• 한국작물학회지
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• 제44권2호
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• pp.159-162
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• 1999

This study was carried out to determine the optimum harvest date of unshelled immature peanuts and dried kernels from 60 to 120 days after flowering. Fresh pod yield of spanish-type variety, 'Shaedl-tangkong(SD)' reached a peak of 9,140kg/ ha at 70 (days after flowering(Aug. 13) while that of virginia-type variety, 'Daepoongtangkong(DP)' reached a peak of 8,820kg/ha at 90 days(Sept. 11) after flowering. SD and DP showed maximum fresh kernel yield of 6,090 and 6,470kg/ha at 90 days after flowering (Sept. 11), respectively, while dry kernel yield reached a peak of 3,300 and 3,720kg/ha at 110 days(Oct. 1), respectively. Oil content of SD and DP were the highest at 90 days and 100 days after flowering, respectively and the oil content of two varieties increased rapidly from 60 to 90 days. Tannin content of the seed hull of SD increased continuously until 110 days after flowering while that of DP maximized at 100 days. The tannin content of the two varieties increased rapidly from 60 to 100 days. Total sugar of SD and DP showed highest content at 60 days and 70 days after flowering, respectively and suger content decreased very rapidly until 80 days and after that sugar content kept nearly constant. Oil, tannin and total sugar content of spanish-type SD were higher than those of virginia-type DP.

• 한국작물학회지
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• 제25권4호
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• pp.81-85
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• 1980

Field experiment was conducted to determine the optimum harvesting time in winter rape (Brassica napus L.) by investigating the percent oil, 1, 000 seed weight, seed yield, dehiscent pod ratio and oil yield at 46, 50, 54, 58, 62, 66 and 70 days after flowering. Variation of all characters with days after flowering could be explained significantly by second degree polynomial equations. Percent oil and 1, 000 seed weight increased until 62 days after flowering and thereafter these traits decreased, while seed yield increased to 58 days after flowering and thereafter this trait decreased. This controversy was due to the drastic increase in dehiscent pods beyond 58 days after flowering which brought loss in seed yield. These results suggest that optimum harvesting time is 58 days after flowering and it should not be later than 60 days after flowering.

• 한국작물학회지
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• 제45권2호
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• pp.93-96
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• 2000

The present study was performed to obtain the basic information about growth and quality related characteristics and optimum harvesting time for podedible pea which is a new crop in Korea but believed to have a great deal of potentials for both domestic and overseas markets. They can be consumed either as a fresh succulent vegetable or as tender green pods. The daily green pod yield of pod-edible peas started to increase from ten days after flowering and the maximum yield was recorded on 26 days after flowering. Ninety percent of pod yields could be harvested from 16 to 36 days after flowering. Mean green pod yield for the tested varieties was approximately 8.0 t/ha. Total vitamin C content of pod-edible peas showed continuously decreasing trends from five days after flowering. The highest sucrose content was obtained at ten days after flowering. The highest panel score based on sweetness, chewiness, and hardness for the processed green pods was shown at 10-15 days after flowering in all varieties tested, indicating that the optimum harvesting time for pod-edible peas was considered to be 10-15 days after flowering.

• 화훼연구
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• 제18권4호
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• pp.271-277
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• 2010

본 연구는 춘란 야생 변이종의 육종을 위한 기초 자료를 얻고자 실시하였으며, 야생종의 개화시기를 꽃봉오리, 반개화, 개화, 개화 후 10일, 개화 후 20일의 5단계로 나누어 자가 수분시킨 후 삭과의 형태적 특성과 발아율을 조사한 결과이다. 착과율은 개화 후 20일에 교배한 것에서 100%로 가장 높았고, 삭과의 무게는 반개화 때 교배한 것이 가장 무거웠다. 5단계로 나누어 발아율을 조사한 결과 반개화에서 가장 높게 나타났으며, 교배 후 채종일수를 150일, 165일, 180일의 3단계로 달리하여 발아율을 조사한 결과에서는 교배 후 채종일수를 150일에 파종한 종자에서 5%로 가장 높게 나타났다. NaOCl 처리를 통한 발아율을 조사한 결과에서는 2%로 처리한 것에서 53.3%의 발아율을 보여 가장 좋은 결과를 나타내었다.

