• 한국초지조사료학회지
• /
• 제16권3호
• /
• pp.208-214
• /
• 1996

This trial was conducted at two locations to compare forage yield, plant height, disease reaction, lodging and maturity of oat(Avm sativa L.) cultivars introduced from Western Australia in comparison with the control cultivar of oat 'Cayuse" over a period of 3 yr. At Suweon, Swan and Murray cultivars gave the highest forage yield, followed by Winjardie and Hay cultivars during 3 years of trial, but Cayuse cultivar gave the lowest forage yield. At Sunghwan, Hay and Swan cultivars tended to forage yield more than other cultivars, but Cayuse cultivar was among the lowest yielding. AU the cultivars in the trial were moderately resistant to BYDV and lodging at two locations although differences exist among cultivars. Murray cultivar was early in maturity, while Swan, Hay and Winjardie cultivars showed medium, and Cayuse cultivar was later. Murray and Swan cultivars were tall in height and gave a higher dry matter percentage of 18~20% at harvest. The results of the trial indicated that Swan and Murray cultivars could be recommended as the national recommended forage oat cultivar when forage performance was considered.ered.

• Plant Biotechnology Reports
• /
• 제2권1호
• /
• pp.41-46
• /
• 2008

Salinity stress is a major limiting factor in cereal productivity. Many studies report improvements in salt tolerance using model plants, such as Arabidopsis thaliana or standard varieties of rice, e.g., the japonica rice cultivar Nipponbare. However, there are few reports on the enhancement of salt tolerance in local rice cultivars. In this work, we used the indica rice (Oryza sativa) cultivar BR5, which is a local cultivar in Bangladesh. To improve salt tolerance in BR5, we introduced the Escherichia coli catalase gene, katE. We integrated the katE gene into BR5 plants using an Agrobacterium tumefaciens-mediated method. The introduced katE gene was actively expressed in the transgenic BR5 rice plants, and catalase activity in $T_1$ and $T_2$ transgenic rice was approximately 150% higher than in nontransgenic plants. Under NaCl stress conditions, the transgenic rice plants exhibited high tolerance compared with nontransgenic rice plants. $T_2$ transgenic plants survived in a 200 mM NaCl solution for 2 weeks, whereas nontransgenic plants were scorched after 4 days soaking in the same NaCl solution. Our results indicate that the katE gene can confer salt tolerance to BR5 rice plants. Enhancement of salt tolerance in a local rice cultivar, such as BR5, will provide a powerful and useful tool for overcoming food shortage problems.

• 한국작물학회지
• /
• 제34권1호
• /
• pp.48-54
• /
• 1989

외국에서 도입한 32개의 서로 다른 Alfalfa 품종을 우리나라 기후풍토에서 재배하여 초장과 건물중 등의 생육상태를 비교 검사한 결과 가장 우수한 생육상태를 나타낸 품종들은 다음과 같다. 1. 초장생육이 우수하였던 상위 7개 품종들은 Diamond>Milkmaker> Arrow>Chalienger>Sapphire > Dekalb brand 135> LS-1920의 품종순이고 최하위 초장의 7개 품종을 하위순으로 열거하여 보면 Pioneer brand 5929> Maxidor> Dekalb brand 167> Pierce> Blazer> Raidor> Pioneer brand 532의 순이었다. 2. 건물중이 많은 상위 7개 품종은 Pike>LS-1920>Challenger>Salute>Diamond>Decathlon>Pioneer brand 581의 품종순이며 최하위 건물중의 7개 품종은 Maxidor>Pioneer brand 5929>Pioneer brand 532>Florida 77> Pierce> Magnum> Blazer의 순이었다. 3. 초장과 건물중의 결과를 비교하여 보면 대체로 초장에서 우수하였거나 열거하였던 품종들이 역시 건물중에서도 우세하거나 열거하여 서로가 비례하는 결과를 보였다. 4. 이상에서 조사한 바와 같이 가장 좋은 생육상태 및 수활량을 보인 품종들은 Pike, LS-1920, Challenger, Salute, Diamond 등이었으며 이들중 Challenger 품중을 제외한 나머지 품종들은 내한성이 중간정도인 Semi-dormant 계통으로 우리 나라 재배환경에 가장 적합할 것으로 생각된다.

• Journal of Applied Biological Chemistry
• /
• 제59권4호
• /
• pp.337-343
• /
• 2016

배는 과즙이 풍부하고 단맛이 뛰어나 우리나라에서 가장 즐겨 먹는 과일 중의 하나이다. 현재 국내에서 재배되고 있는 '신고' 품종의 재배면적은 81.5 %를 차지하고 있으며 대부분 생과로 소비하고 있다. 이러한 단일 품종의 편중화로 배의 재배 면적의 13.3 %를 신품종으로 갱신하고 있다. 최근 신품종 등 다양한 배에 대한 소비자의 요구가 커지고 있어 '신고' 품종에 대한 소비가 현저히 감소하고 있으며 그 수요는 증가하지 않는 실정이다. 이를 극복하기 위해 다양한 신품종 배들이 도입되고 있으며, 이들의 물리적, 화학적 및 생리활성 연구도 활발히 진행되고 있다. 따라서 본 연구에서는 지금까지 연구해 온 신품종 배들의 이화학적 및 항산화 활성에 대해 소개하고자 한다.

