국내(國內) 주요(主要) 사과산지(産地) 4개처(個處)에서 저장중(貯藏中) 부패과(腐敗果) 및 수확전(收穫前) 과수원(果樹園) 이병과(罹病果)에서 Alternaria mali를 분리(分離)하여 각종(各種) 살균제(殺菌劑)를 가용(加用)한 PSA배지상(培地上)에 배양(培養)하여 균(菌)의 내성(耐性)을 조사(調査)한 결과(結果)는 다음과 같다. 지역별(地域別) 및 계절별(季節別) 균주간(菌株間)에는 약제내성(藥劑耐性) 차이(差異)가 적었으며, 살균제(殺菌劑)의 종류(種類) 및 농도(濃度)에 따른 차이(差異)는 컸다. Chlorothalonil 및 captafol의 균생육(菌生育)에 대(對)한 MIC 는 각각(各各) 100,238 및 이상(以上)으로서 효과(效果)가 가장 낮았으며 균(菌)의 내성(耐性)이 가장 높았다. lprodione 및 folpet의 MIC는 각각(各各) 3,825 및 이상(以上)으로 중도(中度)의 효과(效果)를 보였으며 균(菌)의 내성(耐性)도 중도(中度)였다. polyoxin의 MIC는 로서 효과(效果)가 높았으나 이는 권장농도(勸奬濃度)의 9배(倍)로서 균(菌)의 내성(耐性)이 약간(若干) 발생(發生)한 경향(傾向)을 보였다. polydong 및 oxidong 의 MIC 는 각각(各各) 500 및 이하(以下)로서 효과(效果)가 가장 높았으며 권장농도(勸奬濃度) 이하(以下)에서 균생육(菌生育)을 억제(抑制)하였으므로 현재(現在)로서는 농가(農家) 과수원(果樹園)에서 균(菌)의 내성(耐性)이 가장 낮았다. 공시(供試) 살균제(殺菌劑) 7종(種)에 대(對)한 사과 반점(斑點) 낙엽병균(落葉病菌)의 균사생장(菌絲生長), 포자형성(胞子形成) 및 포자발아(胞子發芽)는 같은 경향(傾向)의 반응(反應)을 보였다.

Background : Rehmannia glutinosa is a perennial herb belonging to family Scrophulariaceae. This study was breeding of R. glutinosa cultivar with insect tolerance and high-yielding. Methods and Results : ‘Chunggang’ is developed by the medicinal crop breeding team of National Institute of Horticulture and Herbal Science (NIHHS), Rural Development Administration (RDA), during the period from 2005 to 2017. The reproduction of Rehmannia glutinosa has been accomplished mainly by vegetative propagation with its seedlings. This cultivar was selected from seedling of RG10. The plant type of Chungang is some rising from ground. Regional yield trials conducted at three site from 2016 to 2017. The root yield of ‘Chunggang’ was 22.3 ton per hectare, which was increased 11% compared with ‘Jihwang 1’ (check variety). Also, ‘Chunggang’ has higher insect tolerance compared with ‘Jihwang 1’. Conclusion : ‘Chunggang’ is a insect tolerance and high-yielding Rehmannia glutinosa cultivar.

Background : Cytochrome P450 enzymes belong to the superfamily of monooxygenases that are found in all living organisms with diversity in their reaction chemistry. These P450 enzymes are being used extensively by plants in their defense mechanism. Tetracyclic triterpenes reported as major ginsenoside constituents in Panax ginseng, formed by multiple hydroxylation of cytochrome P450. CYP P450 enzymes is effective in metabolising both natural and xenobiotic compounds. In this study, two ginseng CYP genes (PgCYP76C and PgCYP736A) were functionally characterized by overexpression in heterologous plant system. Methods and Results : In Arabidopsis thaliana and Panax ginseng, planta transformation was generated by floral and cotyledon dipping method using Agrobacterium tumefaciens (C58C1) individually. Spatial and temporal patterns of gene expression were analyzed by qRT-PCR against abiotic and biotic stresses. Herbicide (chlorotoluron) tolerance was performed at seedling stage by in vitro assay to check ectopic expressions. PgCYP736A expression were more abundant in leaves compared to roots and stem of 2-years-old ginseng, where as PgCYP76C gene was found to be highly expressive in rhizome, roots and leaves. Differential expressions were observed in response to abiotic stresses of two ginseng CYP genes, both expressed higher in response to NaCl and SA (salysilic acid) in ginseng. Transgenic Arabidopsis plants overexpressing PgCYP76C gene showed small, rounded leaves and reduced height. This phenotype was found to be caused by down regulation of gibberellin biosynthesis-related genes. Another function revealed tolerance towards herbicides that belongs to phenyl urea. Conclusion : This study indicates the functional roles of CYP genes in plant growth and stress responses. Studied genes also can be used as a tool to make plants herbicide tolerant. Further investigation might focus on it’s function over terpene biosynthesis and defence mechansim against (a)biotic stress.

