• 한국식품조리과학회지
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• 제28권5호
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• pp.605-612
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• 2012

In comparison of the antioxidant activities by the different extraction methods of the domestic mung bean varieties, 'Geumsung', 'Dahyeon', 'Sohyeon', and 'Eohul', were soaked and dehulled, with the extracts obtained by using 80% ethanol at room temperature or heated. The mung bean hull was freeze-dried, ground, and passed through 100 mesh sieve. The moisture content of the hull powder ranged from 1.70 to 3.15%. The total dietary fiber content ranged from 84.42 to 88.47%, with the Sohyeon hull showing the highest value. The L value of Geumsung hull (62.93) was the highest, and the a value of Sohyeon hull (-1.69) was the lowest (p<0.05). The color difference was the highest in Dahyeon hull (42.52) and lowest in Geumsung hull (38.52). The Eohul hull's chlorophyll a and b contents were the highest with the 80% ethanol extract by heating (10.55 and 6.12 ${\mu}g/mL$, respectively), but the Sohyeon hull showed the highest in 80% ethanol extract at room temperature (7.63 and 3.93 ${\mu}g/mL$, respectively). The total phenolic and total flavonoid contents of the ethanol extracts were significantly different between the varieties regardless of the extraction temperature. The hull extract from the heating extraction was higher in Eohul than in other varieties, and was the lowest in the Dahyeon variety. The extract from Sohyeon hull at room temperature showed the highest contents of total phenolic and flavonoid contents. In the mung bean hull extract by heating, DPPH and ABTs radical scavenging activity ranged from 13.49-16.75% and 22.93-39.42% respectively and those at room temperature ranged from 39.86-41.88% and 49.71-70.92%. The reducing powers of extracts by heating ranged from 7.29 to 9.36 mg BHT/g hull, and at room temperature, they ranged from 19.90 to 20.97 mg BHT/g hull. Our results indicate that different extraction methods influenced antioxidant activities in the domestic mung bean varieties.

• Weed & Turfgrass Science
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• 제5권4호
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• pp.187-190
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• 2016

4-HPPD저해 제초제에 의한 주요 벼품종의 약해반응과 약제반응에 관여하는 유전자(HIS1) 특성을 구명하기 위해 본시험을 수행하였다. Benzobicyclon 액상수화제 처리에 Japonica 품종인 상주벼에는 백화증상의 약해증상이 발생하지 않았으며, Japonica 품종임에도 불구하고 삼백벼에서는 기준량에서는 2-3, 배량에서는 3-4의 백화증상의 약해가 발생하였으며, 산들진미, 금영 품종에서는 3-4 및 4-5의 약해증상을 보였다. 또한 Indica 품종인 IR-8 품종에서는 기준량에서 3~5, 배량에서는 4~6의 가증 심한 약해증상을 보였다. 4-HPPD저해 제초제애 대해서 약제반응에 관여하는 HIS1 유전자 보유여부를 확인하기 위해 일반계 품종인 상주벼와, 삼백벼, 산들진미, 금영과 통일형 품종인 IR-8품종으로부터 저항성 표적유전자와 동일 HIS1 유전자를 분리하였다. 각 품종별 HIS1유전자를 PCR등을 통해 염기서열을 확인한 결과 HIS1 유전자는 생태형에 상관없이 시험한 5품종 모두에서 HIS1유전자를 보유하고 있는 것으로 확인되어, 본 유전자로 HPPD 약해 발생 유무를 검증할 수 없음이 확인되었다.

• 한국버섯학회지
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• 제21권3호
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• pp.145-149
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• 2023

일부 버섯품목의 편중재배 해소를 목적으로 경쟁력이 있고 상품성 있는 백령느타리를 육성하고자 하였다. 국내 외에서 유전자원을 수집하고 교배하여, 특성검정 및 생산력 검정, 농가실증의 과정을 통해 육성된 백령느타리 신품종 '보람'의 주요 특성은 다음과 같다. 균사생장적온은 26~29℃, 발이 및 생육온도는 15~18℃이고, 병재배 기준으로 재배일수는 95일로 대조품종(우람)과 유사하였고, 형태는 둥근형으로 주걱형인 대조품종(우람)과 구별되었다. 병재배에서 자실체 갓의 직경과 두께, 대굵기는 각각 73.5 mm, 15.7 mm, 37.0 mm로 대조품종에 비해 갓 직경이 작지만 갓 두께와 대 굵기는 두꺼웠다. 병당 수량은 1,100 cc(∅ 75 mm)병 기준 181.1 g으로 대조품종(180.4 g)과 통계적으로 유의한 차이가 없었다. 경기도 여주 소재 병재배, 봉지재배 농가에서 실증한 결과, 재배방법과 배지량의 차이가 자실체 크기와 형태, 수량에 영향을 미치는 것으로 추정되었다. 신품종 '보람'을 대상으로 대치배양 하였을 때 대치선이 뚜렷하고, 균사체의 PCR 증폭 결과 밴드패턴이 모본 및 대조품종과 다른 양상을 보여 교배종임을 확인하였다.

