• 제목/요약/키워드: leaf shape

검색결과 517건 처리시간 0.025초

외부형태학적 형질에 의한 한국산 며느리밥풀속(Melampyrum L.)의 분류학적 재검토 (A Taxonomic Review of Melampyrum L. in Korea by the External Morphological Characters)

  • 이재현;정선;나채선;정규영
    • 한국자원식물학회지
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    • 제36권2호
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    • pp.122-132
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    • 2023
  • 한국산 며느리밥풀속(Melampyrum L.) 6분류군(M. roseum, M. roseum var. japonicum, M. roseum var. ovalifolium, M. setaceum, M. setaceum var. nakaianum, and M. koreanum)을 대상으로 외부형태학적 형질을 관찰하였다. 조사 결과, 잎의 형태, 포의 형태, 포 가장자리 강모의 분포 위치와 수는 유용한 검색형질로 확인되었으며, 줄기의 횡단면 형태와 털의 분포, 포의 기부 형태, 꽃받침 열편과 정단부 돌기의 형태, 화관의 색과 길이는 유용한 검색형질로 나타났다. 이러한 외부형태학적 형질을 바탕으로 한국산 며느리밥풀속의 검색표를 제시하였다.

지리산(智異山) 주요(主要) 활엽수종(闊葉樹種)의 엽면적(葉面積) 추정식(推定式)에 대(對)한 연구(硏究) (A Study on the Equations of Estimating the Leaf Area of Broad-Leaf Species in Mt. Jiri)

  • 김시경;이경학
    • 한국산림과학회지
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    • 제70권1호
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    • pp.103-108
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    • 1985
  • 지리산(智異山) 국립공원내(國立公園內)의 천연혼효림(天然混淆林)을 구성(構成)하고 있는 주요(主要) 13개(個) 활엽수종(闊葉樹種)을 대상(對象)으로, 잎의 기하학적(幾何學的) 형태(形態)에 따른 엽면적(葉面積)(A), 엽장(葉長)(L), 엽폭(葉幅)(W)간(間)의 통계적(統計的) 상호관계(相互關係)를 규명(糾明)함으로써 신뢰(信賴)할 수 있는 엽면적(葉面積) 추정식(推定式)을 찾고자 하였다. 정확(正確)한 추정(推定)이 특별(特別)히 요구(要求)되지 않을 때는 A=bLW을 이용하는 것이 일반적(一般的)이다. 이 식(式)에서 계수(係數)b의 값은 수종(樹種)에 따라 고유(固有)한 값을 나타내었으나 전체적(全體的)으로는 0.579~0.717의 범위내(範圍內)에 분포(分布)하였다. 그러므로 지리산(智異山) 천연림(天然林)의 경우(境遇) 임분(林分) 전체(全體)의 직략적(職略的)인 엽면적(葉面積) 추정시(推定時)에는 A=2/3LW의 추정식(推定式)을 사용(使用)하여도 무방(無防)할 것으로 사료(思料)된다. 좀 더 정확(正確)한 추정(推定)을 요(要)할 시(時)에는 회귀방정식(回歸方程式)을 이용(利用)한다. 본(本) 연구(硏究)에서는 9가지 형태(形態)의 식(式)에 적용(適用)하여 결정계수(決定係數)($R^2$)를 기준(基準)으로 엽면적(葉面積) 추정식(推定式)에 가장 적합(適合)한 식(式)의 형태(形態)를 찾아 보았다. 그 결과 단엽(單葉)을 가진 활엽수(闊葉樹)에서는 이제까지 많이 사용(使用)하지 않았던 ${\log}A=b_0+{\log}LW$가 8가지 수종(樹種)에서 가장 적합(適合)한 형태(形態)로 나타났다. 이 식(式)의 계산은 조금 복잡(複雜)하나 컴퓨터를 이용(利用)하면 정확(正確)하고 실용적(實用的)인 추정식(推定式)이 될 수 있다. 그 밖에 $A=b_0+b_1LW$$A=b_0+b_1L^2+b_2W^2$도 좋은 형태(形態)로 나타났다. 이 두 가지를 비교(比較)해 볼 때 결정계수(決定係數)는 비슷하나 F값은 전자(前者)가 월등히 큰 값을 보임으로써 이를 사용(使用)하는 것이 더 간편(簡便)하며 신뢰도(信賴度)가 높을 것으로 사료(思料)된다.

