• 제목/요약/키워드: Yellow spot

검색결과 107건 처리시간 0.022초

재래종 팥의 작물학적 형질 특성 (Agronomic characters of Korean Adzuki Beans (Vigna angularis (Willd.) Ohwi & Ohashi))

  • 노창우;손석용;홍성택;이경희;유인모
    • 한국자원식물학회지
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    • 제16권2호
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    • pp.147-154
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    • 2003
  • 우리나라에서 수집된 재래종 팥 361개의 작물학적 특성을 조사한 결과 수집재래종 팥의 초형은 직립형이 77.8%로 제일 많고 중간형이 15.3%, 만성형이 6.9%로 제일 적었다. 엽형은 원형, 타원형, 점선형 순으로 많았고 화색은 황색 이 89.5%로 가장 많았고 담황색 9.4%, 농황색 1.1% 순이었다. 종피색은 적색 60.6%, 회색 26.9%이며 그 외 녹색, 백색, 담흑색, 적지흑, 암지흑, 백지갈색 은 1.4∼3.3%로 매우 적었다. 개화일수는 69∼75일, 결실일수는 41∼50일, 생육일수는 111∼120일인 수집종들이 가장 많았다. 경장은 41∼60 cm에서 50,2%, 개체당 협수는 16∼20개에서 40.2%, 100립중은 8-10g이 30.5%로 가장 분포비율이 높았다.

효율적인 감성색채교육을 위한 휴 앤드 톤 컬러 시스템의 설계 연구 (Design Research of Hue and Tone Color System for Efficient Sensual Color Education)

  • 이경희
    • 패션비즈니스
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    • 제23권2호
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    • pp.62-76
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    • 2019
  • The importance of color is increasing in modern life and we call such present age that is 'color age'. These day that all areas of life are being getting fashionize, ordinary people as well as design specialist are required of culture and knowledge about color. Color design education is important curriculum at liberal arts course and in special design trainning course. Color expresses by hue, value and chroma in Munsell color system. But design spot is using mainly hue and tone color system. Therefore it is very important that educate tone concept in color design education. When think influence that increase of color, we must develop hue and tone color system in suitable for color design education. This research designed usable 'Hue and Tone 313 Colot System' for efficeint sensual color education. Also I designed 313 color papers with attached the Munsell notation which could reappear the spare color paper when needed. The 10 hues classification of this system are Red, Yellow Red, Yellow, Green Yellow, Green, Blue Green, Blue, Purple Blue, Purple, Red Purple. The 19 tones classification of this system are vivid, light, standard, deep, pale, soft, dull, dark, very pale, light grayish, medium grayish, dark grayish, very dark, off White, off Pale, off Light Gray, off Medium Gray, off Dark Gray, off Black. The special colors of this system are gold, silver and copper.

2006년과 2007년 상주와 구례에서 발생한 오이 바이러스병의 병징 특성 (Symptoms of Cucumber Virus Diseases Occurred in Sangju and Gurye in 2006 and 2007)

  • 조점덕;이중환;고숙주;최홍수;이수헌;최국선;김정수
    • 식물병연구
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    • 제17권2호
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    • pp.196-204
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    • 2011
  • 오이 주요재배지인 상주와 구례에서 오이에 발생하는 바이러스병을 2006년과 2007년에 조사하였다. 경상북도 상주 지역 오이의 병징 발생률은 농가 포장에 따라서 14%에서 90%이었으며 평균 발생률은 46%이었다. 전라남도 구례 지역의 경우 농가 포장에 따라서 9%에서 100%이었으며 평균 발병률은 48%이었다. 주요 발생 바이러스는 CGMMV, ZYMV, PRSV와 WMV2의 4종류였다. 이러한 바이러스는 단독감염과 복합감염 형태로 발생하였다. 2006년과 2007년의 평균 감염률을 보면 단독감염의 경우 ZYMV가 23.5%로 가장 많이 발생하고 있었으며, PRSV가 13.0%, CGMMV가 9.0%, WMV2가 2.0% 순서이었다. 복합감염의 경우에는 2종 바이러스 복합감염이 31.5%, 3종 복합감염이 7.5%, 4종 복합감염이 2.0% 발생하였다. 오이에 발생하고 있는 바이러스 감염형태는 단독감염과 2종 복합감염이 각각 47.7%와 31.5%로 총 88.7%로 대부분을 차지하였다. 오이에 발생한 바이러스의 복합감염으로 많이 발생되는 바이러스로는 ZYMV, CGMMV, PRSV, BBWV2의 순서이었다. 단독감염된 오이의 병징은 다다기 계통이나 취청 계통 오이 모두 비슷한 병징이 나타났으나, CGMMV의 경우 퇴록 반점, 엽맥 퇴록, 엽맥 쭈그러짐 등 매우 다양한 병징이 나타났다. ZYMV는 엽맥 퇴록 병징을 위주로 심한 모자이크 및 기형 병징이 나타났다. 그 이외의 PRSV, WMV-2의 병징은 CGMMV와 ZYMV에 의한 병징에 속하는 비교적 약한 병징이었다.