• 한국응용곤충학회지
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• 제13권1호
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• pp.11-16
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• 1974

IRRI에서 선발된 Indica형 벼, IR 667계통에서 유내한 벼 및 Japonica형 국내장려품종을 공시하여 애멸구에 대한 저항성정도를 검정하고 나아가 내충성 기작으로 간주되는 식이선호성, 산란선호성 및 항충성(Antibiosis)을 시험하여 아래와 같은 결과를 얻었다 1. IRRI에서 선발된 19개 Indica형 벼품종 중 저항성반응을 보인 것은 H 105, Muthumanikam, Vellailangalayan, Karsamba Red ASD-7, Manavari Co 22, Mudgo, PTB-18, IR-18 및 IR 20 등 9개 품종이었고 TKM-6은 중도저항성(MR)이었으며 그밖에 것은 모다 감수성으로 나타났다. 국내재료중 IR 667에서 유래한 벼는 저항성반응을 보였으나 Japonica형 5개 장려품종은 모두 감수성반응을 나타내었다. 2. 저항성품종 ASD-7과 감수성품종 Jinheung(진흥)에 대한 식이선호성은 감수성품종에서 높고 저항성품종에서 낮았는데 접종 72특간후 Jinheung과 ASD-7 두 품종에 대한 선호율은 각각 $88.6\%$와 $11.4\%$이었다. 3. 저항성품종 ASD-7과 감수성품종 Jinheung에 대한 산난선호성은 식이선호성과는 달러 저항성품종에서 높고 감수성품종에서 비교적 낮았는데 두 품종에 대한 산난비율은 저항성품종에서 $58.6\%$, 감수성품종에서 $41.4\%$이었다. 4. 저항성품종에서는 약충의 사충율이 높았고 우화율이 낮았으며 반대로감수성품종에서는 약충의 사충율이 ?았고 우화율이 비교적 높았다.저항성반응을 보인 품종종에서도 IRRI 선발품종들은 $84\%$ 이상의 사충율을 보였으나 IR 667에서 유래한 Suweon 213-1(통일품종)은 $48\%$ Suweon 214$62\%$의 비교적 낮은 사충율을 보여 저항성품종이라도 항충성정도에 차이가 있었다. 5. 이상의 결과로 보아 애멸구에 대한 저항성품종은 Indica형 벼 품종에서 상당수를 찾아 볼 수 있었으며 그들 저항성품종의 내충성 기작은 우선 비식이선호성(Non-feeding preference)과 항충성이 관계하고 산란선호성은 관계하고 있지 않은 것으로 생각되었다.

• 농업과학연구
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• 제39권4호
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• pp.497-502
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• 2012

Since the year 2000, the production and consumption of broccoli have rapidly increased in Korea. And, the average production area and amount were about 1,700 ha and 29,000 ton for the past 5 years. Even with the increase of these cultivation and consumption, more than 95% of the broccoli seeds are currently imported from foreign countries such as Japan and Netherlands. Therefore, development of domestic broccoli varieties is needed to relieve Korean farmers' production cost for broccoli. In this situation, National Institute of Horticultural and Herbal Science (NIHHS) of Korea has tried to develop F1 hybrid varieties from elite lines that were obtained by microspore cultivation method from 2008. As the results, about 850 lines of broccoli were obtained and self-pollinated. Then their ploidy levels of the genome were confirmed to select double haploid (D.H.) lines. And the D.H. lines' horticultural traits were evaluated in open field. After the selection of 17 elite D.H. lines, they were cross-pollinated with a male sterile (MS) line to produce F1 hybrid seeds. After 2 to 3 years field trials of these F1 hybrid varieties at the area of Suwon, Gangneung, and Jeju respectively, two hybrid varieties such as 'Wongyo8011' and 'Wongyo8012' are selected for the application of variety protection. With these 4 years of research, we found that the microspore cultivation method is a powerful tool for the conventional breeding program, especially for the development of various inbred lines and even F1 hybrid varieties in short time.

