• Food Science and Biotechnology
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• 제14권4호
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• pp.466-469
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• 2005

Chinese cabbage (Brassica campestris L. Pekinensis) is Brassica vegetable that contains high amounts of glucosinolates. Glucosinolates and their breakdown products are thought to contribute to health promotion by preventing some cancers. Chinese cabbage is the most commonly consumed vegetable in Asian countries including Korea. In this study, qualitative and quantitative analyses of 3-butenyl glucosinolate (Gluconapin) from different cultivars and different parts of the cabbage were performed. Gluconapin of Chinese cabbage was extracted by hot ethanol ($80^{\circ}C$), isolated by an anion exchange column and identified by GC/MS and LC/MS. The levels of glucosinolates in Chinese cabbage varied according to the different parts, cultivars, and blanching time. In general, the concentrations of 3-butenyl isothiocyanate (ITC) were higher in the leaf than in the midribs parts. The cultivar 'Bulam no. 3' had a much greater content of 3-butenyl ITC than the cultivar 'Garak no. 1,' and the levels of butenyl ITC were highest after two weeks of storage. Blanching treatment decreased the concentration of 3-butenyl ITC. The ITC concentration varied extensively among different crops of the same species, and according to the different parts on the cabbage, the storage duration and the boiling time.

• 한국작물학회지
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• 제43권3호
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• pp.161-167
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• 1998

Root and shoot development of two rice (Oryza sativa L.) cultivars with different genetic backgrounds was studied with reference to their relative growth. Tongil type (indica-japonica hybrid) cultivar 'Kuemkangbyeo' and japonica cultivar 'Koshihikari' were grown in $5000^{-1}$ a Wagnar pots under flooded condition. Three plants with roots of both cultivars were taken in every phyllochron through the heading stage to record morphological characteristics of shoot and root system. Compared to Koshihikari, Kuemkangbyeo produced more tillers and had greater shoot weight and leaf area per hill. Length and weight of the root system in both cultivars increased exponentially with time. At the same time, root system development was significantly faster in Kuemkangbyeo than in Koshihikari after the panicle initiation stage. As a result, Kuemkangbyeo has a vigorous root system which consists of larger number of nodal roots compared to Koshihikari. Also, the root length and weight per unit leaf area of Kuemkangbyeo were larger than those of Koshihikari in the later half of growing period, which suggests possible higher physiological activity of the root system of Kuemkangbyeo which is known as a high-yielding cultivar. The relationship between root traits (crown root number, total root length, and root dry weight) and shoot traits (leaf area and leaf+culm dry weight) in both cultivars closely showed allometry until the flag leaf stage.

• 한국버섯학회지
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• 제19권3호
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• pp.246-250
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• 2021

갈색양송이 수집균주를 단포자교배하여 육성한 신품종 '진향'의 주요특성은 다음과 같다. '진향'의 균사배양, 초발이 소요일수, 자실체 발생소요기간은 대조품종인 '다향'과 차이없었다. '진향'의 갓두께는 '다향' 보다 두꺼웠으며, 갓색은 진했다, '진향'자실체 경도와 개체중은 '다향'보다 다소 높았고, 수량은 14.1 kg/m²로 '다향'의 13.1 kg/m²에 비해 8% 증수되어 양송이 재배농가에 보급이 가능할 것으로 예상된다.

• 원예과학기술지
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• 제31권5호
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• pp.648-651
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• 2013

'대왕' 품종은 농촌진흥청 국립원예특작과학원에서 2010년도 육성한 촉성재배용 신품종이다. 맛과 향이 우수하면서 경도가 강한 품종을 육성하기 위해 2006년 고당도 품종인 '매향'과 고당도 품종인 '원교3111호'를 교잡하여 육성하였다. '대왕' 품종의 주요 특성을 보면 초형이 직립형이고 초세는 매우 강하다. 화방당 꽃 수는 12-15개 정도로 적고 휴면타파를 위한 저온요구시간은 50-100시간 정도로 촉성재배용으로 적합한 품종이다. 과형은 원추형이고 과색은 연적색이며 평균과중은 16-17g 내외의 중대과형 품종이다. 과실의 당도는 $11.1^{\circ}Brix$, 산도는 0.39%로 당산비가 적절하여 식미가 좋으며 특히 과육 내 육질이 치밀하여 씹는 맛이 우수하다. 또한 경도가 $18.2g{\cdot}mm^{-2}$로 아키히메의 $10.3g{\cdot}mm^{-2}$ 보다 $7.9g{\cdot}mm^{-2}$이 더 높아 봄철 늦게까지 수확이 가능하다. 그리고 상품과율은 대조품종인 '아키히메'보다 높았으나 전체적인 수량은 유의적인 차이를 보이지 않았다. 그러나 탄저병과 고온에 다소 약한 경향이 있다.