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Development of a New Hibiscus Cultivar 'Daewangchun' with Vigorous Growth and Unique Red Eye through Interspecific Hybridization

  • Ha, Yoo-Mi;Lim, Ki-Byung;Shim, Kyung-Ku
    • 원예과학기술지
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    • 제33권3호
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    • pp.453-458
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    • 2015
  • A new Hibiscus cultivar 'Daewangchun', having vigorous growth, uniform plant habit, upright, compact branches, and a long red eye was developed through interspecific crosses between H. syriacus 'Samchully' (♀) and H. sinosyriacus 'Seobong' (♂). The Hibiscus breeding program was initiated in 2005 and Hibiscus ${\times}$ 'Daewangchun' was preliminarily selected as '05-R-204' in 2 008 due to its vigorous growth and stable flower quality w ith rich pink flowers. The s elected line was further evaluated for different growth characteristics, leaf shape, leaf size, and flowering characteristics, as well as tested for distinctness, homogeneity, and stability during 2010-2012. The new cultivar 'Daewangchun' had violet pink flowers (RHS N80C) with a long red eye spot, medium size and fan petals. The size of flower was 12.0 cm and size of the red eye was 3.0 cm. Leaves were 8.7 cm long and 4.7 cm wide. After plant characteristic evaluation for 3 years (2010-2012), 05-R-204 was registered as cultivar 'Daewangchun' (4731, No. of plant variety protection rights) in 2013. This newly developed cultivar 'Daewangchun' has tall vigorous growth and unique flowers with a long red eye and can be used as specimen plants in landscaping.

한국(韓國) 자생(自生) 새우난초의 화형(花形) 및 화색(花色)의 특징(特徵) (Characteristics of Flower Form and Color in Korean Native Calanthe Species)

  • 정재동;김창길
    • Current Research on Agriculture and Life Sciences
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    • 제15권
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    • pp.17-24
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    • 1997
  • 새우난초, 금새우난초 그리고 그외 변이(變異)종들의 잎, 꽃잎, 악편, 설판(舌瓣)의 특징들과 화색(花色)의 차이등을 요약하면 다음과 같다. 엽수(葉數)는 2~4장(杖), 엽장(葉長)은 12cm~18cm, 엽폭(葉幅)은 5cm~8cm였다. 꽃잎의 길이는 12.8mm~27.0mm, 넓이는 4.8mm~11.2mm였고 색깔은 자색계통(紫色系統), 황색계통(黃色系統), 홍색계통(紅色系統)으로 나타났다. 악편의 길이는 13.6~28.5mm, 넓이는 6.9mm~11.8mm, 색깔은 자색계통(紫色系統), 황색계통(黃色系統), 홍색계통(紅色系統)으로 나타났다. 설판(舌瓣)의 길이(a)는 5.8mm~12.4mm(b)는 11.8mm~20.5mm, 색깔은 백색계통(白色系統)이 가장 많았다. 새우난초를 화색의 차이에 따라 24계통(系統)으로 분류하였더니 2~11번은 새우란(1)에 가까운 자색계통(紫色系統)이었고 13~15번은 금새우란(2)에 가까운 황색계통(黃色系統)이었으며 16~24번은 새우란과 금새우란의 혼합색인 홍색계통(紅色系統)으로 추정되었다.