Purpose: The purposes of this study were (a) to investigate the relationships between perceived motivational climate and athlete effort, and (b) to examine the mediating effects of sport failure tolerance on the relationships between motivational climate and athlete effort. The conceptual model of this study assumed that motivational climate would affect sport failure tolerance and these would, in turn, affect athlete effort through the mediation of the sport failure tolerance. Methods: A total of 321 Korean active high school student athletes from 6 sports participated in the study (Mage=17.83years, SD=±.80). The participants completed four questionnaires: a demographic questionnaire, Sport Failure Tolerance Questionnaire, Perceived Motivational Climate in Sport Questionnaire, and Athlete Effort Questionnaire. Results: The results of the final model indicated that competitive climate was positively related to task difficulty (.21), whereas after failure emotion and behavior factors did not. Mastery climate was significantly related to all three dimensions of sport failure tolerance (task difficulty .39, after failure emotion .39 and failure behavior .57). Task difficulty was only significantly related to athlete effort (.14). Mastery climate was significantly related to athlete effort (.31). Significant indirect effects were observed. The bootstrapping results indicated that the relationship between mastery climate and athlete effort was mediated by task difficulty, after failure emotion and failure behavior. Conclusion: The findings of this study contribute to the current understanding of the relationships between perceived mastery climate and athlete effort and shed light on the important roles of sport failure tolerance.

국내 일부 시설재배지는 장기간 과도한 양분 투입 등에 의한 염류 집적 현상이 문제가 되어왔으며, 최근 이상기온에 따른 온도장해에 의한 피해도 발생하고 있다. 이러한 현상에 대해 친환경적으로 대처하기 위하여 고염류와 온도 스트레스에 대해 작물에 내성을 증강시키는 미생물을 선발하였다. 국내 토양에서 분리한 1,944균주중 고염류 또는 온도 스트레스 조건에서 세균의 생장과 식물생장촉진 관련 특성(IAA 생성, ACC deaminase 활성, 인산가용화능)을 고려하여 20균주를 1차 선발(전체 균주의 1.03%)하였다. 1차 선발한 20균주 중 토마토 식물검정을 통해 고염류 또는 온도스트레스에 대한 내성을 유도하는 7세균(1차 선발균주의 35%, 전체 균주의 0.36%)을 단계적으로 선발할 수 있었다. 선발된 세균은 16S rRNA 유전자의 염기서열 분석을 통해 모두 Bacillus 속에 속하는 것으로 확인되었다. 이러한 결과로 선발된 7균주는 토마토의 고염류 또는 온도 스트레스에 대한 효과적인 미생물 제제로 활용이 가능한 것을 확인할 수 있었다.

전 세계적인 지구 온난화로 인한 가뭄은 농작물의 생산성을 저해하는 주요 원인 중 하나이며, 고온과 건조가 복합적으로 작용하여 식물 생장을 감소시킨다. 본 연구에서는 Bacillus velezensis YP2 균주의 식물 생육촉진 및 건조 스트레스 내성 증진 효과를 온실과 시설하우스 포장에서 조사하였다. 또한 B. velezensis YP2 균주의 처리 전과 후 케일 근권과 뿌리에서 배양법에 의한 상대 정량 방법으로 B. velezensis YP2 균주의 근권 및 뿌리 정착능을 분석하였다. 온실 검정 결과 YP2 균주 처리구에서는 무처리구와 비교하여 케일 유묘의 초장 26.7% 및 지상부 생체중 142.2% 증가시키는 효과가 있었다. 또한 B. velezensis YP2 처리구에서는 무처리구와 비교하여 39.4%의 건조 피해 경감 효과가 있었다. 시설하우스 포장 검정 결과에서도 B. velezensis YP2 균주 처리에 의한 케일의 생장촉진 효과와 건조 스트레스 내성 증진 효과가 있었으며, B. velezensis YP2 처리구에서 케일 잎의 상대수분함량이 무처리구와 비교하여 7, 10, 14일에 모두 높은 것으로 나타났다. B. velezensis YP2 균주의 뿌리 정착능 분석 결과, 균주 처리 21일까지 케일 근권 및 뿌리 균밀도가 무처리구와 비교하여 B. velezensis YP2 처리구에서 유의하게 높은 것으로 나타났다. 따라서 균주 처리 후 최소한 21일이 경과할 때까지 B. velezensis YP2 균주가 케일 근권과 뿌리에 정착하여 식물과 상호작용함으로서 생육을 촉진하고 식물의 물 이용률을 증가시켜 건조 스트레스 내성을 증진하는 데 관련이 있을 것으로 판단된다. 본 연구 결과를 통하여 B. velezensis YP2 균주는 가뭄으로 인한 건조한 토양 조건에서 작물 생산성을 향상시키는 가능성이 있는 유용한 미생물로 이용할 수 있을 것으로 생각된다.

