• 한국산림과학회지
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• 제94권6호
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• pp.446-452
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• 2005

노각나무의 천연분포지의 집단간 변이를 알아보기 위하여 조사지의 집단별 엽형질 형태적 특성을 분석한 결과, 엽병장과 거치수를 제의한 엽장, 엽폭, 엽면적, 엽맥수에서 금산 집단이 타 집단보다 비교적 적게 나타나는 경향을 보였다. 각 형질중 엽병장과 엽면적을 제외한 형질의 변이 계수는 11.6~17.4%로 비교적 변이의 폭이 적은 반면, 엽병장과 엽면적은 집단간 변이계수가 각각 34.9%, 28.4%로 그 변이가 심하였으며, 이들 형질의 집단내 변이계수도 엽병장이 29.5~42%, 엽면적은 27.7~40.7%의 범위로 변이폭이 크게 나타났다. 또한, 12개 엽특성간 단순상관 분석결과, 엽폭과 엽면적이 상관관계가 가장 높고(r=0.975) 다음이 엽장${\times}$엽면적, 엽장${\times}$엽폭이 각각 상관계수 0.971과 0.969로 매우 높았으며, 엽저각과 엽형지수간에는 높은 부의상관(r=-0.843)을 나타내어 엽저각이 커질수록 엽형지수는 작아지는 관계를 나타냈다. 양적 질적 측정치의 유이성(similarity)에 대한 척도로서 선발집단의 엽특성을 대상으로 군집분석을 실시한 결과, 거리수준 0.4에서 제 1군은 조계산, 가야산 집단, 제2군은 백운산집단, 제 3군은 운문산, 무등산집단 그리고 제 4군은 금산집단으로 4개의 군으로 구분할 수 있었다. 거리수준 0.6에서 2군으로 구분할 수 있었으며, 제 1군은 금산집단, 제 2군은 무등산, 운문산, 백운산, 가야산, 조계산 집단으로 구분되었다. 특히, 금산 집단은 엽장, 엽족, 엽면적 그리고 엽맥수의 엽형질 특성에 있어서 나머지 5개의 집단과 분명한 차이를 보이고 있었다. 추출된 12개 주성분 중에서 고유값(eigenvalue)이 1.0이상으로 의미를 갖는 주성분은 5가지 나타났으며, 전체분산에 대한 상위 2개 주성분의 설명력은 52.7%로 엽장, 엽폭의 엽형질이 기여도가 가장 높게 나타났으며, 5개 주성분을 모두 포함할 경우의 설명력은 91.3%였다.

• 한국환경복원기술학회지
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• 제6권2호
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• pp.21-26
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• 2003

2000년 9월부터 2002년 6월까지 약 50여 회에 걸쳐 전국적으로 191개체를 수집하였고, 관리 도중 고사한 38개체를 제외한 153개체의 왕포아풀의 형태적 특성의 결과는 다음과 같다. 1) 우리나라에 자생하고 있는 왕포아풀의 초장은 최저 4.5cm의 왜성형으로부터 최고 40.0cm의 고성형 까지 다양한 범위를 나타내고 있으며, 그 중 초장의 범위가 10~20cm사이에 있는 왕포아풀이 가장 많이 조사되었고 초장이 30cm를 넘는 고성형은 그리 많지 않았다. 2) 왕포아풀의 엽장은 최저 3.0cm에서 최고 30.2cm의 범위였으며, 평균 13.1cm였다. 초장과 마찬가지로 엽장의 길이도 20.0cm 이하인 것이 대다수였다. 3) 왕포아풀의 엽폭은 최저 1.0mm 세엽형으로 부터 5.0mm 광엽형까지 다양한 형태로 나타났으며, 2.0~3.5mm의 범위에 속하는 개체가 135개체로 가장 많았다. 4) 시각적 품질과 형태적 특성간의 상관분석에서는 초장, 엽장, 엽폭 등 모든 형태적 특성의 항목과 양의 상관관계가 있는 것으로 분석 되었지만, 상관계수는 낮게 나타났다. 5) 형태적 특성간의 상관분석에서는 초장과 엽장의 상관계수가 0.74로 나타나 매우 높은 상관관계가 보였고 95%의 수준에서 유의성이 나타났다.