간흡충에 대한 살충성 물질에 관한 연구 IV. 이스라엘잉어(향어) 점액으로부터 살충성 물질 분획 (The Wormicidal Substance of Fresh Water Fishes on Clonorchis IV. Preliminary research on the wormicidal substance from mucus of Cyprinus carpio nudes)

  • 이재구;김평길
    • Parasites, Hosts and Diseases
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    • 제21권1호
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    • pp.21-26
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    • 1983
  • As a series of studios on the suitability as a second intermediate host of Clcnorchis sinensis, the wormicidal effects of mucus from epidermis of Cyprinus carpio nudus were observed. The results obtained were sumlnarized as follows : On the silica gel thin layer chromatography with the greenisll yellow supernatant in acetone: benzene110:90 as carrier, seven spots were observed in iodine chamber. The spot of Rf. 0.225 value among them disclosed the strongest wormicidal effect on the cercaria, the encysted metacercaria, and the adult of C. sinensis. hfeanwhile, no seasonal variations were found in Rf. values and effect of the wormicidal fractions. The wormicidal materials in epidermal mucus of C. carpio nudes and Carassius carassius were compared in their effect, and the former was Inore effective killing substance than the latter. It seemed that C. carpio nodus could not be proper intermediate host of C. sinensis according to results of the present study, in addition to our previous observation results.

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Oidiopsis taurica (L v.) Arnaud (=Leveillula taurica)에 의한 토마토 흰가루병 발생 (Occurrence of Powdery Mildew on Tomato Caused by Oidiopsis taurica (L v.) Arnaud (=Leveillula taurica) in Korea)

  • 강수웅;권진혁;신원교;김희규
    • 한국식물병리학회지
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    • 제11권4호
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    • pp.380-382
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    • 1995
  • Yellow spot or blotch symptoms on the upper surface of leaf, without the production of velvet-like fungi on the lower surface of leaf as in the gray mold of tomato caused by Cladosporium fulvum, were observed in tomato (cv. Seokwang) plants in May, 1995, in a vinyl-house of the experimental plot of Gyeongnam Provincial Rural Development Administration, Chinju, Gyeongnam, Korea. We identified this disease as powdery mildew of tomato caused by Oidiopsis taurica (L v.) Arnaud (=Leveillula taurica), which was new to Korea. Conidia of the fungus were borne on uni- or bi-septated conidiophores which were developed through the stomata of the tomato leaf. The conidia were slender, clavate and variable in size (31~111.6$\times$13.1 ${\mu}{\textrm}{m}$). The fungal conidia isolated from tomato leaves were inoculated to tomato plants, and the occurrence of the same disease was confirmed based on the symptomatology and the morphology of the pathogen reisolated.

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In Vitro Morphological Characteristics of Pyrenophora tritici-repentis Isolates from Several Algerian Agro-Ecological Zones

  • Benslimane, Hamida;Aouali, Souhila;Khalfi, Assia;Ali, Shaukat;Bouznad, Zouaoui
    • The Plant Pathology Journal
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    • 제33권2호
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    • pp.109-117
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    • 2017
  • Tan spot caused by the fungus Pyrenophora triticir-repentis is a serious disease of wheat, which is on increase in recent years in Mediterranean region. In the field this fungus produces a diamond-shaped necrotic lesions with a yellow halo on wheat foliage. The objective of this study was to characterize and compare several monospore isolates of P. tritici-repentis collected from different infected wheat fields in various locations of Algeria, and find the morphological differences between them, if any. The results revealed wide morphologically variation among the isolates based on colony colors and texture, mycelial radial growth and conidial size.

