• 한국연초학회지
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• 제17권1호
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• pp.15-19
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• 1995

This study was made of the effects from exposure to air temperature and amount of solar radiation during the wilting period on the sunburn of burley tobacco. Tobacco stalks were cult with one hour interval from 8:00 to 16:00, and were left on the field to expose to weather, and tobacco single leaf placed under 4 temperatures regimes in indoor. Sun-burn of the leaves was occurred when the leaves were exposed to temperature higher than 33$^{\circ}C$, and to solar radiation more than 800w/$m^2$ between 11:00-15:00 in a day during the curing season. The leaf temperature was increased until 52$^{\circ}C$ under the weather condition. The tobacco leaves were also burned without solar radiation when the leaves were exposed to high temperature until 5$0^{\circ}C$ of leaf temperature. Sun-bum was increased at upper leaves and at higher moisture content of leaf.

• 식물병연구
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• 제27권2호
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• pp.76-78
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• 2021

Cnidium officinale is a perennial herb belonging to the family Umbelliferae. Its origin is China and is also distributed in Korea and Japan. In 2017, a phenomenon of browning and wilting of leaves was discovered in the cultivation field of the National Institute of Forest Science, Suwon, Korea. The pathogens isolated from plants were consistent with Fusarium solani as a result of morphological examination and molecular phylogenetic analysis. This is the first record of F. solani on C. officinale in Korea.

• 한국산림과학회지
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• 제78권2호
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• pp.248-253
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• 1989

• Journal of Plant Biotechnology
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• 제2권2호
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• pp.83-87
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• 2000

Carnation petals exhibit autocatalytic ethylene production and wilting during senescence. The autocatalytic ethylene production is induced by the expression of 1-aminocyclopropane-1-carboxylate (ACC) synthase and ACC oxidase genes, whereas the wilting of petals is related to expression of the cysteine proteinase (CP) gene. Until recently, it has been believed that these two phenomena, autocatalytic ethylene production and wilting, are regulated in concert in senescing carnation petals, since the two phenomena occurred closely in parallel. Our studies with petals of a transgenic carnation harboring a sense ACC oxidase transgene and petals of carnation flowers treated with 1,1-dimethyl-4-(phenylsulfonyl) semicarbazide showed that the expression of ACC synthase and ACC oxidase genes and that of CP are regulated differently in carnation psanetals. Interestingly, in the petals of transgenic carnation, the transcript for CP was accumulated but the transcripts for ACC synthase and ACC oxidase were not accumulated in response to exogenous ethylene. Based on these results, we hypothesized that two ethylene signaling pathways, one leading to the expression of ACC synthase and ACC oxidase genes and the other leading to the expression of CP gene, are functioning in senescing carnation petals.

• 한국토양비료학회지
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• 제42권4호
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• pp.301-306
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• 2009

이 연구의 목적은 건강한 작물과 시들은 식물의 질소대사와 아스코리빈산 함량의 차이를 비교하는것에 있다. 시듬은 인공적으로 유도되었으며, 그방은 질소과다 시비 및 저칼륨 시비에 의한 것으로4개의 처리구를 두었다. 1N-1P-1K (control), 6N-1P-0K (0K), 6N-1P-0.5K (0.5K), and 6N-1P-2K (2K). 시듬 정도는 control, 0%; 2K, 10%; 0.5K, 40%; and 0K, 70%. 식물 생장에는 고질소 저 칼륨 처리구에서는 그리 큰 차이가 없었으며 질산태질소의 함량은 control 구와 비교하여 고 질소 처리구가 높았으며, 아스코리빈 산 함량은 고질소 처리구가 control구에 비하여 낮았음을 확인 할수 있었다.

• 한국초지조사료학회지
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• 제3권2호
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• pp.92-99
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• 1983

재료(材料)의 예건수준(豫乾水準)에 따른 건물함량(乾物含量)이 사일리지 품질(品質)에 미치는 影響(影響)을 알고져 1981년(年) 11월(月) 11일(日)에 호밀과 이탈리안라이그라스를 수확하였다. 예건(豫乾)에 의하여 재료(材料)의 건물함량(乾物含量)을 15.8%에서 53.2%까지 4수준(水準)으로 조절하였으며 사일리지는 폴리에틸렌필름봉지에 넣어 실온에 저장하였다. 1. 유기산(有機酸)의 함량(含量)은 재료(材料)의 건물함량(乾物含量)이 증가(增加)됨에 따라 감소(減少)하였으나 총산에 대한 유산(乳酸)은 증가(增加)하였다. 2. 건물손실(乾物損失)은 재료(材料)의 건물함량(乾物含量)이 증가(增加)함에 따라 감소(減少)하였다. 3. 사일리지의 품질(品質)은 건물함량(乾物含量)이 증가(增加)함에 따라 양호(良好)하였다. 4. 암모니아태질소는 건물함량(乾物含量)이 증가(增加)함에 따라 감소(減少)했다. 5. Invitro 건물소화율(乾物消化率)에는 건물함량(乾物含量)에 의한 차(差)가 없었다.