• 한국식품영양과학회지
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• 제30권2호
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• pp.215-221
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• 2001

Mustard leaf kimchi added different ratios of pumpkin powder(P) and green tea powder(G) were investigated by measuring changes of physicochemical, microbiological and sensory characteristics during fermentation at 5℃. The pH and total acidity were changed slowly until 20 days, and then changed rapidly for 20∼40 days in all mustard leaf kimchi groups. The pH and acidity of mustard leaf kimchi added 0.5% G was the most slowly changed compared to the other groups. Reducing sugar content was highest in mustard leaf kimchi added 0.5% P at early stage of fermentation, but the reduing sugar content of this mustard leaf kimchi group was decreased more rapidly than those of the other groups during fermentation. The numbers of lactic acid bacteria and total bacteria were highest in 0.5% P added group and lowest in 0.5% G added group. The mustard leaf kimchi added 0.3% P and 0.2% G was relatively high in number of Leuconostoc sp., on the contrary low in Lactobacillus sp. compared to the other groups during fermentation. Changes of Hunter's color values, especially yellowness, and hardness were smaller in each mustard leaf kimchi added 0.5% G, and 0.3% P and 0.2% G than the other groups. Sensory scores of taste, odor and overall acceptability were highest in mustard leaf kimchi added 0.3% P and 0.2% G. Based on these results, it is suggested that mustard leaf kimchi added 0.3% P and 0.2% G was the best group among mustard leaf kimchi groups.

• 한국식품조리과학회지
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• 제26권2호
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• pp.111-120
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• 2010

The aim of this research was to develop a practical use of the citron (Citrus junos Sieb.) leaf, which is a by-product of the citron cultivation, by introducing it into the Jeolpyun, one of the most popular rice cakes in Korea. To achieve the goals of this research, the citron leaf Jeolpyun (CLJ) was first precipitated. The sensory properties and physical examination of products containing 0 (control), 1.0, 1.5, 2.0, and 2.5% of the dried citron leaf powders were then assessed by employing sensory evaluations and instrumental measurements for texture and color. A total of one-hundred and fifty women panelists in age categories of 20s, 30s, 40s, and over 50 were randomly selected from residents in the Seoul area. In general, the highest sensory evaluation scores were obtained for CJLs containing 2% of the citron leaf powders by all panel groups although there was some variation. As levels of the citron leaf powder in the CLJ increased, the texture parameters such as hardness, cohesiveness, and gumminess of the CLJ as measured by the Texture Analyzer significantly increased while adhesiveness decreased and springiness remained constant. Accordingly, the optimal amount of citron leaf powder was determined to be 2% or less for CLJ in order to maintain the original texture of the Jeolpyun. As the levels of the citron leaf powder increased in the CLJ, the Hunter colorimetric L-and a-value significantly decreased while the b-value significantly increased. In other words, the CLJs became darker, as well as deeper in green and yellow tones as the levels of the citron leaf powder increased. The above results indicate that the citron leaf could be successfully used for preparation of Jeolpyun at a concentration around 2%(w/w) based on the consumer preference test and instrument analysis of the products. This research is expected to contribute to the industrial use of citron leaf powder in Jeolpyun and other food products.

• 한국잠사곤충학회지
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• 제16권1호
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• pp.93-100
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• 1974

농약으로 오염된 뽕을 누에에게 급여했을 때 누에의 사육성적과 견질에 미치는 영향을 알아보기 위하여 살충제를 사용하여 실험한 결과 다음과 같은 몇가지 결과를 얻었다. 1. 1,000배액의 살충제를 뽕잎에 살포한 후 25일 자연 방치하였다가 급여하여도 감잠비율이 증가하였다. 2. 농약오염뽕의 누에첨식사육결과 사육성적에 미치는 영향은 살충제별로 차이가 있다. 3. Lebaycid의 첨식구에서는 탈항잠이 출현하였다. 4. 농약오염뽕의 누에첨식사육은 불정형견과 이상견사의 원인이 된다.

• 식물분류학회지
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• 제39권2호
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• pp.74-79
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• 2009

The morphological characteristics of leaves, trichomes, and acorns in 8- to 11-year-old reciprocal hybrids of Quercus dentata and Q. serrata were investigated. The reciprocal hybrids had obovate to obovateelliptic leaves that were smaller than those of Q. dentata but similar to Q. serrata in their leaf size, obtuse leaf apex, narrow-tipped leaf base, and shape of small to intermediate-sized serrations. The ray length of stellate hairs was intermediate between those of the parents, and the hairs showed dense growth. Long single hairs are present among the stellate hairs on the abaxial side of the leaves. Therefore, the hybrids of Q. dentata and Q. serrata could be identified by the size and shape of leaves, shape of serrations, and type of leaf trichomes.

