• 생물환경조절학회지
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• 제20권3호
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• pp.197-203
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• 2011

고구마 재배농가에서 무병묘를 손쉽게 자가증식할 수 있는 간편한 수경재배 시스템을 도입하기 위하여, 점적호스를 이용한 순환식 자루재배 시스템을 시설하여 배지 혼합비율 및 삽수종류에 따른 무병묘의 생육을 조사하였다. 연황미와 맛나미 모두 15일경까지는 배지 종류에 따른 생육에 유의한 차이를 보이지 않았으나, 20일경부터는 원예용상토(TKS-2)와 펄라이트 함량이 높은 혼합배지(코코피트 : 펄라이트, 3 : 7 v/v)에서 생육이 양호하였다. 품종 간에는 연황미의 생육이 맛나미보다 양호하였으며, 1마디 삽수보다 정단 삽수로 증식하는 것이 효과적이었다. 연황미와 맛나미의 줄기생육은 정단 삽식에서 1마디 삽식보다 10cm 및 2cm 이상 신장하였으며, 코코피트와 펄라이트 3 : 7(v/v) 혼합배지에서의 건물중과 생체중은 원예용 상토 또는 코코피트와 펄라이트 7 : 3(v/v) 혼합배지에서보다 유의한 증가를 보였다. 따라서 코코피트와 펄라이트(3 : 7, v/v) 혼합배지를 이용한 자루재배는 고구마 무병묘 증식에 성공적으로 적용할 수 있었으며, 고구마 종순농가에서도 큰 경제적 부담없이 적용할 수 있을 것으로 기대되었다.

• 식물병연구
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• 제8권4호
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• pp.245-249
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• 2002

검은점뿌리썩음병의 병원균에 감염된 참외의 광합성 및 생육 반응을 측정한 결과, 수확기 참외의 광합성 속도는 이병주가 건전주에 비해 현저하게 낮았고, 기공저항은 이병주에서 큰 것으로 나타났다. 목부일비액은 이병주에서 전혀 분비되지 않았다. 수확기 참외의 잎과 줄기에서 무기양분함량은 이병주와 건전주 간에 차이를 보여주지 않았다. 참외의 생육특성은 이병주가 건전주에 비해 엽면적이나 생체중및 건물중에서 건전주에 비해 낮았으며, 평균 과중도 같은 경향을 보였다.

• 한국수산과학회지
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• 제50권2호
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• pp.175-182
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• 2017

We examined the effects of environmental factors on zoospore release and germling growth of the green tide alga Cladophora albida under various conditions of temperature${\times}$irradiance (zoospore release), temperature${\times}$irradiance${\times}$ nutrient (germling growth), and a single factor test of salinity. Zoospore release was maximized at $30^{\circ}C$ and $100{\mu}mol\;photons\;m^{-2}s^{-1}$ in the temperature irradiance experiment and at 34 psu in the salinity experiment. Maximum germling growth was observed at $25^{\circ}C$ with $100{\mu}mol\;photons\;m^{-2}s^{-1}$ and PES (Provasoli's Enriched Seawater) in the temperature irradiance nutrient experiment, and at 34 psu in the salinity experiment. Germlings grew faster at higher irradiances for a given temperature level, and also grew faster as salinity increased over the range of 5-34 psu. Overall, optimal environmental conditions for zoospore release were $30^{\circ}C$, $100{\mu}mol\;photons\;m^{-2}s^{-1}$ and 34 psu. Maximal germling growth occurred at $25^{\circ}C$, $100{\mu}mol\;photons\;m^{-2}s^{-1}$, PES, and 34 psu. C. albida blooms are most likely to occur under these optimal environmental conditions, as plentiful zoospore release and rapid germling growth lead to population growth.

