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참나무류 인공교잡묘목 (人工交雜苗木) 모용 (毛茸)의 형태적 특성 (3)
이정호(Jeong Ho Lee),권기원(Ki Won Kwon),유재은(Jae Eun Yu) 한국산림과학회 2001 한국산림과학회지 Vol.90 No.1
From two to five-year-old hybrids of Q. serrate × Q. dentate; Q. dentata × Q. serrata, Q. dentate × Q. mongolica var. crispula, and Q. dentata × Q. aliena, intermediate-size of stellate hairs or both types of their parents have been observed. Especially the hybrids between Q. serrate and Q. aliena and Q. aliena and Q. serrate had both types of their parents. The trichomes of the hybrids between Q. fabri and Q. serrate was the characteristics of Q. serrate. It was possible to identify two to five-year-old of interspecific hybrids based on trichome characteristics.
이정호(Jeong Ho Lee),권기원(Ki Won Kwon) 한국산림과학회 2000 한국산림과학회지 Vol.89 No.1
Leaves of various, 3 to 5-year-old Quercus hybrids were intermediate in size between their parental species. The petiole length was the smallest in the hybrids of Q. dentata x Q. crispula F₁, and was intermediate in the hybrids of Q. aliena x Q. serrata F₁ and Q. dentata x Q. aliena F₁, between their parents. The number of serration in hybrids was close to their mother tree`s in most of crossing combinations. The serration depth and the ratio between longitudinal and transverse length of leaves were intermediate between the values of their parental species.
Soo Won Lee,정진철,배종향,Jeong Ho Choi,Se Kuel Yoo,권기원 (사) 한국생물환경조절학회 2008 시설원예‧식물공장 Vol.17 No.2
The content of chlorophyll a, b have generally increased for Fraxinus rhynchophylla and Fraxinus mandshuricain the order of month of June < August and < September according to artificial water treatment. As similar tendency to F. rhynchophylla, the chlorophyll a content of F. mandshurica grown from different treatments of A, B, C and D also demonstrated increment from 0.89 to 1.67 mg/g and the chlorophyll b showed increment from 0.18 to 0.44 mg/g in the order of June < August < September period. Both F. rhynchophylla and F. mandshurica showed increment in amount of chlorophyll a and b with the lapse of growing period and the increment amount was higher between August and September than that of between June and August. The photosynthetic characteristics that respond to moisture process demonstrated decrease tendency as the moisture condition of the soil is low and as the stress lasted longer. The results showed even more irregular patterns in September. F. rhynchophylla that showed higher photosynthetic rate even in September that has past growth time due to the A treatment which has relatively fair soil moisture condition, the B, C and D treatments distracted by stress due to insufficient moisture in the soil are showing relatively lower photosynthetic rate during a comparison of photosynthetic rate by growth stage. As similar tendency to F. rhynchophylla, F. mandshurica also demonstrated higher photosynthetic rate according to the treatments in the order of A > B > C and > D. Therefore we suppose the photosynthesis rate will increase if the moisture level is high and in regardless of the growth stage 인위적인 토양내 수분처리 결과 물푸레나무와 들메나무 모두 6월 < 8월 < 9월로 갈수록 엽록소 함량이 증가하였다. 생육기간이 지나는 동안 엽록소 a는 0.89mg/g에서 1.67mg/g로, 엽록소 b는 0.18mg/g에서 0.44mg/g을 나타냈으며, 두 수종 모두 6월보다 8월과 9월에 높은 함량 증가를 보였다. 두 수종의 광합성율을 보면, 물푸레나무는 각 토양수분 처리구마다 광합성율의 차이를 보였으며, 충분한 토양수분처리구(90 ~ 78%)의 묘목이 상대적으로 낮은 토양수분조건에서 자란 묘목보다 높은 경향을 나타냈다. 들메나무 역시 물푸레나무와 비슷한 경향을 보였으며, 토양수분이 높을수록 광합성률이 높게 나타났고, 감소할수록 광합성률이 감소하였다. 광합성율의 생육시기별 변화는 두 수종 모두 9월 > 8월 > 6월 순으로, 9월에 상대적으로 높은 광합성률을 나타냈다. 이로 미루어보면 두 수종은 생장시기에 상관없이 수분함량이 높은 처리구에서 광합성이 활발히 이루어지는 것으로 생각된다.