• 한국작물학회지
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• 제62권4호
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• pp.311-316
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• 2017

The relationship between mean air temperature after heading and starch characteristics of colored rice grains was investigated using three colored rice cultivars. Pasting temperature within each rice cultivar with different harvest times differed. The pasting temperatures of two rice cultivars, Hongjinju and Joseongheugchal, reached the highest at 40 days after heading and decreased during the late harvest time. Distribution of amylopectin in the Hongjinju rice cultivar at the earlier harvest time contained a greater number of very short chains with the degree of polymerization (DP) between 6 and 12 and fewer chains with a DP from 13 to 24 than that of the later harvest time. However, there was little difference in the distribution of the longer chains of $25{\leq}DP{\geq}36$ and $37{\leq}DP$ for latter harvest times compared to that of the earlier ones. It was suggested that the structure of amylopectin affected the varietal differences in patterns of chain length of amylopectin during grain filling. In addition, the control of ripening was different from that causing the pigment effects in the fine structure of amylopectin in the three colored rice cultivars. Larger starch granules were observed in the Joseongheugchal rice cultivar and smaller granules occurred in the Hongjinju rice cultivar. The present study revealed that later harvest times led to a clear increase in the mean granule size of starch in the three colored rice cultivars.

• Journal of Plant Biotechnology
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• 제49권2호
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• pp.124-130
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• 2022

The application of traditional taro propagation methods for large-scale cultivation would be insufficient to meet the high demand for quality planting materials. Therefore, this study aimed to develop an in vitro micro-propagation technique for two local taro cultivars (cv.), Wangi and Putih. Taro cormels were collected from the Malaysian Agricultural Research and Development Institute (MARDI) germplasm (Serdang, Malaysia). Explants were taken from the shoot tip of cormels and initially cultured on Murashige and Skoog (MS) basal media for four weeks. The explants were then transferred to different multiplication media supplemented with different types and concentrations of cytokinins such as 6-benzylaminopurine (BAP ) and Thidiazuron (TDZ). Shoot production was quantified after six weeks of culture. The highest mean number of new shoots was produced by the Wangi cultivar on MS medium supplemented with 2.0 mg/l BAP (2.10 shoots), MS medium supplemented with 0.5 mg/l TDZ (2.18 shoots), and Gamborg B5 medium supplemented with 6.0 mg/l BAP (2.43 shoots). The maximum average number of the Putih cultivar shoots was obtained on MS supplemented with 2.0 mg/l BAP (3.57 shoots). MS basal media was used for root initiation, as it produced an average of 25 roots with an 11-cm length. Various types of substrate mixtures were used during acclimatization. The best acclimatization substrate for the Wangi cultivar was 100% peat soil, whereas the Putih cultivar grew optimally in a combination of peat and perlites at a 1:1 ratio. Taro plantlets require approximately 4 to 6 weeks to acclimatize before they can be transferred to the field.

