벼 등숙기간중 $CO_2$ 동화율, 기공전도도 및 수용성 탄수화물 농도의 내생 리듬

현동윤 한국작물학회 1995 Korean journal of crop science Vol.40 No.5

Persisent circadian rhythms in carbon assimilation, stomatal conductance and soluble carbohydrate concentration were investigated during grain filling period in rice plant transferred from a natural photoperiod to constant conditions. A weak rhythm in photosynthesis, measured as carbon assimilation, and stomatal opening, as conductance to water vapor, with a period of approximately 24-hours, occurred under constant condition. Carbon assimilation and stomatal conductance reached maximum values near noon and minimum values near midnight during the early stage (until 72-hour) after transferring to constant condition, and then the amplitude and phase were changed slowly, the rhythms with little damping, reaching maximum values near midnight and minimum values near noon during 96~120-hours after transferring. However, photosynthesis in plants grown for 14days after anthesis under constant moderate light(day and night) did not oscillated in constant condition unlike plants grown under a cycle of light and darkness. These phenomenon was observed in soluble carbohydrate concentration in flag leaves as well. Evidences from several approaches indicate that endogenous rhythms of $CO_2$ assimilation, stomatal conductance and soluble carbohydrate concentration are closely couped with each other and particularly important to plants, which depend on the natural day-night cycle as a external signal. 등숙기간중 벼의 탄소동화율과 기공전도도 그리고 수용성 탄수화물농도의 내생리듬을 알아보기 위하여 자연상태의 광주기 조건에서 재배된 벼를 일정한 환경조건으로 옮긴 다음 지엽을 대상으로 이들의 반응을 관찰하였다. 자연상태의 광조건에서 성장한 벼의 탄소동화율은 약 24시간을 1주기로 하여 일정한 진폭으로 변화되었으며, 정오에 최고에 달하고 한밤중에 최저에 이르나 72시간이 경화할 때 쯤 변화의 폭은 점차적으로 줄어 들어 120시에는 최고, 최저에 도달하는 시각이 바뀌어 정오에 최저에 달하고 한밤중에 최고에 이르는 현상을 나타내었다. 이와 같은 반응은 기공전도도에서도 찾아볼 수 있어 이들 관계는 매우 밀접함을 보였다. 반면, 개화 후 14일 동안 낮과 밤 모두 일정한 광조건에서 성장한 벼의 탄소동화도율과 기공전도도의 반응은 전자와 같이 주기적인 폭의 변화를 찾아볼 수 없었다. 잎내의 수용성 탄수화물 농도의 변화 또한 탄소동화율과 기공전도도의 변화에서 나타나는 현상과 일치하는 경향을 보였다. 이상에서 탄소동화율과 기공전도도 그리고 수용성 탄수화물의 내생림듬은 작물에 부분적으로 중요한 역할을 하고 있음을 시사하며, 또한 이들은 광주기(photoperiod)에 의존적이기 때문에 광주기가 탄소동화작용 및 수용성 탄수화물 형성에 중요한 조절 요인으로 작용하고 있음을 시사한다.

인삼 재배지의 토양 화학성에 따른 생리장해 유형 분석

현동윤,연병열,이성우,강승원,현근수,김영철,이광원,김성민 韓國藥用作物學會 2009 한국약용작물학회지 Vol.17 No.6

This study was to set the guidelines of soil chemical components in order to assure the safety and quality ofthe panax ginseng from physiological disorder. The disorder symptoms appeared on the leaf with yellow spot, atrophy, yel-low-brown spot, also showed red skin and rough skin of the root. Occurrence type of physiological disorder in cultivatedfield divided into two types:type I ‘such as, yellow spot’ consist of single disorder symptom; type II ‘such as, yellow spotand yellow-brown spot’ consist of two or more different disorder symptoms. The individual contribution of soil properties tothe occurrence type was as follows ; The yellow spot was affected by Na>NO3-N>salinity (EC) in soil. The same results wasobserved in red skin. Atrophy was affected by NO3-N>salinity (EC)>Ca>Mg. Rough skin was affected by P2O5>pH>Organic material > K. It showed positive associated to P2O5, pH and K, but negative associated to organic matter. Simulta-neous occurrence of two different disorder, including cases which yellow spot and yellow-brown spot, those were affected byNO3-N > salinity (EC) > Na > Mg. In the case of atrophy plus yellow-brown spot, those also were affected by in the order :NO3-N > salinity (EC) > Ca > Mg > Na. Red-rough skin was affected in the order : salinity (EC) > NO3-N > K > Na. Soilchemical components appear to be related to occurrence of physiological disorder, particularly in salinity (EC) and NO3-N.The salinity (EC) and NO3-N were negative related to plant growth. In addition, exchangeable cation capacity play criticalroles in attributing to complex occurrence of physiological disorder.