우수영 ( U Su Yeong ),권기원 ( Kwon Gi Won ),이재천 ( Lee Jae Cheon ),김판기 ( Kim Pan Gi ),최정호 ( Choe Jeong Ho ),강병식 ( Kang Byeong Sig ) 한국산림과학회 2003 한국산림과학회지 Vol.92 No.5
The purpose of this study was to select resistant species against SO₂ pollution. We identified the recovery patterns of photosynthesis after SO₂ exposure in Quercus accutissima, Pinus densiflora, Populus alba x P. glandulosa and Acanthopanax sessiliflorus. Plants were exposed to SO₂ (mean concentration 500 ppm) for about 6 h/day (10:00~16:00) for 20 days. Quercus accutissima and Pinus densiflora maintained high photosynthesis and did not show visible damage symptoms after exposure. In contrast, Populus alba x P. glandulosa and Acanthopanax sessiliflors had significant reduction in photosynthesis following So₂ exposure and showed visble necrosis.
SO2에 노출된 4개 수종의 엽내 광색소 함량 및 SOD 활성 변화
이재천 ( Jae Cheon Lee ),한심희 ( Sim Hee Han ),권기원 ( Ki Won Kwon ),우수영 ( Su Young Woo ),최정호 ( Jeong Ho Choi ) 한국농림기상학회 2003 한국농림기상학회지 Vol.5 No.1
목본 식물을 대상으로 SO_2에 의해 나타나는 생리적인 반응을 구명하기 위하여 소나무, 오갈피나무, 현사시, 상수리나무를 대상으로 SO_2를 500 ppb, 800 ppb로 하루에 8시간씩 7일간 처리하여 잎의 광색소 함량과 SOD 활성을 비교 분석한 결과는 다음과 같았다. SO_2의 처리 농도가 증가할수록 4개 수목의 엽 내 엽록소 함량은 감소하였으며, 엽록소 a와 엽록소 b, 카로티노이드 함량의 변화는 수종별, 처리별로 다른 경향을 보였다. 오갈피나무와 상수리나무의 엽록소 b와 a의 비는 SO_2는 500 ppb 처리구에서는 증가하다가 800 ppb 처리구에서는 감소하였다. 즉 500 ppb에서는 엽록소 a가 파괴되며, 800 ppb에서는 엽록소 b도 파괴될 수 있음을 보여 주었으며, SO_2에 대한 민감성은 엽록소 a가 엽록소 b보다 높은 것으로 나타났다. 4개 수종의 잎 SOD 활성은 수종별, 처리별 큰 차이를 나타냈다. 오갈피나무와 상수리나무는 500 ppb처리구에서는 SOD 활성이 증가하다가 더 높은 농도에서는 활성이 감소하였으며, 소나무와 현사시의 경우는 500 ppb 처리와 800 ppb 처리에서 높은 SOD 활성을 유지하여 내성을 보인다. 그러나 광색소와 SOD 활성을 기준으로 판단해 볼 때, SO_2에 대한 저항성은 현사시가 가장 높은 것으로 판단된다. This study was conducted to compare physiological responses of Pinus densiflora, Populus×tomentiglandulosa, Quercus acutissima and Eleutherococcus sessiliflorus exposed to SO_2 by measuring photosynthetic pigment contents and SOD activity. Four woody plants were exposed to relatively high SO_2 concentration (500 ppb, 800 ppb) for 8h day^-1 for 7 days in a chamber. Photosynthetic pigment contents in the leaves of four species decreased with increase of SO_2 concentration; also chlorpophyll a, chlorophyll b and total carotenoid content were significantly different among tree species and treatments. The ratio of chlorophyll b to chlorophyll a of E. sessiliflorus and Q. acutissima increased for 500 ppb treatment, but decreased at 800 ppb. This result showed that chlorophyll a was destroyed by 500 ppb SO_2 and chlorophyll b by 800 ppb SO_2. Therefore, the sensitivity of chlorophyll a to SO_2 may be higher than that of chlorophyll b. SOD activity differed significantly between species and treatments. SOD activity of E. sessiliflorus and Q. acutissima increased at 500 ppb but decreased at 800 ppb, but P. densiflora and P.×tomentiglandulosa maintained high SOD activity at both 500 ppb and 800 ppb. Based on the photosynthetic pigment contents and SOD activity in the leaves of four tree species, the tolerance of P.×tomentiglandulosa to SO_2 was the highest of four tree species.
