This study explores strategies to expand Korea's top 10 seafood export in the oversea market, with a specific focus on the impact of export concentration. For certain seafood items such as laver, crab, and mackerel, characterized by low export concentration, adopting a focused export expansion strategy is more effective. Conversely, highly concentrated seafood items such as toothfish, cod, pollack, and abalone face high risks in export performance due to their heavy reliance on a small number of key export countries. To ensure export stability, it is advisable to implement a diversified export expansion strategy for these highly concentrated seafood items. In the case of medium-concentration seafood items like tuna, oyster, and flounder, the decision between a concentrated or diversified strategy should be based on their specific export situations. Tailoring strategies to the distinctive market characteristics of each seafood item enables exporters to effectively increase oversea market share, promoting stability and sustained growth in export performance.

This study investigated the initial capital trend of newly-established fisheries companies during the Japanese occupation period. The initial capital size of fisheries companies provides information about the viability of the fisheries companies as well as the utilization intensity of fisheries resources. According to the analysis results, the average initial capital size of fisheries companies was larger in the enforcement period of “Chosun Company Ordinance” than in its abolition period. The initial capital size of the Chosun-capital fisheries company was smaller than that of the Japanese-capital fisheries company during the Japanese occupation period. The number of new fisheries companies funded by Chosun capital was less than the number of new fisheries companies funded by Japanese capital. Therefore, it could be seen that the Japanese fisheries companies had stronger dominance in the fisheries sector than the Chosun fisheries companies during the Japanese occupation period, and that Japanese fisheries companies were more viable than Chosun fisheries companies.

The proportions of both the fishery industry and the gross regional domestic product in the national economy are gradually decreasing. If high value-added processed fishery products suitable for regional characteristics are developed, these proportions can be improved. In pursuit of this, it is first necessary to discover processed fishery products specialized in each region and then establish a development framework for them. In this study, location coefficient was used to find processed fishery products specialized in each region. Then, dynamic shift-share analysis was used to establish a development framework which consisted of four development types of processed fishery products. Based on the magnitudes of the industrial mix effect and the regional shift effect, the supporting strategy directions were proposed for four development types of processed fishery products. The supporting strategy directions were all focused on revitalizing the local economy.

The ultimate purpose of this study is to revitalize the fishing community as the basis for the revival of the fisheries industry. The types of Eochon-Gye acceptance were analyzed as a basic study to achieve this purpose. According to the results of the study, it turned out that the head and the member of the Eochon-Gye had the same three Eochon-Gye acceptance types; that is, democratic, decision-making, and separatist types. However, the Eochon-Gye acceptance types by two groups differed in detail, even though they were named by the same names. Therefore, in order to devise an effective revitalization plan of the fishing community, it is necessary to reflect the detailed characteristics of each Eochon-Gye acceptance type owned by the two groups.

2017년에 일본의 지적재산고등재판소(이하, ‘지재고재’)가 선고하여 법원 홈페이지에 게재된 특허관계 취소소송과 관련된 판결의 개요를 보고 한다. 이른바 당사자계(무효심판)와 관련된 것을 ‘목차 I’에서 소개하고 이른바 결정계(거절결정불 복심판)와 관련된 것을 ‘목차 II’에서 소개한다. 한편, 2017년부터 특허이의신청 관련한 특허취소 결정 취소청구사건에 관한 판결이 등장하기 시작 하여, 이에 관해서는 ‘목차 III’에서 소개한다.

본 연구는 감마선 조사 및 배양방법을 이용하여 유 용한 변이체를 선발하고, 그 특성을 관찰하기 위해 수 행되었다. 기내 신초수의 증식은 MS 배지 내에 NAA 0.2mg·L-1에 BA의 농도가 1.0mg·L-1로 증가할수록 양호한 반면 신초의 길이와 뿌리형성율은 감소되었다. 계대배양을 3회 수행한 후 온실에서 순화 및 삽목하였다. 감마선으로 조사된 총 370 개체들은 감마선의 조 사선량에 관계없이 토양이식 후 생존율이 97% 이상이 었다. 조사된 개체들 중 변이의 빈도는 감마선의 선량 이 증가할수록 높아졌다. 50Gy 조사구에서는 화색과 화형의 변이가 각각 28.2와 15.4%로 확인되었다. 화 색과 화형은 다양한 변화를 나타냈으며 줄기색 또한 변화되었다. 예를 들면 흰색에 옅은 자주색의 관상화는 흰색, 적자색, 노랑색 또는 연분홍색 등으로, 흰색이었 던 설상화는 연한 자주색이나 적자색으로 바뀌었다. 설 상화의 길이와 폭 및 화경의 크기가 달라진 개체 및 줄기에서 안토시아닌 색소가 제거된 개체도 관찰되었 다. 본 연구결과 국화 ‘Argus’에서 기내 배양체에 30- 50Gy의 감마선 조사에 의해 화색, 화형 및 줄기색의 다양한 돌연변이체를 선발할 수 있었다.

Hexaploid wheat (Triticum aestivum L.) exceeds about 30% of the world’s cereal production and cultivated over 220 million ha worldwide. Heat stress during the grain filling period gives detrimental effect on crop yields and has emerged as a serious problem throughout the world. Korean wheat cultivars that were released since 1960s were developed for various aims such as winter hardness, earliness, and pest resistance, etc. However, heat stress resistance is an emerging target for wheat breeding nowadays. Selected 11 Korean wheat cultivars (“Baegjoong”, “Dajung”, “Goso”, “Hanbaek”, “Jokyung”, “Joeun”, “Jopum”, “Keumgang”, “Olgeuru”, “Sinmichal”, “Uri”) were exposed to high temperature from DAF (days after flowering) 9~13. In this study, plant responses to heat stress as measured by reduction ratios of total chlorophyll contents, 100 seed weight, shoot dry weight can be translated into degree of tolerance. Therefore, these parameters can be used in wheat breeding for heat tolerance during grain filling period. The obtained results allow us to classify cultivars for heat stress tolerance. Pedigree information of Korean cultivars was shown that wheat line of either tolerant, moderate tolerant, or susceptible trait is succeeded to their descendent, which enable breeders to develop heat stress tolerant wheat by appropriate parental choice.