We developed new two-rowed covered barley ‘Gwangmaeg’ superior to ‘Hopum’ that has been widely cultivated in Korea for using beer-materials. ‘Gwanngmaeg’ was related from the line named as ‘Iksan149’ in 2010 after yield trials test in conducted for three years from 2008. And then it was registered to ‘Plant protection right, No. 5847’ in 2016 after field experiment by KSVS(Korea Seed & Variety Service). ‘Gwangmaeg’ has distinct characteristics in winter type (IV) and mid-tall culm length which makes reduce damage by off-season heading and lodging comparing to those of ‘Hopum’. ‘Gwangmaeg’ have characteristics of cold tolerance and disease resistance to BaYMV(Barley yellow mosaic virus) and Net blotch(Pyrenophora teres). Yield of ‘Gwangmaeg’ was about 611kg/10a and 524kg/10a in upland and paddy field condition, respectively, which higher 2-4% than ‘Hopum’, however, it has no significant difference. In quality examination for beer usage, ‘Gwangmaeg’ has lager grain and higher assortment ratio than those of ‘Hopum’. In malt quality, ‘Gwangmaeg’ showed higher and better quality in malt extract rate and diastatic power than those of ‘Hopum’. ‘Gwangmaeg’ would be suitable for the area above –4℃ of daily minimum temperature in January in Korean peninsula.

‘Daname’ is a foxtail millet(Setaria italica Beauv.) variety developed and registered by Department of Southern Area Crop Science, NICS, RDA in 2014. This variety which collected from IT252182 was developed through pure line selection. ‘Daname’ is a early-maturing variety having 100 days of growth period from seeding to harvesting in Milyang of Korea. The culm length is about 97 cm which is 20cm shorter culm length than standard variety ‘Hwanggeumjo’, and it showed tolerant to lodging in field. The panicle shape is a cylindrical and the length is about 19cm. According to the grain, seed color and dehusked grain colors are orange and yellow and endosperm characteristic is non-glutinous. The yield performance of this variety was about 3.81 t ha-1 in local adaptability test from 2013 to 2014 and it showed similar with standard variety ‘Hwanggeumjo’. As the addition amount of ‘Daname’ in rice increased from 0% to 30% and 100%, the antioxidant ability of ‘Daname’ added rice and hardness/stickiness balances were increased. But we could not find out the difference of hardness/stickiness balances between 0%and 10% addition. So, 10% addition amount was concluded to increase antioxidant ability regardless eating quality of cooked rice. (Variety registration No. 6243)

Rice production is largely affected by various environmental conditions such as cold, heat and flooding. Here, to identify cold tolerant QTLs at seedling stage in rice, we generated RIL population derived from a cross between Hanareum 2 and Unkwang which are a highly cold sensitive and cold tolerant, respectively. We observed cold phenotype of this population in the growth chamber conditions and natural field conditions. For observation of cold tolerant phenotype of RIL population in the growth chamber, we treated cold stress (5~13℃) for 14 days and recovery for 4 days. When we examined the phenotype of RIL in the field conditions, temperature range in the field conditions was about 6 to 25℃ in 2015~2016. We named QTLs as Seedling Cold Tolerant (SCT) in growth chamber and Cold induced Yellowing Tolerant (CYT) in the field, respectively. Three QTLs for SCT and 5 QTLs for CYT were detected on chromosome 1, 6, 7, 8, 10, 11 and 12. Among these QTLs, qSCT12 on chromosome 12 showed 26.3 LOD score with 25.5% of phenotypic variation. When qSCT11.1 and qSCT12 were combined, cold tolerant was most strongest in our experimental conditions. qCYT10 on chromosome 10 was identified in field experiment on both 2015 and 2016. These results may provide useful information for a marker-assisted breeding program to improve cold tolerance in rice.