1. 인삼

현동윤,김영창,장인배 한국원예학회 2013 한국원예학회 기타간행물 Vol.2013 No.5

인삼 고온내성 개체 선발을 위한 검정지표 설정

현동윤,김영창,현근수,이성우,박춘근,김태수,차선우 한국작물학회 2006 한국작물학회 학술발표대회 논문집 Vol.2006 No.-

고려인삼의 광합성 특성 - Ⅰ. 광도와 잎온도의 변화에 따른 광합성 반응 ( Photosynthetic Characteristics of Panax ginseng C. A. Meyer - Ⅰ. Photosynthetic Response to Changes of Light Intensity and Leaf Temperature )

현동윤,황종규,최선영,조재성 고려인삼학회 1993 Journal of Ginseng Research Vol.17 No.3

동화상내 공기유입속도의 변화에 따른 벼의 광합성반응

玄東允,崔京求,金鎭淇 韓國作物學會 1994 한국작물학회지 Vol.39 No.6

본 연구는 자연조건에서 생육된 벼를 수정 후 13일에서 15일에 일정한 환경조건으로 옮긴 다음 공기유입속도의 변화(200-280-360-440 ml/min.)에 따른 벼의 광합성 반응을 알아보기 위하여 진행되었다. 공기유입속도의 변화에 따른 경시적인 광합성반응에서, 기공전도율은 처리 후 초기에 급속히 감소한 다음 일정시간동안 동요되다가 약 1시간에서 1시간30분후에 평형상태에 도달되었다. 이와 유사한 변화는 탄소동화율에서도 찾아 볼 수 있었다. 기공전도율은 공기유입속도가 증가함에 따라 감소하였는데, 그 감소율은 탄소동화율에서 나타나는 감소율과 일치되는 경향이었다. 공기의 흐름을 분당 440 ml로 하여 전분이 축적되는 기간동안 처리하였을 경우, 전분덩어리들 간의 결합구조가 느슨하며 전분덩어리를 횡단하였을 경우에는 미세한 구멍이 발생됨을 관찰할 수 있었다. 이상에서 알 수 있는 것은 공기유입속도의 증가에 따른 기공전도율과 탄소동화율은 상호간 관계가 밀접함을 알 수 있으며 공기유입속토의 증가는 광합성과정에서 CO2 흡수 및 광합성의 최종산물인 전분구조에 영향을 미칠 수 있음을 시사한다. This study was conducted to investigate photosynthetic response to four sequential air influx rate with rice(Oryza sativa L.)plants moved from a natural condition to constant condition with automatic regulation selected environmental variables on 13th~15th days after anthesis. In time course of photosynthetic response to increasing air influx rate(200-280-360-440 ml / min.), stomatal conductance decreased rapidly at the beginning after treatment and then oscillated with a free-running period of a approximately 1 hour to 1 hour 30 minutes until reached up to steady-state condition. Similar change was also observed CO2 assimilation rate. Stomatal conductance decreased throughout the air influx rate sequence, but the rate of decrease was similar to the decrease in CO2 assimilation rate observed under continuous air influx rate conditions. In starch granules during grain filling period under air influx rate(440 ml / min.) , compound starch granules were loosing and a number of hollows were observed in surface of single starch granules. Evidences from several approaches indicate that synchronization of stomatal conductance andCO2 assimilation rate was closely inter-related tinder increase of air influx rate and increase of air influx rate influenced theCO2 uptake in photosynthetic processes and compound starch granule, as 'end products' of photosynthesis.