• 한국초지조사료학회지
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• 제43권3호
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• pp.138-147
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• 2023

Buckwheat (Fagopyrum esculentum), which is a traditional Korean crop, has been known as a health food due to its rich nutrition. This study was conducted to evaluate the change in flavonoid content of flowers and seeds during post-flowering growth of Korean tartary buckwheat variety 'Hwanggeummiso', with the aim of providing basic data for the development of functional food and feed additive. Tartary buckwheat took 69 and 99 days from the sowing date to reach the flowering and maturity stages, respectively. As a result of examining the flavonoid components of each part of tartary buckwheat, chlorogenic acid, rutin, and isoquercitrin of flowers increased from the flowering period on 22 May (0 days after flowering) to 42 days after flowering, while quercetin increased until 21 days after flowering and then decreased thereafter. In seeds, chlorogenic acid, rutin, and isoquercitrin were most abundant at the time of seed-bearing on 14 days after flowering, and showed a decreasing tendency thereafter. On the other hand, quercetin showed a tendency to increase until 21 days after flowering and then decrease. Overall, the flavonoid content was higher in flowers than in seeds, with rutin being particularly prominent. Based on this, the possibility as food materials and feed additives was confirmed using buckwheat produced in Korea.

• 한국작물학회지
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• 제41권1호
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• pp.103-108
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• 1996

풋콩의 품종별, 수확시기에 따른 품질특성의 변화를 관찰하여 얻어진 결과를 요약하면 다음과 같다. 1. 공시품종의 100립중은 4가지 모두 개화후 43일까지는 증가하였으며, 그 이후에는 감소하는 경향을 나타내었다. 2. 당함량은 도우야와 화엄풋콩의 경우 총당과 sucrose함량이 초기에 높다가 개화후 37일 이후에 감소하는 경향을 나타내었으며, 시로후미는 개화후 40일에 총당함량이 급격히 감소하였다가 개화후 43일부터 증가하는 경향을 보여주었으며, 시로후사는 당함량이 일정한 수준을 유지하였다. 3. 비타민 C 함량은 도우야와 시로후미는 개화후 37일 이후에 급격히 증가하다자 평형상태를 보였고, 시로후사와 화엄풋콩은 개화후 43일경에 최고치를 나타내었다. 4. 풋콩의 texture측정법으로 주로 사용하는 경도의 변화를 살펴본 결과, 개화후 일수가 증가할수록 경도가 증가하는 경향을 볼 수 있었다. 5. 수확시기별, 품종별 관능특성을 알아 본 결과, 수확시기에 따른 기호도의 차이가 나타났으며, 또한 관능특성간의 상관관계에서는 고소한 맛과 비린 맛이 강한 부의 상관을 나타내었다.

• 한국작물학회지
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• 제32권2호
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• pp.188-195
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• 1987

입당호밀, 두루호밀, 신기호밀(트리티케일), 그루밀, 메귀리 등 5개 품종에 대하여 미성숙종자의 초기 생육(27일간)을 조사하기 위하여 1985년 10월부터 1987년 2월까지 수원지방에서 행한 시험결과를 요약하면 다음과 같다. 1. 미성숙 종자의 천립중은 성숙기까지 계속 증가를 나타냈는데 (r=0.9000 이상), 입당호밀과 두루호밀은 개화후 35 일 (각각 6월 19일, 6월 24 일), 신기호밀, 그루밀, 메귀리 등은 개화후 30일 (각각 6월 29일, 6월 19일, 7월 9 일)에 천립중이 거의 최대에 달하였다. 2. 미성숙 종자의 발아율은 종자의 천립중 증가와는 상관이 높지 않았으며, 메귀리에서 개화후 5일에 49 %의 발아를 보였고 개화후 10 일부터는 94% 이상을 보였다. 기타 품종들도 어느 일정 시기이후에는 90％ 이상의 높은 발아율을 보였다. 3. 미성숙 종자에서 생육한 개체의 초장은 종실의 천립중과 고도의 정의 상관을 보였지만 신기호밀과 메귀리에서 개화후 20 일, 25 일, 30 일 (성숙기)에 수확한 종자의 유식물체간에 그루밀에서는 개화후 25일, 30 일 (성숙기) 간에 차이가 적었다. 4. 미성숙 종자에서 온 유식물체의 생체중과 건물중은 종실의 천립중과 고도의 정의 상관을 보였으나 신기호밀, 그루밀, 메귀리 등에서 개화후 25 일이나 30일에 수확한 종자의 유식물체들 간에 차이가 적었다. 5. 수원지방에서 청예용 종자로서 사용할 경우 입당호밀과 두루호밀은 개화후 35 일 (각각 6월 19일, 6월 24 일 ) 신기호밀, 그루밀, 메귀리 등은 개화후 25 일 (각각 6월 24 일, 6월 14 일, 7월 4 일) 에 수확하여도 청예수량이 크게 감소되지 않을 것으로 보인다.