• 한국수산과학회지
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• 제49권5호
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• pp.657-664
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• 2016

The green macroalga Cladophora vadorum bloomed along the coast at Sangrok Beach, Buan, South Korea, in September 2015. To elucidate the cause of bloom, the effects of environmental factors on the vegetative growth of adult fragments were examined. Growth experiments were carried out under different combinations of temperatures and irradiances, and with a single factor of nutrients (nitrogen, phosphorus). The maximal growth of C. vadorum was reported under the combination of 25°C and 100 μmol photons m⁻²s⁻¹. The species grew under a wide range of N and P concentrations. The growth of C. vadorum peaked at 50 μM PO₄³⁻, 80 μM NH₄⁺, and 100 μM NO₃⁻. Adult fragments formed holdfasts and new branches within 3 days in culture and became adults, showing polarized growth patterns, in 2 weeks. This is the first report showing the development of numerous bladelets from a segment in Cladophora species. The present results indicate that Cladophora blooms appear under growth conditions that are favorable in terms of temperatures, irradiance, and nutrients via fragment growth patterns producing rapid holdfasts and many bladelets.

• 한국자원식물학회지
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• 제8권2호
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• pp.209-215
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• 1995

중부(中部) 내륙지방(內陸地方)에서 백하수오(白何首烏) 재배시(栽培時) 적정(適正) 재식밀도(栽植密度)를 구명(究明)하고자 충북(忠北) 지방(地方) 재래종(在來種)을 공시(供試)하여 10a당(當) 시비(施肥)는 웅비(施肥) 1,000kg, N-P-K=8-4-4kg을 전량(全量) 기비(基肥)로 시용(施用)하였다. 처리(處理)는 휴폭(畦幅)을 주구(주구)로, 주간(株間)을 세구(細區)로 하여, 휴폭(畦幅)은 40, 50, 60cm, 주간(株間)은 10, 15, 20cm로 하여 분류구배치(分劉區配置) 3반복(反復)으로 시험(試驗)을 수행(遂行)하였던 결과(結果)를 요약(要約)하면 다음과 같다. 1. 출현기(出現期)는 5월(月) 25일(日)로 처리간(處理間)에 차이가 없이 균일(均一)하였다. 2. 위장(萎長)은 휴폭간(畦幅間)에서 40cm는 219cm, 50cm는 220cm, 60cm는 225cm 였으나, 주간(株間)에는 10cm에서 225cm, 15cm는 219cm, 20cm는 218cm로 주간(株間)이 좁을수록 길었으며, 엽수(葉數)는 양장(養長)과 같은 경향(傾向)으로, 주간(株間)이 좁으면 엽수(葉數)는 증가(增加)되었다. 3. 근장(根長)은 휴폭(畦幅) 40cm에서 24.5cm, 50cm는 24.6cm, 60cm는 24.2cm로 큰 차이가 없으나, 주간(株間) 10cm에서 23.5cm, 24.4cm, 20cm는 24.9cm로, 주간(株間)이 넓을수록 $0.9\sim1.4cm$가 길었으며, 근수(根數)는 $1.2\siml.4$ 개(個)로 처리간(處理間)에 큰 차이가 없는 경향(傾向)이었다. 4, 10a당(當) 수양(收量)은 휴폭(畦幅) 40cm의 395kg/10a에 비(比)하여 50cm는 11%, 60cm는 4%가 각각(各各) 증수(增收)되었으나, 주간(株間) 10cm의 495kg/10a에 비(比)하여, 15cm는 17%, 20cm는 32%가 각각(各各) 감수(減收)되어, 중부(中部) 내륙지방(內陸地方)에서 백하수오(白何首烏) 재배시(栽培時) 재식밀도(栽植密度)는 휴폭(畦幅) 50cm, 주간(株間) l0cm로 재배(栽培)하는 것이 효과적(效果的)이었다.

