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장석성 ( Suk Seong Jang ),이재천 ( Jae Cheon Lee ),한심희 ( Sim Hee Han ),김홍은 ( Hong Eun Kim ) 한국농림기상학회 2003 한국농림기상학회지 Vol.5 No.1
본 연구는 층층나무를 대상으로, 엽 내에서 측정한 MDA 함량을 기준으로 오존 내성 개체를 선발하고자 수행하였다. 또한 각종 오염물질에 대한 내성을 평가하기 위해 MDA 함량을 이용하는 것이 타당한지를 검토하고자 하였다. 실험에 사용된 층층나무는 오대산(5본), 치악산(5본), 점봉산(5본), 주왕산(1본), 태백산(1본), 지리산(5본), 소리봉(5본), 속리산(4본), 소백산(4본), 계방산(4본) 등 9개 지역에서 채취한 종자를 이용하였으며, 오존 처리는 100ppb에서 하루 8시간씩 10주 동안 실시하였다. 오존 처리가 종료된 후, 층층나무의 수고와 MDA 함량을 측정하였고, 수고와 MDA 함량의 표준화 지수를 이용하여 오존에 대한 내성그룹, 중간그룹, 민감성그룹을 각각 30개체씩 선발하였다. 오존 처리된 층층나무의 수고와 MDA 함량은 가계간, 지역간 차이를 보여주었으며, MDA 함량은 수고생장과 역상관(r=-0.531, p≤0.001)을 나타냈다. 개체별 수고와 MDA 함량을 기준으로 선발한 층층나무는 내성그룹과 민감성 그룹간 수고와 MDA 함량 차이가 뚜렷하였다. 따라서 MDA 함량은 오존에 대한 내성 및 민감성을 구분하는데 유용하게 이용될 수 있을 것으로 판단된다. This study was conducted to select the ozone tolerant individuals of Cornus controversa Hemsl., and to use malondialdehyde (MDA) content as an indicator of plant damage level for several oxidative stress levels. Seeds of C. controversa were collected at 9 provinces in Korea. One-year-old seedlings were grown in greenhouses and exposed to 100 ppb ozone concentration for 8h day^-1 for 10 weeks. At the termination of ozone exposure, heights of seedlings were measured and MDA contents in the leaves were analyzed. Tolerant, intermediate, and sensitive individuals were selected using the standardized indices of height and MDA content. Height and MDA content of C. controversa exposed to ozone were significantly different among individuals and provinces. MDA content showed negative correlation (r=-0.531, P≤0.001) with height growth performance. Height and MDA content of tolerant individuals presented significant differences from those of sensitive individuals. As a result, MDA content may be suitable for the evaluation of the damage level of plants by oxidative stress.
장석성 ( Suk Seong Jang ),이석우 ( Seok Woo Lee ),김찬수 ( Chan Soo Kim ),김영모 ( Yong Mo Kim ),김홍은 ( Hong Eun Kim ) 한국산림과학회 2003 한국산림과학회지 Vol.92 No.1
The genetic structure of Cournus controversa Hemsl. , sampled throughout its range in South Korea, was studied using starch-gel electrophoresis, Eighteen enzyme loci in 8 enzyme systems were examined. The level of genetic diversity (A=1.6, A_e=1.192, P=48.1%, H_o=0.120, H_e=0.124) and the degree of genetic differentiation (Fsr = 0.073) were comparable to those of other tree species with similar life histories and ecological trails . Nine natural C. controversa populations seemed to he in equilibrium with the expectations of Hardy-Weinberg. Nm, the number of migrants per generation was 3.16. The UPGMA- derived dendrogram based on Nei`s (1978) genetic distance showed decisive geographic trends; the geographically close populations were genetically clcse . The spatial distribution patterns of C. controversa trees in a stand and the seed dispersal mode appeared to be critical factors that determined the genetic structure of C. coufroyerso.
Hibiscus syriacus L . 의 종내일대잡종의 (種內一代雜種) 화색과 (花色) 화형의 (花型) 분리현상
김정석,이석구,장석성 ( Chung Suk Kim,Suk Koo Lee,Suk Seong Jang ) 한국산림과학회 1980 한국산림과학회지 Vol.46 No.1
We observed performance of segregation in flower color and type of hybrids which obtained from crossing of intra species in Hibiscus syriacus. Obtained results were followings. 1. The purple flower was dominance to the white one and this was presumed that was owing to cytoplasmic heredity. 2. Single and double petal of flower was presumed that was originated from factors of Ss and dd. 3. There was not variation in flower color and type of F₁ hybrid between 4 n and 2 n Hibiscus syriacus. 4. There were many variation of flower color among F₁ hybrids which abtained in open pollination of Hibiscus syriacus. 5. We could observe many flowers variegated with red color among F₁ hybrids which obtained in crossing between double petal flowers of Hibiscus syriacus.