First Report of Foliar Blight on Dendropanax morbifera Caused by Alternaria panax

  • Deng, Jian Xin;Kim, Chang-Sun;Oh, Eun-Sung;Yu, Seung-Hun
    • Mycobiology
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    • 제38권4호
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    • pp.316-320
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    • 2010
  • Leaf spot and blight disease was observed on two-year-old seedlings of Dendropanax morbifera (Korean name: Hwangchil tree) during July of 2008 in Jindo Island, Korea. Symptoms included yellow-brown to dark brown irregularly enlarged spots frequently located along the veins of leaves. The lesions were often surrounded by chlorotic haloes. Severe leaf blight and subsequent defoliation occurred when conditions favored disease outbreak. The causal organism of the disease was identified as Alternaria panax based on morphological characteristics and sequence analysis of the internal transcribed spacer region of rDNA. A. panax isolates induced leaf spots and blight symptoms not only on D. morbifera but also on the other members of Araliaceae tested. This is the first report of foliar blight caused by A. panax on D. morbifera.

해호미 구충성분의 검색 ( I ) (Detection of Anthelmintic Components of Sargassum thunbergii $K_{UNTZE}$ (I))

  • 이완하;민경낙
    • 생약학회지
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    • 제1권2호
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    • pp.19-22
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    • 1970
  • It was found that the extracts of Sargassum thumbergii (Sargassaceae) had an anthelmintic action on Ascaris suilla and further examinations were made on the anthelmintic compounds of the seaweed. The anthelmintic principle is soluble in water, adsorbed in aqueous extract with activated carbon and eluted from the carbon with 90% aqueous methanol solution. But it is not adsorbed on alumina and amberite IR-120 (H-type). The anthelmintic fractions were prepared by the use of these properties. The active principle of Sargassum thunbergii was pharmacologically examined and was found to decrease the tenisty, tonus, mobility and amplitude of Eisenia foetida nerve muscles. The active principle was subjected to paper partition chromatography but yellow spot to ninhydrin was not revealed.

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Three Species of Spilomelinae (Lepidoptera, Crambidae) New to Korea

  • Sohn, Jae-Cheon;Kim, Sung-Soo;Choi, Sei-Woong
    • Animal Systematics, Evolution and Diversity
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    • 제37권1호
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    • pp.33-38
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    • 2021
  • Three species of Spilomelinae, Camptomastix septentrionalis Inoue, 1982, Omiodes indistinctus (Warren, 1892) and Piletocera aegimiusalis (Walker, 1859), are reported for the first time from Korea. Camptomastix septentrionalis is distinguished from Camptomastix hisbonalis (Walker, 1859) in the smaller body size, the lack of a clear discal spot on the forewings, and having the less protruding costa of the valva in the male genitalia and the smaller antrum in the female genitalia. Omiodes indistinctus is distinguished from Omiodes tristrialis(Bremer, 1864) in having the narrower forewings with the faded postmedian and subbasal lines and a densely-setose, sclerotized area on the terminal part of uncus dorsally in the male genitalia. Piletocera aegimiusalis is distinguished from Piletocera sodalis(Leech, 1889) in the larger body size and the lack of a pale yellow patch on the hindwings. Photos of the external and genital features are provided for the three newly-recorded spilomeline species.

Alternaria mali에 의한 아로니아 점무늬낙엽병 (Alternaria Leaf Spot Caused by Alternaria mali on Black Chokeberry in Korea)

  • 함수상;권미경;김병련;한광섭;남윤규
    • 식물병연구
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    • 제22권1호
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    • pp.50-54
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    • 2016
  • 2014년 6월 초 충남 예산과 금산의 농가포장에서 재배 중인 아로니아에서 점무늬낙엽병으로 의심되는 증상이 관찰되었다. 초기에는 잎에 갈색의 작은 점무늬가 생기고 이것이 확대되면서 둥근 겹무늬를 형성하고, 암갈색으로 변하였다. 그리고 병세가 심해지면 잎 전체에 병반이 확대되면서 떨어지는 증상이 관찰되었다. 병든 아로니아 잎에서 분리한 병원균은 PDA에 배양하였을 때 균체는 올리브 회색과 진한 회색으로 다양한 색을 나타내었다. 포장에서 감염된 잎과 PDA에서 분리한 분생포자의 크기는 각각 $19-50{\times}5-9{\mu}m$, $20-59{\times}8-13{\mu}m$이고, 길거나 짧은 부리를 가지며, 분생자경의 끝에 1-3개의 분생포자가 형성되었으며, 3-8개의 횡경막을 보이고 종경막은 없거나 1-3번째 횡경막 내에 1개 형성되었다. 병원성 검정 결과, 접종 7일 후 아로니아와 사과 모두에서 자연발생한 병징과 동일하게 관찰되었다. 이상 병원균의 형태적 특성, 병원성 검정과 ITS rDNA 염기서열 비교분석 결과를 토대로 아로니아에서 분리한 병원균은 A. mali로 동정하였고, 이 병을 아로니아 점무늬낙엽병으로 명명하였다.