Kenaf (Hibiscus cannabinus L.) is an annual herbaceous crop of the Malvaceae family. Recently, kenaf is being used in many diversified applications such as pulp, animal feed, bioplastics and cellulosic biofuel etc. A new cultivar 'Jangdae' was developed by mutation breeding using irradiated with 300 Gy gamma-rays. Jangdae has a few distinguishable characteristics such as early flowering, high seed yield and palmate leaf, compared to wild type (Jinju). The fresh matter (FM) and dry matter (DM) yield of Jangdae are similar to those of Jinju, their seed yield (833.3 kg/ha) is approximately 4 times higher than that of Jinju. In addition, the FM and DM yield of Jangdae are 40% higher than those of early-maturing cultivar (C11). We performed the nutritive value of four kenaf cultivars (Jangdae, Jinju, C11 and Hongma300) at 100 day after seeding. The crude protein content of Jangdae, Jinju, C11 and Honma300 were 10.5, 11.0, 9.4 and 10.6%, respectively. The crude fiber, neutral detergent fiber and acid detergent fiber contents were no significant difference among the cultivars. Jangdae, which afforded both a high biomass and seed yield in South Korea, may be useful as potential source of feed and industrial materials.

A new soybean cultivar ‘Wonhyun’, was developed by mutation breeding technique using a 250 Gy gamma ray at Korea Atomic Energy Research Institute (KAERI) in 2010. ‘Wonhyun’ has black seed coat and much better agronomic performance than original variety ‘Paldal’. Their total yield (177.1kg/10a) is much higher than that of ‘Paldal’ (126.9 kg/10a). Also, 100 seed weight of Wonhyun was 27g compared to ‘Paldal’ (13.7g). Contents of 4 essential amino acids such as aspartic acid, glutamic acid, lysine, arginine and unsaturated fatty acid including linoleic and linolenic acid have much higher than ‘Paldal’. This cultivar is good for cooking with rice as improved functional ingredient soybean.

This study examined radiation damage and the optimal gamma-ray dose for mutation breeding in oat (Avena sativa L. cv. Samhan). The seed germination rate decreased as the dose increased over 500 Gy. The median lethal dose (LD50) was approximately 392 Gy. The median reduction dose (RD50) for plant height, tiller number, root length, and flash weight was 411, 403, 394, and 411 Gy, respectively. The optimal dose of gamma irradiation for inducing oat mutation appears to be in the range 300-400 Gy. We performed the comet assay to observe nuclear DNA damage induced by gamma-ray irradiation. This assay showed a clear difference with gamma-ray treatments. DNA damage increased temporarily 7 days after treatment depending on the dose, while no significant difference was identified in response to 300 Gy 30 days after the gamma-ray treatments. The growth characteristics of the M2 generation decreased as the dose increased over 400 Gy.

KAS360-22 종자에 1998년 250 Gy의 감마선을 조사하였다. 그 후대에서 미이라병에 저항성을 가지는 계통을 선발･육성하여, ‘원율’로 명명하고 2009년에 최종적으로 품종보호권을 출원 신청하여 2012년 등록 완료하였다. 원품종 KAS360-22의 종피색이 노란색인데 반하여 신품종 ‘원율’은 갈색을 나타냈다. 100립중은 재래종 KAS360-22이 17.2 g, ‘원율’은 27.5 g으로 종자무게는 증가하였으며, ‘일품검정콩’(27.4g)과는 별다른 차이를 보이지 않았다. 신품종 ‘원율’의 10a 당 수량은 미이라병 발병 조건에서 233.3 kg으로 재래종 KAS360-22 (24.9 kg)에 비교하여 10.6배 가량 높았고, 대조구 ‘일품검정콩’(121.4 kg)에 비교하여도 1.9배 가량 높아 밥밑용 콩으로 안정적인 수량 확보가 가능할 것으로 사료된다.

본 연구에서는 대표적인 섬유작물인 케나프의 가축 사료용으로 이용 가능성을 검증하기 위해서 한국원자력연구원에서 개발한 신품종 장대와 다른 품종들(옥수, C12, C14-DRS)에서 생육특성과 유용물질 함량을 비교 분석하였다. 전체적으로 돌연변이 신품종 장대가 다른 대조품종들보다는 생육이 좋았는데 특히 생체중, 건물중, 줄기직경, 마디 수에서 대조품종들보다 1.6~3.1배 가량 높은 생육 특성을 보였다. 조단백질과 조지방 함량은 장대의 줄기에서 가장 높았으며, 잎에서는 가장 적게 나타났다. 줄기의 조섬유와 조회분 함량은 계통들간의 유의적인 차이를 보이지 않았다. 잎의 조섬유 함량은 C14-DRS가 가장 높았으며 그 다음으로 장대가 높았다. ADF함량은 옥수의 줄기와 잎에서 가장 많이 나타났으며 NDF는 장대의 줄기와 잎에서 가장 높게 나타났다. 총폴리페놀과 총플라보노이드 함량은 옥수, C12, 장대, C14-DRS순으로 나타났다.