• 한국식품과학회지
• /
• 제53권4호
• /
• pp.434-445
• /
• 2021

본 연구에서는 국내 육종 양파[황색(맵시황, 신선황, 연신황, 영보황, 영풍황), 적색(엄지나라), 연녹색(스위트그린)]와 외국 육종 양파(황색, 선파워; 적색, 천주적) 간의 일반형질, 주요성분 및 항산화능을 비교하였다. 그 결과, 각 페놀성 화합물과 flavonoid의 성분별 총 함량 및 총 페놀성 화합물과 총 flavonoid 함량에 있어 외래품종인 썬파워를 포함한 6종의 황색양파들 중 영보황이 가장 우수한 값을 보였으며, 적색품종에 있어서는 천주적이 엄지나라보다 약간 높은 함량을 보였다. 총 anthocyan의 함량은 엄지나라가 천주적보다 낮았다. 반면 thiosulfate의 함량은 모든 품종들에 있어 유의차를 보이지 않았으며, pyruvic acid 함량은 황색양파들 중 영보황과 썬파워가 동일한 정도로 가장 높았고, 적색품종에 있어서는 엄지나라가 천주적보다 더 높은 함량을 보였다. 그러나 총 당함량에 있어서는 영신황이 썬파워를 제외한 모든 품종들 중 가장 높은 값을 보였다. 그리고 항산화능은 모든 평가항목에 있어 공통적으로 적색품종이 가장 우수하였으며, 환원력에 있어서는 천주적이 엄지나라보다 우수하였으나 DPPH radical scavenging 활성은 천주적보다 엄지나라가 다소 높은 경향을 보였고, ABTS⁺ radical scavenging 활성은 두 품종들 간에 유의차를 보이지 않았다. 황색품종들에 있어서는 신선황과 영보황이 우수한 DPPH radical scavenging 활성을 보였으며, 환원력은 국내산 품종들이 썬파워보다 약간 높은 경향을 보였고, ABTS⁺ radical scavenging 활성은 영신황이 썬파워보다 높았다. 이상의 결과로부터 국내 육성 품종인 영보황과 엄지나라의 성분학적 및 기능학적 우수성이 부분적으로 제시되어진 바, 본 연구결과가 국산 양파 품종의 우수성 홍보를 위한 유용 자료로 활용되기를 기대한다.

• 한국초지조사료학회지
• /
• 제24권2호
• /
• pp.177-182
• /
• 2004

본 시험은 우리나라에 도입된 베치류를 중부지방에서 재배하여 수량 및 생육특성 조사를 통하여 월동성이 높은 품종을 구명하기 위하여 1999년부터 2000년까지 축산기술연구소 초지사료과 시험포장에서 수행하였으며 그 결과는 다음과 같다. 공시된 8 품종중에서 Namoi, Victa, Aneto의 경우는 전 주수가 동사한 것으로 나타났으며 월동된 품종의 개화기는 자운영이 가장 빨랐으며 Common품종이 5월 22일로 가장 늦었다. 평균 건물함량은 14.7%로 낮게 나타났다. 조단백질 함량은 평균 20.9%를 나타내었으며 Common이 23.1%로 가장 높았고 자운영의 경우는 18.0%로 가장 낮았다. ADF 및 NDF 함량은 평균 33.5 및 42.1% 이었으며 상대사료가치는 1등급 이상으로 나타났다. 베치류의 생산성은 월동성에 따라 많은 차이를 보였는데 Common 품종의 건물 수량이 8,664kg/ha. 가장 높았으며 Haymaker plus가 5,756kg/ha로 우수한 편이었으며 Cappelo및 Popany품종은 각각 3,004 및 2,114kg/ha를 보여 생산성이 떨어졌다. 조단백질 및 TDN 수량에 있어서도 월동율이 가장 높았던 Hairy vetch "Common" 품종에서 수량이 높게 나타나 월동성에 따른 생산성의 차이가 많아 우선적으로 월동성이 고려된 후에 베치류의 도입이 고려되어야 할 것으로 판단되었다.

• 원예과학기술지
• /
• 제35권3호
• /
• pp.387-391
• /
• 2017

Kiwifruits introduced to Korea typically have green fruit flesh, yellow flesh, or yellow flesh with red coloration around the core. Here, we describe a new cultivar called 'Redvita', the first kiwifruit cultivar of Korea with yellow flesh and red coloration around the core. A conventional field cross was conducted in 2003, and permission for the final release of 'Redvita' was obtained in 2012. 'Redvita' originates from 'Red Princess', a maternal vine known for the red coloration in its flesh. The pollinizer is 'NHK0013' (IT233175), which blooms in early May. A principal feature of 'Redvita' is its high vitamin C content, which at an average of 140 mg per 100 g of fresh weight is 2 - 4 times higher than other commercial cultivars. The average fruit weight is 97 g; bigger than that of the control cultivar 'Hongyang'. 'Redvita' blooms in mid-May and is usually harvested in early to mid-October, approximately 150 - 160 days after anthesis. 'Redvita' produces 3 or 4 flowers per fruiting shoot, with no small lateral flowers, therefore does not need to be thinned before blooming for commercial production. The cultivar is acidulous because of a high titratable acidity content (about 1.5%), which is higher than other cultivars (less than 1.0%). 'Redvita' was registered with the Korean Seed and Variety Service in 2015 for plant variety protection rights (no. 5604).