• Mycobiology
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• 제51권6호
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• pp.393-400
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• 2023

During a disease survey in October 2019, leaf spot symptoms with a yellow halo were observed on Korean angelica (Anglica gigas) plants grown in fields in Pyeongchang, Gangwon Province, Korea. Incidence of diseased leaves of the plants in the investigated fields ranged from 10% to 60%. Morphological and cultural characteristics of two single-spore isolates from the leaf lesions indicated that they belonged to the genus Didymella. Molecular phylogenetic analyses using combined sequences of LSU, ITS, TUB2, and RPB2 regions showed distinct clustering of the isolates from other Didymella species. In addition, the morphological and cultural characteristics of the isolates were somewhat different from those of closely related Didymella spp. Therefore, the novelty of the isolates was proved based on the investigations. Pathogenicity of the novel Didymella species isolates was confirmed on leaves of Korean angelica plants via artificial inoculation. This study reveals that Didymella gigantis sp. nov. causes leaf spot in Korean angelica.

• 아시안잔디학회지
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• 제24권2호
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• pp.88-96
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• 2010

한국잔디류중 엽폭이 3~4 mm 정도를 보이는 중지류는 최근에 국내에서 가장 널리 이용되고 있는 잔디이다. 본 연구에서는 한국잔디류 중 중엽형 36 계통과 기본 5종의 근연관계를 확인해 보고자 RAPD 방법을 사용하였다. 형태적 특성조사는 엽폭, 잎각도, 최하위 잎의 잎집 길이, 엽모, 지상포복경의 색 등을 조사하였다. 여덟개의 프라이머를 이용하여 19개의 RAPD 마커를 확인하였다. 마커를 이용하여 유전적 유사도를 조사한 결과 0~0.736의 유전적 변이정도가 확인되었다. RAPD 마커를 이용하여 분류한 결과 3개 군으로 나뉘어 졌다. 제1군에는 들잔디와 함께 미국에서 육성된 'Zenith', 'Meyer'등이 포함되었다. 제2군에는 갯잔디, 왕잔디와 함께 '안양중지', '삼덕중지', '평동중지' 등이 포함되었다. 그리고 제3군은 제1군, 제2군과 비교해 유전적으로 거리가 멀게 나타났으며, 금잔디와 비단잔디가 포함되었다. 한국에서 주로 이용되고 있는 '안양중지', '삼덕중지', 그리고 '평동중지' 류는 갯잔디 및 왕잔디와 유전적 유사도가 높은 것으로 나타났다.

• 한국조경학회지
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• 제32권6호
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• pp.109-116
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• 2005

This study was conducted to examine the growth and physiological characteristics of Asplenium scolopendrium native fern as affected by irrigation times and soil media as an environment modeled on habitate where was sunken-condition. 1. Light intensity was lower in sunken than in non-sunken, but air humidity was higher in sunken about $2040\%$. Soil moisture content was higher with the leaf mold in sunken irrigating 2 times/week. The results of chemical analysis of medium showed that EC, pH, organic matter content, total nitrogen, CEC, Exch-Ca, Exch-Mg and Exch-K were higher with leaf mold than sud: leafmold and field soil: sud: leaf mold. 2. In the case of irrigation 2 times/week Asplenium scolopendrium grew well sunken more than non-sunken. As non-sunken condition similar with, 7 times/week irrigation, plant height, frond width, frond length and stipe length increased. In case of soil media, growth of Asplenium scolopendrium was better with leaf mold than that of sand: leafmold or field soil: sand: leaf mold. 3. In the case of irrigation 2 times/week photosynthetic rate, $CO_2$ absorption rate and water efficiency were higher with non-sunken than that of sunken, expect of stomatal conduction, $CO_2$ use efficiency. The physiological characteristics of Asplenium scolopendrium were highest in non-sunken irrigating 7 times/week In case of soil media, physiological activity was higher with leaf mold than sand: leafmold or field soil: sand: leaf mold.

• Journal of Plant Biology
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• 제17권2호
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• pp.99-105
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• 1974

Author has studied and reported on taxonomy of Korean sedges, using gross morphology, anatomy and epidermal patterns of the leaf blades(1969, 1971, 1973, 1974). This paper is the 6th report of epidermal patterns of leaf blade on sedges and includes 5 genera, Eriophorum, Fuirena, Kobresia, Rhynchospora and Scirpus. The author proposed to find epidermal patterns of leaf blades as an important taxonomic characteristic of sedges classification. The result of this study, the elements of leaf epidermis, subsidal cells, silica body, cell wall of long cell, prickles, and arrangement of the elements are considered to be significant characteristics for the identification and classification of sedge.