This study selected commonly known species of fruit trees, and re-selected the species that endure the stress of extreme cold weather and physiologically restore themselves to the previous state until the following year. Then we could go ahead to propose the species that were appropriate as urban greening plants in weather condition of any part of the country. To do this, we conducted an experiments for six species of fruit trees based on the preference of the general public and recommendation of the experts; Morus alba (English name: mulberries), Diospyros kaki (English name: Persimmon), Prunus persia (English name: Peach), Elaeagnus umbellata var. coreana (English name: Korean Autumn Olive), Malus domestica 'Alps Otome' (English name: Alps Otome), and Prunus mume (English name: Blue Plum). The experiment verifies whether the trees survive without any stress from the cold weather under the national climate conditions (one in the suburbs of Seoul: Yongin city, one in the central Chungcheong region: Daejeon city, and in the southern Gyeongsang region: Jinju city in Korea). The experiment lasted for a year from August 2016 to August 2017. The levels of electrolytic efflux, chlorophyll content, plant height, fresh weight, and dry weight were measured four times (on August of 2016, January, February, and August of 2017) for each tree planted bare ground outdoors. Results showed that Diospyros kaki, Prunus persia, and Malus domestica 'Alps Otome' were proven durable and resistant to winters of all three areas (one in the suburbs of Seoul: Yongin city, one in the central Chungcheong region: Daejeon city, and in the southern Gyeongsang region: Jinju city in Korea). Especially, the increase of chlorophyll content and the reduction of electrolytic efflux were noticeable in Prunus persia than in the other two species, proving itself as the most cold-tolerant among the six species used in the experiment. In addition, interpreting from the physiological restoration data of one-year span before and after getting through winterer, Prunus persia was proven to be the most cold-tolerant species.

This study was carried out to create new popcorn variety. ‘G-Popcorn’ was made by single crossing with two inbred lines, the seed parent, GP3, and the pollen parent, GP4. The hybrid was made in 2009 and selected in 2014 after investigating characteristics for three years from 2012 to 2014. ‘G-Popcorn’ was evaluated on 2 or 3 places in Gangwon-do for three years. ‘G-Popcorn’ showed higher lodging tolerance and popping volume in contrast to the check variety ‘Oryunpopcorn’. The plant height is 213cm indicating 5cm lower than that of ‘Oryunpopcorn’. Also, ration ear height of plant height of ‘G-Popcorn’ is 59%. The weight of 100 seeds was 15.5g, similar to that of ‘Oryunpopcorn’. The popping volume of ‘G-Popcorn’ was about 28.3㎤/g, higher than 25.0㎤/g of ‘Oryunpopcorn’. The yield of ‘G-Popcorn’ was 467kg/10a in regional yield trials for three years, which was 7% higher than that of ‘Oryunpopcorn’.

A new colored soybean variety ‘Jungmo3005’ was developed as a breeding parent. ‘Cheongjakong’ and ‘Geomjeongkong3’ were crossed in 2000. F1 and F2 populations were grown for 2 years and selected by pedigree method from F3 to F5. The preliminary yield trial (PYT) and advanced yield trial (AYT) were conducted from 2006 to 2007, and regional yield trial (RYT) in 9 regions was conducted from 2008 to 2010. ‘Jungmo3005’ is determinate, white flower, green cotyledon, green spherical seed and yellow hilum. Flowering date and maturing date were July 30 and Oct. 7, respectively. Other quantitative characteristics of ‘Jungmo3005’ were similar to ‘Cheongdu1’, but it was more tolerant to lodging and shattering than ‘Cheongdu1’ at RYT field and indoor test. Although ‘Jungmo3005’ showed symptom of mosaic disease in inoculation test at greenhouse, it had high level of resistance to soybean mosaic virus and bacterial pustule diseases at field. The yield of tofu of ‘Jungmo3005’ was more than that of ‘Cheongdu1’. The mean yield of ‘Jungmo3005’ in RYT was 256kg/10a which was 97% of the yield of ‘Cheongdu1’. ‘Jungmo3005’ is expected to be widely used as a breeding parent to cross with other varieties and lines for creating colored soybean cultivars with tolerance to lodging, shattering and bacterial pustule.

