cheong,Jong-Chul Park,Kyong-Ho Kim,Yang-Kil Kim,Young-Jin Oh,Jong-Ho Park,Tae-Hwa Song,Jae-Seong Choi,Bo-Kyeong Kim 한국육종학회 2015 한국육종학회 심포지엄 Vol.2015 No.07
High temperature is one of major environmental stress. Some of molecular markers related heat stress or tolerance have been reported by many researchers. Heat tolerance managing is difficult through the phenotypic selection, so marker assistant selection (MAS) using molecular markers like as RAPD, SSR ect. was tried to selection of useful traits for heat tolerance. Fourteen SSR markers reported by previous research were selected for this research. These markers were linked to important traits including grain filling duration, HIS (Heat susceptibility index) grain filling duration. In this study, we tried to evaluate 14 SSR markers for MAS using 31 useful wheat resources including 24 crossing line from Turkey and six Korean wheat cultivars using 14 SSR markers. The average of the number of alleles and PIC values in this study were 6.14 and 0.63, respectively. Two major clades and six sub clades were grouped by phylogenetic tree using UPGMA program. Six Korean wheat cultivars were distinct from other Turkey resources in the phylogenetic dendrogram. From the results, we expected that these markers were able to adapt to screening wheat genotyping for heat tolerance.
Differences in sex pheromone communication systems of three species in genus Adoxophyes
Chang Yeol Yang,Kyeung Sik Han,Heung Yong Jeon,Taek Jun Kang 한국응용곤충학회 2008 한국응용곤충학회 학술대회논문집 Vol.2008 No.10
We tested differences in female pheromone production and male response in three species of the genus Adoxophyes in Korea. Females of all three species produced mixtures of Z9-14:OAc and Z11-14:OAc as major components but in quite different ratios. The ratio of Z9-14:OAc and Z11-14:OAc in pheromone gland extracts was estimated to be 100:198 for A. honmai, 100:23 for A. orana, and 100:3880 for A. sp. Field tests showed that males of each species were preferentially attracted to the two-component blends of Z9-14:OAc and Z11-14:OAc mimicking the blends found in pheromone gland extracts of conspecific females. The effects of minor components identified in gland extracts on trap catches varied with species. Addition of 10me-12:OAc or E11-14:OAc to the binary blend of Z9-14:OAc and Z11-14:OAc significantly increased captures of A. honmai males, whereas E11-14:OAc exhibited a strongly antagonistic effect on catches of A. sp. males. Moreover, Z9-14:OH or Z11-14:OH added to the binary blends increased attraction of male A. orana but not A. honmai and A. sp. males, suggesting that these minor components, in addition to the relative ratios of the two major components, play a noteworthy role in reproductive isolation between Adoxophyes species in the southern and midwestern Korea where these species occur sympatrically.