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부여군 고란초의 생육지 환경조건과 분포 (Distribution and Habitat Condition of Crypsinus hastatus in Buyeogun)

  • 송홍선;김성민
    • 한국약용작물학회지
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    • 제24권1호
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    • pp.27-30
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    • 2016
  • Background : This text was conducted to evaluate the distribution, shape characteristics and habitat condition of Crypsinus hastatus in Buyeo Korea. Methods and Results : In Buyeo, Crypsinus hastatus was distributed at an altitude of 31.2 m, a slope of 82.5% and a distance from river water of 27.2 m. The leaf blade was oblong, 2.7 cm long, 1.2 cm wide with a petiole length of 2.3 cm. The total population comprised 2,100 individuals, with the highest proportion being individuals with a leaf blade of length 0.5 - 1 cm. The temperature and light intensity of the growth point were lower, but the humidity higher, than that of growth around. The chemical properties of the soil were as follows: pH 4.42, organic matter 77.99 g/kg, electrical conductivity 0.50 dS/m, nitrate nitrogen 20.50 mg/kg and available phosphate 165.7 mg/kg. Exchangeable cation content of potassium, magnesium, sodium and calcium was 0.35, 0.70, 0.09 and $2.04cmol^+/kg$, respectively. Conclusions : In Buyeo, Crypsinus hastatus was distributed in $5.3m^2$ area of Nakhwaam, Naeseongri and Jeongamri. However, the population of the medicinal resources seemed to decrease owing to the poor environmental conditions of the habitat.

제주도의 주요 감귤바이러스 감염상황 (Incidence of three Major Citrus Viruses in Cheju Island)

  • 김대현;오덕철;현재욱;권혁모;김동환;이성찬
    • 식물병과 농업
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    • 제5권1호
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    • pp.34-40
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    • 1999
  • The virus infection rates and disease symptoms of three major citrus viruses, citrus tristeza virus (CTV), satsuma dwarf virus (SDV), and citrus tatter leaf virus (CTLV), were investigated at 35 citrus orchards in Cheju Island from 1995. The infection rates of CTV, SDV, and CTLV were 69.8%, 8.6%, and 9.3%, respectively. However, depending on cultivars there were significant differences in the infection rates. The infection rates of CTV were highest in early satsuma mandarin (Citrusunshiu) with 80.9% and lowest in very early satsuma mandarin with 51.9%. In SDV, the highest was in very early stasuma mandarin with 23.1% and the lowest was in early satsuma mandarin with 6.3%. And the highest infection rate in very early satsuma mandarin with 17.9% and the lowest in tangors with 7.3% in CTLV. The symptoms of virus-infected citrus were very diverse; small and abnormal shape of fruits, abnormal leaves such as narrow boat and small spoon shapes of leaves, stem-pitting on the twig, bud-union crease and swelling of the graft part, reduction of the plant vigor and poor yields.

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황색종 연초 품종의 Gamma선에 의한 돌연변이 유수 및 변이형질의 유전분석 I. 돌연변이 유기 및 변이체의 특징 (Induced Mutant by Gamma Rays and Genetic Analysis for Mutant Characters in Flue-cured Tobacco Variety (Nicotiana tabacum L.) I. Induced Mutations and Characteristics of Mutant)

  • 정석훈;이승철;김홍배
    • 한국연초학회지
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    • 제14권1호
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    • pp.12-23
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    • 1992
  • This experiment was conducted to determine the optimum dosage of gamma rays for inducing artificial mutation of several mutant characters in the flue-cured tobacco. 1) In Hicks and BY 104, the gammarays irradiation has no significantly different effect on seed germination from the control. However, the average dosage for 50% growth inhibition was 25-30kr for all the varieties tested, which inhibition 46-52% and 43-57% of the seedling growths for Hicks and BY 104, respectively. 2) A mutant line 83H-5 was selected from Hicks by irradiation gamma ray at the level of 30kr. It has white flower, more resistance to bacterial wilt, Pssudomonas solanacearum, lower plant and stalk height, narrower leaf width, larger leaf shape index(lento width) and later days to flower when compared with the original variety Hicks. 3) White flower was recessive to pink flower in F, and Br (F1 X Hicks) progenies. F2 population of the cross gave segregation ratio of 3 pink flower:1 white flower, and B, (F1 X 83H-5) Population gave 1:1 ratio. Results showed that the white flower character is governed by a single recessive gene.

