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$\gamma$-ray 조사에 의한 제주산 양파의 발아 및 성분변화
박용봉,김재하,김기택 한국생물환경조절학회 2000 생물환경조절학회지 Vol.9 No.4
제주지방에서 양파 저장에 관한 ${\gamma}$-ray 처리와 저장장소에 대한 실험을 하였다. 발아율은 저온저장, 상온저장, 동굴저장에 관계없이 무처리 양파는 약 5개월 째부터 발아와 발근이 시작되었고 시간이 지날수록 증가하였으나 8월 상순경에는 0krad에서 동굴에 저장한 것은 50%, 상온에 저장한 것은 20%의 발아율을 나타내었다. 그러나 3krad, 6krad 처리한 것은 6개월까지는 거의 발아하지 않았다. 중량 감소는 발아와 밀접한 관계가 있는데 발아가 시작하기 전 40일 까지는 모든 처리에서 차이가 없었지만 발아가 시작되면서부터 급격히 감소하였다. 저온저장한 것은 부패율이 약 5~10% 내외로 7개월 후에도 식용이 가능하였으나 상온에 저장한 것은 0krad에서 50%정도 부패한 반면 3krad 및 6krad를 조사한 것은 저온저장인 경우 5%, 동굴저장인 경우 30~35%, 상온에 저장한 것은 30% 정도의 부패율을 나타내었다. 방사선조사의 다당류 변화에 대한 연구는 비교적 많이 이루어졌는데 동굴저장과 상온저장에서는 저장초기에는 3krad 및 6krad 조사한 것이 0krad 보다 다소 증가했으나 후기로 갈수록 역시 처리한 것이 양은 적으나 0krad보다는 증가한 사실을 알 수 있었다. Allum속 채소류에 많이 들어있는 유황은 저장장소에 관계없이 0krad에서는 저장후반기로 갈수록 적어졌고 냉장저장한 것은 3krad 및 6krad의 선량간에는 다소 차이가 있었으나 저장초기에는 유황함량이 증가하다가 12월 말경 부터는 점차 감소하는 경향을 보였다. For extension of storability, onion bulbs produced in Cheju Island were exposed to ${\gamma}$-ray irradiation at a dosage of 0, 3, or 6Krad and stored in a natural cavern, or in low (2$^{\circ}C$) or ambient temperature storage condition. Sprouting began from approximately five months in storage, regardless of storage condition, and increased as the storage period increased. From early August, sprouting as high as 50% occurred in the natural storage cavern, and 20% in ambient temperature storage when bulbs were treated with 0 krad ${\gamma}$-ray. However, bulbs treated with 3 or 6krad ${\gamma}$-ray did not any sprouting until six months in storage. No significant weight loss was observed in all treatments until sprouting occurred from 40 days after the initiation of storage. Weight loss, however, increased remarkably after 40 days in storage, indicating that it was closely related to sprouting during storage. Bulbs stored at 2$^{\circ}C$ showed 5~10% rot, but were still edible. Percent rot reached to as high as 50% in bulbs unirradiated and stored at ambient temperatures after seven months, while it in irradiated bulbs reached to 5, 33, and 30% at 2$^{\circ}C$, in a natural cavern, and ambient temperatures, respectively. Sugar contents slightly increased in irradiated bulbs in the later storage period under ambient temperatures, while sugar contents in irradiated bulbs in the later storage period under ambient temperatures, while sugar contents in Allium vegetables generally decrease in later storage if unirradiated. Sulfur content slightly increased in irradiated bulbs in the early storage period and decreased gradually in all treatments in the later storage stage.