• 한국초지조사료학회지
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• 제38권4호
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• pp.210-216
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• 2018

본 연구는 이탈리안 라이그라스 품종별 내한성 및 생육특성의 변화와 그에 따른 생산성 변화요인을 분석하기 위하여 2017년부터 2018년까지 우리나라 중부지역인 충남 천안에서 수행되었다. 이탈리안 라이그라스의 월동율은 품종 간에 차이가 있었으며(p<0.01), 외국품종보다 국내품종이 대부분 월동이 잘되었다. 조생종에서는 코윈어리의 월동율이 68%로 가장 높았고, Florida 80의 월동율이 35%로 가장 낮았으며, 중생종에서는 코윈마스터의 월동율이 70%로 가장 높았고, 외국품종인 Tam 90이 42%로 가장 낮았다(p<0.05). 외국품종 중에서는 Winter-hawk가 57% 월동하여 다른 외국 품종보다 월동율이 높았다. 건물수량은 품종 간 차이가 많았다(p<0.05). 조생종 중에서는 내한성이 강한 국내품종인 그린팜 2호와 코윈어리가 외국품종인 Florida 80보다 건물수량이 약 3~3.5톤/ha 많았다. 중생종 중에서는 내한성이 강한 국내품종인 코윈마스터가 외국품종인 Winter-hawk나 Tam 90보다 건물수량이 약 2톤/ha 많았다(p<0.05). 이탈리안 라이그라스의 내한성은 건물생산성과 고도의 정의상관이 있었다(p<0.01). 우리나라 중부지역에서 이탈리안 라이그라스를 5월 중순에 수확을 완료해야 한다면, 내한성이 강한 국내 육성 조생 또는 중생품종을 선택하여 재배하는 것이 양질 조사료 생산성 향상에 유리할 것으로 사료된다.

• 수산해양교육연구
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• 제3권1호
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• pp.44-49
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• 1991

The IMO has made constant efforts for global safety control of fishing vessels operation. As the result varieties of documents, for example, the international conventions, the resolutions, the recommendations and codes were adopted by the Organization. And the Organization contributed to preparing the international standards of marine safety by persuading the member countries to ratify and enforce the documents. The author inspected the content of IMO's activities and recent movement to ensure the safety of fishing vessels and their crew, and obtained the following results in connection with domestic regime. The first is the future prospect and countermeasure against revision and effectuation of "The Torremolinos International Convention for the Safety of Fishing Vessels, 1977". The Authority of Korean Government should make preparations to receive into national legislation as a performance of liability of a party country to the Convention. Secondly, the current domestic legal system has not any serious issues on the education and training for the fishing vessels crew. It is merely necessary to establish and operate the training course for the low grade marine officers.

• Journal of Biosystems Engineering
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• 제15권1호
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• pp.1-13
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• 1990

Aerodynamic property is the most important factor in designing the pneumatic separator and handling equipment for grains and seeds. Particularly the correct information about the terminal velocities of the corresponding grains and seeds is indispensible. However, a few studies with relation to the terminal velocities of grains and seeds were conducted in this country, even though the terminal velocities of the domestic grains and seeds are required to design those equiments which can be used for the domestic grains and seeds having specific aerodynamic properties. In this study, the terminal velocities for four varieties of varley and six varieties of paddy were investigated by means of two different methods, the suspension method and the drop method in an upward current of air. For measuring the terminal velocities, the vertical wind tunnel which had been examined about the uniform air flow in the previous study was used. In addition, the effect of the size of grains and the moisture content of grain kernel on the terminal velocity was examined. The following conclusions were derived from the study : 1. The different terminal velocities of grains are resulted from the different measuring methods. The terminal velocity measured by the drop method is smaller than that by the suspension method. It is considered that the difference in the terminal velocities is caused by the difference in the projection area of grain which is faced to the air stream. 2. The terminal velocity of grain increases as the size and the moisture content of the kernel increase. 3. The linear regression equations for the terminal velocities of grains were derived in terms of the moisture content of grains by the variety of grains and the measuring method. Also, the linear regression equations for the terminal velocity, based on the weighted size of grains, were derived in terms of the moisture contents of granis.