인삼 수량과 토양의 물리적 특성을 이용한 재배적지 기준 설정

현동윤,현근수,연병열,강승원,김영철,이광원,김성민 韓國藥用作物學會 2009 한국약용작물학회지 Vol.17 No.6

The purpose of this study was to identify soil physical characteristics as guideline for high yield potential inginseng cultivated field which produced 6 years root. Harvest yields of ginseng to be divided by parent rock was in order ofphyllite and red shale 3.1㎏/3.3㎡ > granite and gneiss·schist 3.0㎏ > basalt 2.6㎏ > porphyry 2.2㎏ in upland and forestsoil. Also, with classified by topography, it was in order of foot slope and alluvial fan 3.2㎏/3.3㎡ > valley 3.0㎏ > low hill2.9㎏ > hill, lave flow and dilluvial terrace 2.8㎏ in survey tilth. Class determination of soil texture, it was in order of sandyloam 3.1㎏/3.3㎡ > loam and silt loam 3.0㎏ > clay loam 2.9㎏ > silt clay loam 2.8㎏ in survey tilth. Slope condition offarming land, in case of sloping (2~7%), it was 3.1㎏/3.3㎡ but deep sloping (15~30%) caused decreasing harvest yield. Indrainage classes (excessively, well and moderately well), there was no significantly different in harvest yields. Relationshipbetween harvest yield and soil series, Production sites as yielding 3.0㎏/3.3㎡ were seven sites, also it was contained 14 soilseries. Production sites as yielding 2.5~3.0㎏/3.3㎡ were eleven sites, it was contained 16 soil series. Production sites asyielding 2.0~2.5㎏/3.3㎡ were 10 sites, it was contained 4 soil series.

고려인삼에서 광반응 및 호흡에 미치는 잎온도의 영향

현동윤,유남희 韓國作物學會 1996 Korean journal of crop science Vol.41 No.6

고려인삼의 광 반응과 호흡에 미치는 잎 온도의 영향을 알아보기 위하여 단기적(short term)으로 조절된 광도에서 조건별로 온도를 1℃ 간격으로 30℃ 까지, 암 조건에서는 46℃ 까지 증가시켜 그 반응을 살펴보았다. 고려인삼의 Rubisco 활성은 낮은 광도와 잎 온도 조건에서 높은 경향을 보였는데, 광도가 100u mol m2 s1에서는 18℃ 의 잎온도에서 최고의 활성을 보였으며 이는 200u mol m2 s1 광도에서도 같은 경향으로 나타났다. 그러나 300, 400u mol m2 s1에서는 잎 온도 수준이 각각 17℃ 와 16℃ 에서 최고 반응을 보여 광도증가에 따라 적정온도수준이 감소하는 것으로 나타났다. 반면, 암조건 에서는 28℃ 부터 40℃ 까지 호흡량이 급속히 증가하다가 40℃ 이후부터는 급속히 감소함을 보였다. 이상의 결과는 잎온도 조절에 따라 광이용효율을 높일 수 있으며 암조건에서의 CO2 발생량을 줄일 수 있을 것으로 생각된다. This study was conducted to investigate effect of leaf temperature on light response and respiration during short-term exposure to a sequnce of PPFD cycle(100-200-300-400~mu mol m-2 s-1 ) under increasing leaf temperature sequnce up to 30~circC and in dark condition, increasing up to 46~circC with step size (1~circC ) in Panax ginseng C. A. Meyer. When leaflet exposed to low light intensity and temperature, Rubisco activity was higher than remained activity in high condition. Leaves adapted to 100~mu mol m-2 s-1 PPFD had a peak response similar to that of 200~mu mol m-2 s-1 at 18~circC , but in above PPFD cycle(300, 400~mu mol m-2 s-1 ) it represented at 17~circC and 16~circC , re-spectively. CO2 evolution in dark condition increased rapidly when leaf temperature was increased up to 28~circC and then 'dipped' below steady-state level from above 40~circC . Thus, Pananx ginseng is able to take advantage of irradiance increase and decrease of CO2 evolution in dark condition to control leaf temperature.mperature.

인삼에 있어서 IAA(Indol-3-Acetic acid) 처리가 CO₂ 흡수에 미치는 영향

현동윤,최선영,최경구,김진기 한국작물학회 1992 한국작물학회 학술발표대회 논문집 Vol.1992 No.-

적색과 청색ㆍ백색 LED 처리가 수경재배 인삼의 생육 및 진세노사이드 함량에 미치는 영향

현동윤(Dong Yoon Hyun),이성우(Sung Woo Lee),김용범(Yong Bum Kim),강승원(Seung Weon Kang),김금숙(Geum Soog Kim),차선우(Sun Woo Cha) 한국원예학회 2010 한국원예학회 학술발표요지 Vol.2010 No.5