• 한국작물학회:학술대회논문집
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• 한국작물학회 2017년도 9th Asian Crop Science Association conference
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• pp.251-251
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• 2017

This study was performed to select the soil covering materials for winter safety of Cynanchum wilfordii Hemsley and to investigate the effect on the growth after overwinter. Soil covering materials such as vinyl, rice straw, lagging cover, vinyl+lagging cover, and non-covering were investigated how effect on overwintering rate, growth and yield of Cynanchum wilfordii Hemsley. In changes of soil temperature according to the soil covering materials, non-covering treatment was recorded the highest to $26.7^{\circ}C$, and lagging cover and rice straw showed little change of soil temperature with 9.2 and $9.3^{\circ}C$, respectively. Regrowth rates of early growth after overwinter were lowered in the order as rice straw > vinly+lagging cover > lagging cover > vinyl > non-covering. From the above-ground growth by soil covering materials, vine length showed similar growth in all treatments except vinyl covering and stem diameter exhibited the thicker pattern in vinyl and lagging cover, and there was no significant difference among treatments in number of branch. Flowering period is recorded July 30 in all treatments and ripening period is October 16. Yield of seed production is showed the best in vinyl+lagging cover with $25g/m^2$. Root weight and root length for subterranean growth showed no significant differences among all treatments. Yield is produced the highest in vinyl+lagging cover with 433kg/10a and the next to lagging cover with 431kg/10a. In comparison with incomes, lagging cover earned to 9,882 thousand won/10a, showed the effect on income enlargement to 21%, compare to that of the non-covering.

• 한국약용작물학회:학술대회논문집
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• 한국약용작물학회 2011년도 춘계학술발표회
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• pp.136-137
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• 2011

• 한국식물병리학회:학술대회논문집
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• 한국식물병리학회 2004년도 The 2004 KSPP Annual Meeting & International Symposium
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• pp.36-38
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• 2004

Ethaboxam is a new fungicidal active ingredient that inhibits growth of plant pathogens specifically belonging to Oomycetes with protective, curative, systemic and translaminar activity in plants. Modes of action studies revealed that ethaboxam simultaneously inhibits cytoskeleton formation and mitochondrial respiration of Phytophthora infestans at low concentrations. There have been no indications of resistance development when tested for baseline resistance monitoring to 261 isolates of P. infestans in Korea and Europe and 150 populations of Plasmopara viticola populations in Europe for 3 years since 2000. In a selective study with vine trees artificially inoculated with P. viticola repeatedly for 10 generations in greenhouse, there have been no changes in sensitivity to ethaboxam among four natural populations of P. viticola. Furthermore, ethamoxam has not shown any cross resistance with azoxystrobin, mefenoxam, dimethomorph and cymoxanil. Based on the study results from modes of action and resistance development, ethaboxam appears to be unlikely to develop resistance in field applications.

• 식물병연구
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• 제11권2호
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• pp.198-200
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• 2005

최근 수년간 김천지역 대부분의 포도 과수원에 심하게 발생되었던 일명 '흰송이' 증상을 나타내는 흰가루의 주 미생물은 포도 표면에 존재하면서 포도주 발효시 중요한 문제를 일으키는 효모균 Hanseniaspora (Kloeckera) sp.으로 동정되었으며, 이러한 증상의 발생은 과도하게 사용된 당분과 관련이 있을 것으로 생각된다.

• 한국약용작물학회지
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• 제27권2호
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• pp.75-85
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• 2019

Background: Medicinal plants are widely used in Asia. They have proven to be an invaluable asset in modern drug discovery and their demand has been steadily increasing across various industries. Methods and Results: Using 4,867 valid patents related to 12 oriental medicinal plants of 10 country groups, the growth and development potential of patents was evaluated. The cites per patent (CPP) and patent family size (PFS) indices were used to evaluate the market capability and technological level of the collected patents. Meanwhile, the patent impact index (PII) and technology strength (TS) were used to compare the technological competitiveness of patents among various technology types and markets. Both CPP and PFS indices showed that magnolia-vine and balloon flower have numerous core or original patents. Furthermore, an increase in both PII and TS indices was observed. A newly designed intellectual property multi-layer (IPM) model predicted that the medicine, genome and cosmetic categories have a high possibility of patent application growth. Conclusions: The IPM model can be used to provide the scope of particular technology fields for patent development. In addition, this study can assist patents to advance in the international market and guide the development of a national industrial strategy.