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Baroque직물에 나타난 floral 패턴의 조형성 (A Study on the Figuration of Floral Pattern of Baroque Textiles)

  • 이선화;권영숙
    • 복식
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    • 제52권7호
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    • pp.1-11
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    • 2002
  • The shape of floral Pattern in the Period of Baroque could be divided single. bunch and vine. The style of representation was stylized, abstract and realistic. the most of style was stylized. The type of composition was fullness, independent and scattered. Floral patterns were shaped simple and complex and components of design could be classified into flower and leaf. flower and fruit. flower and band. bunch of flower, flower and geometry. flower and pot, flower and animal. flower and crest. Kinds of flower were tulip. common marigold, lily, carnation, small bel]flower. lotus, acandus leaf, pomegranate, strawberry. pine cone and abstract anonymous flower which were unfolded by repeat. Characters of floral Pattern were classical elegance, taste of royalty and lively and damask, velvet, brocade which made with gold and silver so, those were a very brilliant and gorgeous. Characters of design were illustrated plane style and stylization where developed arranged on front by repeat or repeat symmetric of vertical. Art, costumes and textiles in this era were a very rich and colorful. The result of study on Baroque's floral pattern will be used to develope a various textile design and chance to be adopted classical pattern into aesthetic value in our time.

Acidovorax avenae subsp. avenae에 의한 세균성줄무늬병의 연구동향 (Current Status of Bacterial Brown Stripe of Rice Caused by Acidovorax avenae subsp. avenae)

  • 송완엽
    • 식물병과 농업
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    • 제5권2호
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    • pp.69-76
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    • 1999
  • Acidovorax avenae subsp. avenae is the causal pathogen of several hosts including oats corn foxtail millet wheatgrass sugarcane and rice. The pathogen is a seedborne pathogen of rice and known to occur widely in rice growing countries. The pathogen cause inhibition of germination brown stripe on the leaf curling of the leaf sheath and abnormal elongation of the mesocotyl of irce. Bacterial colonies grow slowly and are convex circular and creamy with tan to brown center. The causal baterium is Gram-negative and rod shape with a single polar flagellum Nonfluorescence poly-$\beta$-hydroxybutyrate accumulation and precipitate formation around the colony on the medium are useful in the differentiation of this bacterium from other subspecies of A. avenae as well as nonfluorescent bacteria pathogenic to rice. This bacterium has belonged to the genus of Psdeudomonas but recently was transferred to the new genus Acidovorax on the basis of bacteriological and molecular biological data. However the difference of biochemical characteristics protein profile of the cell and host range among strains should be more clarified. To develop an effective control strategy for this disease understanding of detailed life cycle of the disease ritical environmental factors affecting disease development on each host and relationship to grain discoloration of rice are prerequisite. Although the affected area has been world-widely reported there is on recent progress on the understanding of the bacteriological and ecological characteristics of the causal bacterium and control means of the disease.

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"제민요술"에 수록된 식품조리가공법 연구보고(6) -병.종.열.자명.예.로- (A study on the cooking and processing methods presented in CHE MIN YO SUL)

  • 윤서석;윤숙경;조후종;이효지;안명수;안숙자;서혜경;윤덕인;임희수
    • 한국식품조리과학회지
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    • 제7권1호
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    • pp.81-85
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    • 1991
  • This study was carried out to understand and analyze the cooking and processing methods presented in CHE MIN YO SUL (chapter 82~86). The result from the study are as follows; 1. Byung was made from dough of wheat flour, glutinous rice flour, small green peas flour an rice of millet etc. by steaming, roasting, deep fat frying or sauted, or it had eaten Byung which was made from egg or seagull's egg without cereal was simillar to Korea's fried egg cake. 2. Jong and Youl were steamed product made from mixture of millet and rice which were wrapped with leaf of Julpool or bamboo's leaf. It's shape was simillar to Korea's Song-Pyun but different from materials and cooking method. 3. Jamyong's cooking method was boild the mixture of white rice soup, Myong-Jup, and salt. and then pour the rised Bal. 4. Ye and Lo were boiling product made from new oat and appricot seed flour. It was simillar to sweet drink made from rice, and put them in the jar for storage.

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