• 농업과학연구
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• 제37권2호
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• pp.171-175
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• 2010

This study was carried out to find the effect on growing media and proper time for water supply in rice seedling stages. Plant height of rice seedling for SIPAN-BRL among current several growing medias was higher in Chuchungbyeo than Ilpumbyeo, and that of root length was higher in check among used growing medias. Fresh and dry weight of shoot and root of two rice cultivar. Water time to absorption on each treatment of growing media concentration took similarly in SIPAN-BNH and check were similar. But 500 minutes did in 100ppm and did 370 and 470minute in 300 and 500ppm, respectively. Wilting time of rice seedling was appeared highly at 300ppm of SIPAN-BRL in Chuchungbyeo and 100ppm of SIPAN-BRL in Ilpumbyeo, while it prolonged at 300ppm in Chuchungbyeo and 500ppm in Ilpumbyeo, respectively. Water content at wilting stage was appeared highly at SIPAN-BRL 500ppm in both Chuchungbyo and Ilpumbyeo, while SIPAN-BNL was high in 300ppm of Chuchung-byeo and Ilpumbyeo, respectively. Plant and root length of SIPAN-BNL treated with 300ppm in 10day-rice seedling were highly appeared, while dry weight of shoot was high at 300ppm SIPAN-BNL.

• 식물병연구
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• 제18권2호
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• pp.123-128
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• 2012

We investigated the resistance of 50 commercial Chinese cabbage cultivars against clubroot disease caused by Plasmodiophora brassicae in the three difference fields, Suwon, Hwacheon, and Pyeongchang. Wilting symptom on Chinese cabbage was first observed at 15 days after transplanting in Pyeongchang and Hwacheon, while disease symptoms appeared later in Suwon after the rainy season. Among 50 cultivars, eight cultivars, SC26, SC29, SC30, SC31, SC34, SC46, SC47 and SC50 showed highly susceptible symptoms like wilting and heavy root galls in all three fields. Meanwhile, seven cultivars such as SC05, SC06, SC07, SC09, SC11, SC17, and SC36 showed moderate resistance with delayed wilting and few root galls. Only two cultivars, Chuwol (CB22) and Gohyangssam (CB23) were highly resistant to clubroot disease until the harvest season in all of the three fields. These two commercial cultivars may be considered as candidate cultivars for cultivation of organic Chinese cabbage in Suwon, Hwacheon, and Pyeongchang.

• 한국초지조사료학회지
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• 제18권2호
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• pp.157-162
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• 1998

This experiment was carried out to investigate the effects of harvesting date and additives on the quality of fall sown oat(Avena sativa L.) silage at the department of animal resources science, college of life resources science, Woosuk University, Wanju &om August, 1997 to March, 1998. The experiment was arranged in a split plot design with three replications. The main plots consisted of the harvesting date such as 15 Oct., 23 Oct. and 2 Nov. and different additives as subplots(control, wheat bran, formic acid, lactic acid bacteria, and wilting). The results otained are summarized as follow : The fiesh and dry matter yield of oat were increased by harvesting date delayed, then fiesh and dry matter yield at 2 Nov. were highest as 36,733 and 7,29Okg/ha, respectively. The dry matter content of oat silage was increased significantly by harvesting date delayed(P< 0.05), and DM content of wheat bran and wilting treatment was high at every harvest date. The DM loss was lower in LAB, formic acid and wheat bran treatment, but on significant difference was found among harvesting date(P< 0.05). Average pH of silage harvested at 23 Oct. was lowest as 4.06, and the quality(CP, NDF, ADF, and IVMDM) of oat silage was decreased by harvesting date delayed. The content of acetic acid was no difference among harvesting date, but butyric acid was decreased and lactic acid was increased at 23 Oct. harvest. The result of this study indicate that oat harvested at booting-heading stage of maturity with wilting wheat bran, and LAB could be recommended as producing high quality of oat silage.

• 한국농림기상학회지
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• 제16권4호
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• pp.267-273
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• 2014

본 연구는 비교적 내건성이 강하여 옥상녹화 소재로 이용될 수 목본식물들 중 수수꽃다리(Syringa dilatata), 사철나무(Euonymus japonica), 쥐똥나무(Ligustrum obtusifolium), 남천(Nandina domestica)등 4 수종에 대해서 내건성을 비교하고 영구위조계수를 알아보기 위하여 수행되었다. 식물의 내건성을 비교하기 위하여 2013년 6월4일~7월 20일까지 무관수 처리하였고 7일 간격으로 잎의 상대함수량, 상대전기전도도, 수분포텐셜 등을 측정하였으며, 영구위조계수를 알아보았다. 실험 결과 충분히 관수한 화분을 옥상으로 옮기고 2일 후에 측정한 잎의 상대함수량은 쥐똥나무 91.3%, 수수꽃다리 92.9%, 남천 91.2%, 사철나무 90.1%였다. 그 후 28일 동안 관수하지 않은 상태에서 측정한 상대함수량은 쥐똥나무 60.2%, 수수꽃다리는 67.8%로 크게 감소되었으나, 남천과 사철나무는 각각 80.1%, 81.7%로 감소되었다. 상대전기전도도와 수분포텐셜에서도 남천과 사철나무가 쥐똥나무와 수수꽃다리에 비하여 내건성이 큰 것으로 나타났다. 수종별 영구위조계수는 쥐똥나무 3.1%, 수수꽃다리 2.1%, 남천 1.6%, 사철나무 0.7%로 나타났다. 즉 위의 공시수종 모두 내건성이 강하지만 그 중에서도 특히 사철나무의 내건성이 가장 크고 다음은 남천> 수수꽃다리> 쥐똥나무 순인 것으로 분석되었다.