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제주지방에서의 6쪽마늘 재배법 개선에 관한 연구 : 1. 파종기가 마늘의 생육 및 인경비대에 미치는 영향
박용봉 제주대학교 1984 논문집 Vol.17 No.-
This experiment was conducted during the period from September 2, 1982 to June 5, 1983 in order to examine the suitable planting time and growing condition in Cheju Island using the Sourthem garlic (Cheju jaere) and Nourthem garlic (6-clove garlic). 1. The earlier the garlic was planted, the higher the top part growth and 6-clove garlic decreased more than in early period. However, rather higher than Cheju jaere from the beginning of May. 2. The earlier the Cheju jaere was planted, the plant weight, top part weight increased remarkable more than 6-clove garlic. 3. As the bulb index was below 0.5 in the bulb formation of Cheju jaere, there was no difference between the planting time, but because the bulb formation of 6-clove garlic was over 0.5, the bulbing was slowing down. 4. Cheju jaere differentiated the clove in March. 10 and 6clove garlic April. 2 but the earlier the garlic was planted, the earlier clove differentiation and there was about 25 days difference between two varieties. 5. The later the Cheju jaere garlic was planted, the secondary growth increased. However, the earlier the 6-clove garlic was planted, the secondary growth increased.
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박용봉,박문조,한원탁 제주대학교 1986 논문집 Vol.23 No.-
This study was performed to investigate: The ecological difference of two ecotypes "Seushan (northern) and "Cheju(southern)" The effect of temperature (low. high. alternative) and long day treatments on the growth and bulb formation in two ecotypes Translocation of growth regulators and contents of total sugars in garlic plants Identification of isozyme existing in garlic plants by the electrophoretic method. The results are summarized as follows: 1. The experiment of temperature and long day treatments. Sprouting and early growth of the southern type were accelerated by low iemperature treatment but those of long day treatment were not affected. In plant height and leaf sheath length. the southern type was increased more than the northern type until March 20 and the plants that were treated with low temperature were increased considerably as compared with the control There was no difference in the total leaf numbers between two ecotypes but low temperature treatment romoted those as compared to the control. 2. Ecological experiment of two regions The plant height of the southern type was accelerated until March 25 i n Cheju and March 10 in Suweon. but the plant height of the northern type was promoted after April 20. The growth of leaf length and leaf sheath lentth showed no dlfference durting winter. but after March 10 the southern type was increased in Suweon and Cheju. there was no difference in clove number and bulb weight within the regions and seeding time. but those of the southern type were increased as compared with the northern type 3 Analysis of sugar Low temperature treatment tended to increase concetrations of sugar as compard with control and the difference between cultivats was clear Friictosan was increased as the plants grew. especially at the later period of the whole growth with ever): treatment 4 Bioassay at growth regulators Af Rf 0.5-0.6 and Rf 0.4-0.5 Glbgberellin-like substances were detected from the leaf and leaf sheath of northern type and inhibitors were detected at Rf 0.7-0.9 While 5. The change of Isozyme patterns It was noted that the isozyme patterns were similar between two ecotypes in peroxidase. There was no difference at the bands which means acid phosphatase in two types. There were three or four bands which showed Malate dehydrogenase. but also showed the similar tendency according to the cultivars and every parts.
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제주지방에서 키토산 처리가 가을감자의 생육과 수량에 미치는 영향
박용봉,양국남,김기택 (사) 한국생물환경조절학회 2001 시설원예‧식물공장 Vol.10 No.4
This experiment was conducted to investigate the effect of chitosan on the growth and yield of fall-planted potatoes. The research was carried out in fall-planted potatoes from August 2000 to April2001 at the height of 250 m above sea level in Jeju Island. Soaking for 30 min. of seed potatoes in 20times diluted solution of 3% liquid chitosan shortened days to emergence by 4 to 6 days. Stem length,number of stems and number of stolons per plant were 56.5 cm, 4.3, and 19.0, respectively, when seedpotatoes were soaked for 30 min. in 20 times diluted solution of 3% liquid chitosan. Total potatoyield in this treatment reached 2,963 kg per 10a and was significantly greater than in other treat-ments. Yield of marketable tubers (greater than 30 g) per 10a for treatment of seed potatoes soakingin 20 times diluted solution of 3% liquid chitosan and for treatment of foliage spray with 200 timesdiluted solution of 3% liquid chitosan plus chitosan powder (10 kg per 10a) mixing with soil was2,761 kg and 2,628 kg, respectively. Contents of Mg, Fe and B were the greatest in the treatment of 30min. soaking of seed potatoes in 200 times diluted solution of 3% liquid chitosanm. The increased con-tents of these elements are considered to have caused yield increase as a result of increased chloro-phyll content for photosynthesis.
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