‘Hwaweon 7’ was developed from a cross between the African upland cultivar, ‘Moroberekan’ and ‘Ilpumbyeo’ based on marker-aided backcross selection. The recurrent parent, Ilpumbyeo is a high grain quality cultivar with medium to late maturity. Hwaweon 7 is nearly isogenic to Ilpumbyeo except a small Moroberekan introgressed segment on chromosome 6 harboring genes related with spikelets per panicle and internode diameter. The preliminary and replicated yield trial was conducted at Chungnam National University and Chungcheongnamdo Agricultural Research & Extension (CARES), Yesan in 2010 and 2011. The local adaptability test was carried out by the National Seed Management Office (NSMO) in 2012 and 2013. This cultivar was registered to NSMO with a cultivar designated as “Hwaweon7”. This cultivar averaged 80cm in culm length and has a medium growth duration. Milled rice of “Hwaweon7” is translucent and the grain quality traits are comparable to those of the recurrent parent. The average yield potential of Hwaweon 7 in grain was about 6.48 MT/ha at the ordinary fertilizer level for two years about 5.1% higher than that of Ilpumbyeo due to increase in spikelets per panicle. This variety is tolerant to lodging and the tolerance is due to the APO1 gene controlling the base internode diameter on chromosome 6 introgressed from the donor parent, Moroberekan. The Apo1 gene would be useful in enhancing resistance to lodging in rice breeding program.

‘Jungmo2501’ (Avena sativa L.), a winter oat for forage use, was developed by the breeding team at the National Institute of Crop Science, RDA in 2010. The following is the characteristics of ‘Jungmo2501’ that is characterized as light green leaf, yellow brown culm and whitish yellow grain. The heading date of ‘Jungmo2501’ was about 3 days earlier than that of check cultivar ‘Samhan’(May 7 and May 10, respectively). Its plant height was 11 cm longer than 103 cm of the check, and the leaf blade ratio of aerial parts was 26 % higher than the check (11.8% and 9.4%, respectively). The cold tolerance, resistance to lodging and wet injury of ‘Jungmo2501’ were similar to those of the check. The average forage dry matter yield of ‘Jungmo2501’ harvested at milk-ripe stage was 5% higher than the check (15.5 ton ha -1 and 14.7 ton ha -1 , respectively). ‘Jungmo2501’ was higher than the check in terms of protein content (6.6% and 5.9%, respectively), neutral detergent fiber (58.5% and 57.6%, respectively), and acid detergent fiber (34.5% and 32.1%, respectively), while total digestible nutrients was lower than the check (61.6% and 63.6%, respectively), and TDN yield was 0.37 ton ha -1 more than that of the check (9.71 ton ha -1 and 9.34 ton ha -1 , respectively). The silage grade of ‘Jungmo2501’ estimated by Flig score showed level Ⅱ, meaning good quality. Fall sowing cropping of ‘Jun

We screened the drought tolerant maize using seventeen maize genotypes from different sources, nine inbred genotypes from United States Department of Agriculture (USDA) (B73, CML103, CML228, CML277, CML322, CML69, Ki3, Ki11, and NC350), three Southeast Asian genotypes (DK9955, LVN-4, and 333), and five Korean hybrids (Cheongdaok, Gangdaok, Ilmichal, Kwangpyeongok, and Pyeonganok). We evaluated anthesis-silking interval (ASI), leaf senescence (LS), ears per plant (EPP), tassel length (TL), and fresh weight (FW) at silking date. According to ASI and LS examination, CML103 and Kill were drought tolerant genotypes, wheareas Ki3 and 333 were drought susceptible. EPP, TL, and FW differed according to drought resistance. Grain yield was correlated strongly with ASI, but moderately with LS. Difference in ASI between drought-stressed (DS) and well-watered (WW) conditions was less than three days in CML228, CML103, Cheongdaok, NC350, B73, Ki11, CML322, and Kwangpyeongok, whereas that of Ki3, Pyeonganok, and Gangdaok was more than 6.5 days. We concluded that CML228, CML103, Cheongdaok, NC350, B73, Ki11, CML322, and Kwangpyeongok are drought tolerant genotypes, whereas Ki3, Pyeonganok, and Gangdaok are drought susceptible.