유재은 ( Yu Jae Eun ),이정호 ( Lee Jeong Ho ),권기원 ( Kwon Gi Won ) 한국농림기상학회 2003 한국농림기상학회지 Vol.5 No.4
N/A This study evaluated forest vegetation structure according to elevation in Mt. Sokri and Odae. The dominance of Pinus densiflora, Quercus variabilis, Quercus serrata, Prunus serrulata var. spontanea was apparent at elevations below 500 m. Quercus mongolica, Fraxinus sieboldiana, Acer pseudosieboldianum and Symplocos chinensis for. pilosa were conspicuous above 800 m. Significant P. densiflora, Rhus trichocarpa, Lindera obtusiloba and P. serrulata var. spontanea populations appeared below 700 m elevation in Mt. Odae. Q. mongolica, F. sieboldiana, A. pseudo-sieboldianum, Tilia amuresis, Abies holophylla, Carpinus cordata, Betula costata, Kalopanax pintus and Pinus koraiensis were conspicuous at elevations 1000 m and above. P. densiflora, Q. monoglica, Q. serrata, R trichocarpa and L obtusiloba populations were significant at elevations below 700 m. Q. mongolica, F. sieboldiana, A. pseudo-sieboldianum, T. amurensis, A. holophylla, C. cordata appeared at elevations above 1000 m.
오존 스트레스에 대한 몇 수종의 생장, 광합성, Ascorbate peroxidase 활성반응
우수영 ( Su Young Woo ),이성한 ( Sung Han Lee ),권기원 ( Ki Won Kwon ),이재천 ( Jae Cheon Lee ),최정호 ( Jeong Ho Choi ) 한국산림과학회 2004 한국산림과학회지 Vol.93 No.5
The purpose of this study was to identify the effects of ozone pollution on the 3 tree species in controlled environment. Ailanthus altissima, Liriodendron tulipifera, and Platanus occidentalis seedlings were examined in both control and ozone chambers to investigate growth, photosynthesis, and antioxidant enzymes such as Ascorbate peroxidase(APX). Ozone was fumigated 8 hours/day for 34 days with 150 ppb concentration. Photosynthesis of Platanus occidentalis was higher than those of Ailanthus altissima and Liriodendron tulipifera. APX activities of 3 tree species exposed in ozone chamber were higher than those of control in every measurement. It is a typical compensatory strategy of trees of stressed environment.
이정호,교힐준인 (橋詰□人),산본복수 (山本福樹),권기원 ( Jeong Ho Lee,Hayato Hashizume,Fukuju Yamamoto,Ki Won Kwon ) 한국산림과학회 1998 한국산림과학회지 Vol.87 No.2
The difference in leaf bud flushing times of Quercus species and their hybrids was compared among the trees from natural forest, seedlings from natural pollination and artificial crossing. In the natural forest of the Hiruzen experimental forest of Tottori University, Japan, Quercus species flushed in the order of Q. crispula $gt; Q. anguste-lepidota $gt; Q. takatorensis ≒ Q. serrate $gt; Q. dentate. The flushing time of seedlings from natural pollination was in the order of Q. aliena ≒ Q. crispula $gt; Q. angustelepidota $gt; Q. takatorensis ≒ Q. serrate $gt; Q. dentate. The flushing times of F₁ hybrids by artificial crossing were between those of parental species. From the result of interspecific hybridization, it is shown that the earliness of flushing in Quercus species is a genetic character considered hereditable to progenies.