• 한국식품저장유통학회지
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• 제18권3호
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• pp.328-334
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• 2011

폴리페놀화합물인 안토시아닌, 레스베라트롤, 쿼세틴, 카테킨, 에피카테킨류는 항암작용과 항산화작용을 하는 것으로 보고되고 있다. 본 연구에서는 다양한 국내 육성 포도 품종과 외국 도입 품종에 대하여 포도내 대표적인 폴리페놀계 화합물인 안토시아닌, 레스베라트롤, 쿼세틴, 카테킨, 에피카테킨류의 함량을 분석하였다. 전체적으로 카테킨 및 에피카테킨의 함량은 레스베라트롤과 쿼세틴보다 훨씬 높게 검출되었다. 폴리페놀계의 화합물은 과피색 간에 큰 차이는 보이지 않았으나, 동일 과피색내의 품종간에는 유의적인 차이를 나타냈다. 각 과피색 그룹에서 흑색 포도에서는 캠벨얼리, 청색 그룹에서는 세네카, 그리고 적색그룹에서는 베니가드 품종이 가장 높은 수치를 보였다. 성분별로 적게 함유하거나 전혀 검출되지 않는 품종도 일부 존재하였다. 이러한 결과는 향후 포도 육종개발 및 가공 분야에 응용되는 유용한 정보가 될 것으로 기대된다.

• 한국초지조사료학회지
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• 제43권3호
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• pp.183-189
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• 2023

It is widely known that forage corn is one of the most important crops in the production of silage and green chops during the summer months. In this study, the characteristics and the productivity of Kwangpyeongok, AGR 41, and Nero IT corn cultivars were evaluated in the regions of Jeju and Cheonan, Korea between 2021 and 2022. In each year, different corn cultivars were sown in different parts of the country on April 7 in Jeju and May 3 in Cheonan. The yield of three cultivars, Kwangpyeongok, AGR 41, and Nero IT were measured at the yellow-ripening stage, including the leaves and stems (Stover) and corn grain. Kwangpyeongok stover and total dry matter (DM) yields were slightly higher in Cheonan than in Jeju over the past two years. The quantity of corn cultivated in all cultivated areas was similar. The average yield of AGR 41, corn quantity and total DM were slightly higher in Jeju than in Cheonan. In terms of stover yield, and total dry matter content of the Nero IT cultivar cultivated in Jeju had a slightly higher yield than the cultivar cultivated in Cheonan. Based on this study, all cultivars can show some variations but not too much in terms of growth productivity and distinct characteristics depending on their location. Overall, AGR 41, and Nero IT cultivars in Jeju exhibit slightly higher levels of productivity than the same cultivars in Cheonan.

• 한국버섯학회지
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• 제16권3호
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• pp.186-191
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• 2018

큰느타리버섯 주요 수출시장인 유럽과 북미시장의 소비자에게 선호도가 높은 갓이 큰 형태의 큰느타리버섯 품종을 육종하기 위하여 육종모본 KNR2555를 자식교배하여 소규모 시험재배하여 갓형(Convex)와 갓직경(60.7 mm), 품질(4.9)을 기준으로 $2{\times}12$계통을 선발하였다. 선발된 계통을 갓애린이라고 명명하고 대량재배로 큰느타리2호와 생육특성을 비교하였다. 병당수량은 갓애린이가 71.7 g으로 대조품종 71.4 g과 통계적 유의성 없었다. 품질의 경우 갓애린이는 6.8, 큰느타리2호는 6.5로 나타났다. 생육소요일, 길이, 갓직경은 독립 t test로 분석한 결과 통계적으로 유의성을 보였다(각각 P < 0.001, P < 0.05, P < 0.001, P < 0.05). 고유성에 있어서는 URP1와 URP10에서 대조품종과 신품종이 다형성을 보였고, 대치배양에서도 뚜렷한 대선이 관찰되었다.

• 한국작물학회지
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• 제51권1호
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• pp.48-52
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• 2006

Naturally occurring soybean isoflavones are known to be influenced by various genetic and environmental conditions. Growth, yield, and isoflavone content were determined in four different cultivars of soybean grown under drained paddy and upland fields. Most of growth characteristics and yield components of four different soybean cultivars harvested in drained paddy field were greater than those in upland field, regardless of cultivar. By means of high performance liquid chromatography, total daidzein and genistein contents of soybean in drained paddy field were increased up to 40 and 35%, respectively, compared with those in drained paddy field. Besides isoflavone contents, the growth and yield of soybean were significantly affected by cultivar and field conditions, indicating the necessity of genetic program for soybean cultivars appropriate to drained paddy field conditions. In conclusion, converting paddy field into upland may effectively improve soybean cropping system, especially in terms of isoflavone increment under paddy field conditions.