• 한국작물학회:학술대회논문집
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• 한국작물학회 2022년도 추계학술대회
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• pp.13-13
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• 2022

Recently, stable crop production is threatened by the effects of climate change. In particular, it is difficult to consistently maintain agricultural policies due to large price fluctuations depending on the difference in total domestic rice production from year to year. For stable rice production amid changes in the crop growing environment, development of varieties with improved disease resistance and abiotic stress stability is becoming more important. In here, drought and cold tolerant trait have been studied. First, for the development of drought tolerant varieties, we analyzed which agricultural traits are mainly affected by domestic drought conditions. As a result, it was observed that drought caused by the lack of water during transplanting season inhibits the development of the number of tiller and reduces the yield. 'Samgang' was selected as a useful genetic resource with strong drought tolerant and stable tiller number development even under drought conditions by phenotype screening. Three of drought tolerant QTLs were identified using doubled haploid (DH) population derived from a cross between Nacdong and Samgang, a drought sensitive and a tolerant, respectively. Among these QTLs, when qVDT2 and qVDTl1 were integrated, it was investigated that the tiller number development was relatively stable in the rainfed paddy field conditions. It is known that the high-yielding Tongil-type cultivars are severely affected by cold stress throughout the entire growth stage. In this study, we established conditions that can test the cold tolerance phenotype with alternate temperature to treat low temperatures in indoor growth conditions similar to those in field conditions at seedling stage. Three cold tolerant QTLs were explored using population derived from a cross between Hanareum2 (cold sensitive variety, Tongil-type) and Unkwang (cold tolerant variety, Japonica). Among these QTLs, qSCT12 showed strong cold tolerant phenotype, and when all of three QTLs were integrated, it was investigated that cold tolerant score was relatively similar to its donor parent, Unkwang, in our experimental conditions. We are performing that development of new variety with improved cold tolerant through the introduction of these QTLs.

• 한국초지학회:학술대회논문집
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• 한국초지조사료학회 2002년도 창립 30주년 International Symposium
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• pp.5-56
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• 2002

The problems in the current domestic forage production were evaluated, and the prospective improvement was suggested in this paper. Grassland development in forest, production of high quality forages in upland and paddy land, efficient utilization of rice straw, development of new varieties of forages suitable for our environmental conditions and imported forages were described Among them, preferential production and utilization of forages using paddy field after rice harvest . should be enlarged for domestic supply of forages in Korea. Several studies were carried out to select the promising forage crops and barley cultivars for whole crop silage production, to determine productivity, nutritive value and production cost of forages produced in paddy field, and feeding effect of forages with Hanuwoo and milking cow for whole crop silage with forages produced in paddy field, 1999 to 2001, and also discussed restraint factors and activation plans for enlargement of forage production in paddy land. The promising forage crops in paddy field were rye and barley for Middle region, and rye, barley, early maturing Italian ryegrass and wheat for Southern region. The promising barley cultivars for whole crop silage in paddy field were Albori in Suwon, Keunalbori, Milyang 92, Saessalbori, and Naehanssalbori in Iksan, and Keunalbori, Albori, Naehanssalbori, and Saegangbori in Milyang, respectively. Silage production, quality and animal palatability of silage by trench and round bale were also compared. The production yields of whole crop barley silage(WBS) were 17,135kg as a fresh matter, and 6,011kg as a dry matter per ha, and the quality of WBS was 2∼3 grade, while that of rice straw silage was 4 grade as a farm basis. The production cost of WBS per kg was 83won as a fresh matter, and 238won as a dry matter. Feeding of WBS as forages on Hanwoo was very desirable for the improvement of live-weight gain, beef quality and farm income, particularly in growing stage of Hanwoo. Milk production and income were also increased, and feed cost was decreased by feeding of WBS. The daily voluntary intake of WBS in milking cow was 26.3kg as a fresh matter(DM 7.7kg) per head. Milk production when WBS was fed, was very similar to that of imported hay feeding such as Kentucky bluegrass or domestic corn silage. The issues to be solved in near future f3r stable forage production and supply in paddy land are sustainable livestock-forages policy, development & seed production of new varieties of barley, rye, Italian ryegrass and other promising forages, efficient demand & supply system of forages, solidification for mass production and utilization of forages, efficient application management of animal slurry on paddy field considering environmental agriculture/livestock industry, and break k development of bottleneck technique in production field. Domestic production & supply of high cost agricultural machine (round baler, wrapper, handler and so on), plastic wrapping film, and silage additives are also important.