• 동력기계공학회지
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• 제15권4호
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• pp.5-10
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• 2011

In case of using rapid vacuum-freeze drying for high quality dry flower of flowering plant, the morphological and physiological characteristics of dry rose showed as the following. The dry ratio of about 82% presented after 1 day in case of using rapid vacuum-freeze drying and it was reached that the optimum storage water content of general dry products was 18%. The dry ratio of about 89% presented after 4 days. This result indicates very short dry time comparing with natural dry time of 12 days. Also, the morphological characteristics of flowering plant in case of vacuum-freeze drying showed similar shape with real flower. The contraction decreased about 9% comparing with real flower under dry time of 72 hours. But the contraction in case of natural dry decreased 36% and showed noticeable difference. The brightness which affects physiological characteristics of dry flowering plant showed lower values according to the dry process and chromaticity was thick. After 4 days, natural dry was thick with about 2 times comparing with vacuum-freeze drying. In case of vacuum-freeze drying, the quantity of anthocyanin and chlorophyl which affect discoloration and bleaching of dry flowering plant showed the clear difference comparing with natural dry method due to the sublimation by vacuum after rapid freeze with short initial time.

• 한국작물학회지
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• 제36권6호
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• pp.540-544
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• 1991

유채의 협열개에 관한 기초자료를 얻고자 strain gauge를 이용하여 예취 후의 건조 중에 있는 유채 양질의 협열개 난역도를 측정하였던 바 다음과 같은 결과를 얻었다. 1. 협실의 발육에서 협은 개화 후 3-4일째에는 육안으로 볼 수 있었으며, 협장은 20일째 중에, 종자의 장경은 35일째에 최대에 달했고, 40일째 쯤에는 종자가 거의 구형으로 되었으며, 45일째 쯤에는 협의 굵기가 최대에 달했다 2. 예취 후의 협실수분함량의 추이는 예취 당시가 70%였고 house내에서 5일정도 건조한 결과는 30%에 달했고 14일째까지는 10%정도였다 3. 협열개 난역도는 협실수분함량이나 상대습도에 대응한 일변화가 보였으며 협실수분함량 및 상대습도가 낮을 수록 협열개가 어려웠다.

• 한국약용작물학회지
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• 제26권3호
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• pp.214-219
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• 2018

Background: This study was carried out to determine the best time for collecting ginseng berries without reducing the ginsenoside-Re content of ginseng roots, which are used as food, medicine, or cosmetic materials. Methods and Results: The test variety of ginseng used in this study was is Chunpung, which was collected from a 4-year-old ginseng field. Ginseng berries were collected at 7, 14, 21, 28, 35, 42, 49, and 56 days after flowering. The number of berry bunches per $1.62m^2$ ranged from 43.4 to 61.4, while the weight of berries per $1.62m^2$ was the greatest when they were collected 49 days after flowering. The root fresh weight per $1.62m^2$ was increased by 0.21 - 1.00 kg compared with that before the test, but root weight gain was decreased as the berry collection time was delayed. Total ginsenoside content of 4-year-old ginseng was the highest when berries were collected 7 days after flowering, while the ginsenoside-Re contents was the highest when collection was done 14 days after flowering. Conclusions: The most suitable period for ginseng berry collection was proposed to be from 14 to 21 days after flowering, as this is when the content of ginsenoside-Re, which is useful as a medicinal or cosmetic material, is still high and the ginseng root has not yet decreased in weight.