동위효소 분석에 의한 안면도 소나무 천연집단의 교배양식 모수 추정
이석우 ( Seok Woo Lee ),장석성 ( Suk Seong Jang ),장경환 ( Kyung Hwan Jang ),김찬수 ( Chan Soo Kim ) 한국산림과학회 2003 한국산림과학회지 Vol.92 No.2
The mating system of Pinus densiflora in a natural population of Anmyun island was quantified by allozyme analysis of progeny arrays using a mixed-mating model. Multilocus outcrossing rates (t_m) were estimated to be 0.860 (SE 0.043) with all 17 polymorphic loci investigated and 0.848 (SE 0.041) with 15 unlinked loci alone. We found high correlated outcrossed paternity (r_p=0.874±0.080 for 17 loci and 0.752±0.113 for 15 unlinked loci) and evidence for biparental inbreeding (t_m-t_s=0.114±0.019 for 17 loci and 0.125±0.018 for 15 unlinked loci). As expected from the predominantly outcrossed mating system, inbreeding coefficients (Wright’s fixation index) among maternal individuals were lower than those for the offsprings, indicating selection may eliminated selfed (and/or inbred) offspring from population prior to achieving reproductive amturity.
오존에 노출된 자작나무류 4 수종 잎의 가시적 피해와 생장 반응
이재천(Jae Cheon Lee),한심희(Sim Hee Han),김장수(Chang Soo Kim),장석성(Suk Seong Jang) 한국농림기상학회 2002 한국농림기상학회지 Vol.4 No.1
This study was conducted to compare ozone sensitivity among Betula sp. by measuring visible foliar injuries and growth responses. Four Betula sp.(B. costata, B. davurica, B. platyphylla var. japonica and B. ermani) grown in the greenhouse, were transplanted in the plastic pots. One-year-old seedlings of four Betula sp. exposed to relatively high ozone concentration(100 ppb) for 8 h day^-1 for 5 weeks in fumigation chamber. We measured visible injuries, leaf numbers and leaf areas at the end of experiments, and growth effects were evaluated by measuring the relative growth rate(RGR) of height and diameter and the dry weights of leaf, stem and root once a week. Four Betula species showed the significant differences for growth responses by the ozone treatment. Growths of three species, except for B. ermani, were significantly reduced by the O_3 exposure. B. costata with leaf senescence at the early growing stage and B. davurica indicated highest visible foliar injury rate may be the sensitive species at the 100 ppb ozone concentration. Although the growth rate of B. ermani was reduced by 100 ppb ozone exposure at the early growing stage, B. ermani may be a tolerance species that recover the growth rate with the adaptation for the high ozone concentration.
한심희,김찬수,장석성,이현주,탁우식 한국농림기상학회 2004 한국농림기상학회지 Vol.6 No.3
This study was conducted to examine the changes in the seed physical characters and germinative properties of three tree species at three different storage times in order to determine the most suitable storage time and condition. Seed physical characters and germinative properties were examined from seeds of Fraxinus rhynchophylla, Zanthoxylum schinifolium and Staphylea bumalda that were stored at -18C for 1, 3 and 10 years, and the growth performance and physiological characters of their seedlings were analyzed. Seed physical characters and germinative properties showed significant differences between three storage times as well as three tree species. Seed moisture content of F. rhynchophylla and S. bumalda and seed fresh weight of Z. schinifolium decreased with increase of storage time. Storage time represented negative correlation with moisture content and fresh weight (r = -0.822, p < 0.01). Seed percent germination of Z. schinifolium and S. bumalda stored for 3 and 10 years decreased less than 15% and 10.7% respectively. Mean germination times for seed of F. rhynchophylla, Z. schinifolium and S. bumalda were delayed 11.9, 5.7 and 9.7 days after a storage time of 10 years, respectively. However the growth and viability of seedlings didn't show a special pattern for storage time and tree species.
소나무 단일 모수의 반수체 게놈을 이용한 RAPD 및 I-SSR 표식자의 연관분석
정재민,장석성,홍용표,김용률 한국임학회 2000 한국산림과학회지 Vol.89 No.4
A linkage map for Japanese red pine (Pinus densiflora) was constructed on the basis of two DNA marker systems of random amplified polymorphic DNAs (RAPDs) and inter-simple sequence repeats (I-SSR). Haploid genomic DNAs were extracted from megagametophyte tissues of 96 individual seeds in a single tree. A total of 98 DNA markers including 52 RAPD markers amplified by 25 primers and 46 I-SSR markers amplified by 18 primers were verified as Mendelian loci showing 1 : 1 segregation in 96 megagametophytes which were χ²-tested at 5% significance level. Of them, 63 segregating loci turned out to be linked into 20 linkage groups by the two-point analysis. However, 35 loci (17 RAPD and 18 I-SSR) of the 98 segregating loci did not coalesced into any linkage groups at a LOD of 3.0. The linked 63 loci were separated by an average distance of about 25.5 cM, which were spanned 1097.8 cM as a whole. The minimum and maximum map distances of the linkage groups were 4.3 cM and 54.9 cM, respectively. Incorporation of I-SSR loi into linkage map of RAPD loci resulted in extended and partially more saturated linkage blocks.