The purpose of this study was to assess drought tolerance of groundcover plants for extensive green roof. Form July to November 2013, plant height, chlorophyll content, soil moisture, evapotranspiration and survival rate was measured. As results, after unirrigation started, Aster koraiensis reached 0% of soil moisture earliest followed by Sedum kamtschaticum, Hemerocallis fulva, Hylotelephium spectabile, Iris sanguinea, Hosta longipes and control. Among the plants, A. koraiensis withered earliest on 19th day of unirrigation experiment, followed by H. longipes and H. fulva (27th day); and I. sanguinea (29th day). S. kamtschaticum and H. spectabile survived even after 120th day of the experiment. As for chlorophyll content, I. sanguinea showed constant values in early stage than rapidly decreased right before its withering. Chlorophyll content of A. koraiensis and H. fulva showed rapid decrease from the beginning, while that of H. spectabile and S. kamtschaticum showed continuous reduction for first 30 days and the reduction was slowed down since then. In conclusion, H. longipes, I. sanguinea and H. fulva were found most applicable for extensive green roof considering scenic aspect.

이 글은 데리다의 환대의 철학에 근거하여 다문화 사회에서 이방인에 대한 환대의 특징 을 검토하고, 환대의 철학이 다문화 사회로서의 한국에 주는 시사점이 무엇인지 탐색하려 는 목적을 가지고 있다. 데리다의 환대는 다문화 사회에서의 이방인이 가져온, 이방인에 관 한 질문들을 통해 이방인/비이방인에 대한 관념과 양자 간의 경계를 해체함으로써 기존의 환대에 내재된 한계를 극복할 것을 요청한다. 또한 데리다는 환대의 법제화가 수반하는 딜 레마를 극복함으로써, 환대의 법을 통해 궁극적으로 이루고자 하는 것이 정의를 실현하고 자 하는 것임을 상기시켜준다. 마지막으로 환대의 철학은 제한적이고 조건적인 관용을 넘 어 무조건적이고 절대적인 환대를 실천하기 위해 끊임없는 시도가 필요함을, 그리고 그것 이 곧 정의를 실현하는 것임을 강조한다. 데리다의 환대의 철학은 평등과 사회적 정의의 실현과 관련하여 한국 사회에 중요한 시사점을 준다.

Machining error makes the uncertainty of dimensional accuracy of the kinematic structure of a parallel robot system, which makes the uncertainty of kinematic accuracy of the end-effector of the parallel robot system. In this paper, the tendency of trajectory tracking error caused by the tolerance of design parameters of the parallel robot is analyzed. For this purpose, all the position errors are analyzed as the manipulator is moved on the target trajectory. X, Y, Z components of the trajectory errors are analyzed respectively, as well as resultant errors, which give the designer of the manipulator the intuitive and deep understanding on the effects of each design parameter to the trajectory tracking errors caused by the uncertainty of dimensional accuracy. The research results shows which design parameters are critically sensitive to the trajectory tracking error and the tendency of the trajectory tracking error caused by them.

‘Daanok’, a new maize F1 hybrid (Zea mays L.), is developed by the maize breeding team at the National Institute of Crop Science (NICS), RDA in 2013. The high-yielding hybrid, named ‘Daanok’ was bred by crossing between two inbred lines, ‘KS174’ and ‘KS175’. It is a yellow semi-flint maize hybrid (Zea mays L.). After preliminary yield trial and advanced yield trial of Daanok in Suwon for two years, regional yield trial of that was subsequently carried out for evaluation of its growth and yield at three different locations from 2011 to 2013. The silking date of Daanok is earlier than that of the check hybrid, ‘Jangdaok’. The plant height of Daanok is 229cm, similar to Jangdaok, and its ear height ratio is similar with that of Jangdaok. It has resistance to lodging. There are much of the No. of ear per 100 plants. The ear length of Daanok is similar with that of Jangdaok. The weight of 100 seeds of Daanok is the same with that of Jangdaok. It has strong resistance to northern leaf blight (Exserohilum turcicum) and southern leaf blight (Bipolaris maydis). It has strong resistance to ear lot. It has moderate resistance to corn borer. The grain yield (7.34 ton/ha) of Daanok was 23% higher than that of Jangdaok. The seed production of Daanok has gone well due to a good synchronization of flowering period during crossing between the seed parent, KS174, and the pollen parent, KS175, in Yeongwol and F1 seed yield was 2.38 ton/ha. Daanok would be a suitable cultivar to all plain area in Korea.