• ALGAE
• /
• 제37권2호
• /
• pp.85-103
• /
• 2022

Korea is one of the most advanced countries in kelp aquaculture. The brown algae, Undaria pinnatifida and Saccharina japonica are major aquaculture species and have been principally utilized for human food and abalone feed in Korea. This review discusses the diversity, population structure and genomics of kelps. In addition, we have introduced new cultivar development efforts considering climate change, and potential carbon sequestration of kelp aquaculture in Korea. U. pinnatifida showed high diversity within the natural populations but reduced genetic diversity in cultivars. However, very few studies of S. japonica have been conducted in terms of population structure. Since studies on cultivar development began in early 2000s, five U. pinnatifida and one S. japonica varieties have been registered to the International Union for the Protection of New Varieties of Plants (UPOV). To meet the demands for seaweed biomass in various industries, more cultivars should be developed with specific traits to meet application demands. Additionally, cultivation technologies should be diversified, such as integrated multi-trophic aquaculture (IMTA) and offshore aquaculture, to achieve environmental and economic sustainability. These kelps are anticipated to be important sources of blue carbon in Korea.

• 한국작물학회:학술대회논문집
• /
• 한국작물학회 2017년도 9th Asian Crop Science Association conference
• /
• pp.12-12
• /
• 2017

Genetic improvement in potato can be carried out through several approaches, as sexual crosses, somatic hybridization, mutation and genetic engineering. Although the approach is different, but the goal is the same, to get a superior cultivar. Mutation and genetic engineering are very interesting methods for genetic improvement of potato plants. Mutation by gamma-ray irradiation have been performed to get some new potato cultivars which are more resistant to disease and have higher productivity. We have carried out a mutation of some potato cultivars and obtained some excellent clones to be potentially released as new superior cultivars. By the mutation method, we have released one potato cultivar for the French fries industry, and we registered one cultivar of potato for chips, and two cultivar for vegetable potatoes. Actually we are doing multi-location trial for three clones to be released as new cultivars. Through genetic engineering, several genes have been introduced into the potato plant, and we obtained several clones of transgenic potato plants. Transgenic potato plants containing FBPase gene encoding for fructose bisphosphatase, have a higher rate of photosynthesis and higher tuber productivity than non-transgenic plants. This result suggests that FBPase plays an important role in increasing the rate of photosynthesis and potato tuber productivity. Some transgenic potatoes containing the Hd3a gene are currently being evaluated for their productivity. Over expression of the Hd3a gene is expected to increase tuber productivity and induce flowering in potatoes. Transgenic potato plants containing MmPMA gene encoding for plasma membrane ATPse are more tolerant to low pH than non-transgenic plants, indicating that plasma membrane ATPase plays an important role in the potato plant tolerance to low pH stress. Transgenic potato plants containing c-lysozyme genes, are highly tolerant of bacterial wilt diseases caused by Ralstonia solanacearum and bacterial soft rot disease caused by Pectobacterium carotovorum. Expression of c-lyzozyme gene plays an important role in increasing the resistance of potato plants to bacterial diseases.

• 한국작물학회지
• /
• 제43권1호
• /
• pp.54-58
• /
• 1998

Four introduced forage rape cultivars 'Akela', 'Ramon', 'Sparta', and 'Velox' and a leading rapeseed cultivar Hall-ayuchae were seeded on 1 October 1994 on 20-cm rows at seeding rates of 3, 5, 7, 10, 13, and IS kg/ha to select the best adapted forage rape cultivars and to determine the optimum seeding rate in the Cheju area. Days to flowering of each cultivar was not significantly affected by seeding rate. Average plant height increased from 151 to 164 cm as seeding rate increased from 3 to 10 kg/ha and then decreased to 156 cm at 15 kg/ha. Stem diameter linearly decreased with increasing seeding rate. The optimum seeding rate for the greatest dry matter and protein yields of five cultivars ranged from 10.7 to 11.8 and 10.8 to 14.4 kg/ha, respectively. Dry matter yields of five cultivars ranged from 7.72 and 22.01 Mg/ha. Sparta produced the greatest dry matter yield, followed by Akela, Ramon, Hallayuchae, and Velox. Crude protein yields of five cultivars ranged from 0.29 to 1.08 Mg/ha. Sparta produced the greatest crude protein yield, followed by Akela, Ramon, Velox, and Hallayuchae. As seeding rate increased, crude protein content linearly increased but crude fiber content linearly decreased. The forage cultivars had higher crude protein and lower crude fiber than the oilseed cultivar Hallayuchae. Our results demonstrate that Sparta was the best adapted cultivar to Cheju area and the optimum seeding rate for Sparta was about 10 kg/ha.