• Title/Summary/Keyword: Cucumis melo

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Soft Rot on Cucumis melo var. makuwa Caused by Rhizopus oryzae

  • Kwon, Jin-Hyeuk;Kim, Jin-Woo;Lee, Yong-Hwan;Shim, Hong-Sik
    • Mycobiology
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    • v.38 no.4
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    • pp.336-338
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    • 2010
  • Rhizopus oryzae is reported for the first time on Cucumis melo L. var. makuwa Makino. A detailed description of this Korean specimen is given, along with its rDNA internal transcribed spacer sequence. On the basis of mycological characteristics and molecular data, the fungus was identified as R. oryzae Went & Prinsen Geerligs.

The Effect of Soil Water Content after Fruit Maturity on Yield and Quality in Muskmelon (Cucumis melo L.) (과실비대성숙기 토양수분조건이 머스크멜론의 수량과 품질에 미치는 영향)

  • 박동금;권준국;이재한;엄영철;김회태
    • Proceedings of the Korean Society for Bio-Environment Control Conference
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    • 1997.05a
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    • pp.1-4
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    • 1997
  • 멜론(Cucumis melo L.)은 서아프리카, 중근동, 인도, 중국등이 원산지로 알려져 있으며 유럽형 넷트멜론과 동양계 무넷트멜론으로 크게 분류되고 있다. 우리나라는 삼국시대부터 동양계멜론인 참외가 주로 재배되어 왔으나, 최근 국민소득수준의 향상과 더불어 고급 과채류에 대한 선호도가 높아짐에 따라 넷트 멜론의 재배가 증가되고 있는 추세이다. (중략)

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Volatile Flavor Components in Watermelon(Citrullus vulgaris S.) and Oriental Melon(Cucumis melo L.) (국내산 수박(Citrullus vulgaris S.) 과 참외(Cucumis melo L.) 의 휘발성 향기성분)

  • Kim, Kyong-Su;Lee, Hae-Jung;Kim, Sun-Min
    • Korean Journal of Food Science and Technology
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    • v.31 no.2
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    • pp.322-328
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    • 1999
  • Volatile flavor components of watermelon (Citrullus vulgaris S.) and oriental melon (Cucumis melo L.) obtained by simultaneous steam distillation and extraction apparatus were separated by gas chromatography (GC) and gas chromatography-mass spectrometry (GC/MS). Thirty seven and fifty five volatile flavor components were identified in watermelon and oriental melon, respectively. (Z)-3-Nonen-1-ol, (Z,Z)-3,6-nonadien-1-ol, (E,Z)-2,6-nonadienal and (E)-2-nonenal containing unsaturated nine carbon atoms were the characteristic flavor components of watermelon. $C_{9}-Unsaturated$ esters including (Z)-3-nonenyl acetate, (Z)-6-nonenyl acetate, (Z,Z)-3,6-nonadienyl acetate and thioester were important components in the flavor profile of oriental melon.

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Cognition Enhancing Effect of Muskmelon (Cucumis melo) Extracts on Scopolamine-induced Memory Impairment in Mice (참외추출물이 스코폴라민 유도 기억상실 흰쥐의 인지능 회복에 미치는 효과)

  • Park, Sang-Shin;Park, Na-Omi;Kang, Ju-Uk;Shin, Suk-Chul;Lee, Dong-Ung
    • Journal of Life Science
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    • v.19 no.5
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    • pp.688-691
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    • 2009
  • The methanol extract of muskmelon (Cucumis melo) has been investigated for its cognition enhancing effects by evaluation of inhibitory activities on acetylcholinesterase, a degrading enzyme of acetylcholine, a brain neurotransmitter, and ${\beta}$- secretase, which forms the ${\beta}$-amyloid toxic protein from its precursor protein. A passive avoidance task, one of the animal model experiments for learning and memory, was also performed. As a result, the melon extract showed 15.8% and 35.3% inhibition on acetylcholinesterase and ${\beta}$-secretase, respectively, with a final concentration of 100 mg/ml. In the animal model test, melon extract significantly (p<0.05) lengthened the step-through latency time by 22.7% compared to the control group, suggesting that melon extract has, indeed, an effect on cognition enhancement.

Chromosome Compositions of Four Cultivated Cucurbitaceae Species. (박과 작물 4종의 핵형분석)

  • Kwon, Ji-Yeon;Park, Hye-Mi;Lee, Sung-Nam;Choi, Sun-Hee;Song, Kyung-A;Kim, Hyun-Hee
    • Journal of Life Science
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    • v.18 no.7
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    • pp.1019-1022
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    • 2008
  • The chromosome numbers and compositions were investigated in four cultivated species of Cucurbitaceae; Cucumis sativus L., Citrullus lanatus (Thunb.) Matsum. et Nakai, Cucumis melo L., Luffa cylindrica (L.) Roemer. through general aceto-orcein staining method. The chromosome compositions of four species were diploids of 2n=22, 2n=24 and 2n=26 respectively. The chromosomes were relatively small and showed gradual length degradation from $2.50\;{\mu}m$ to $2.16\;{\mu}m$ in Cucumis sativus, $3.71\;{\mu}m$ to $2.11\;{\mu}m$ in Cucumis melo, $3.20\;{\mu}m$ to $2.40\;{\mu}m$ in Citrullus lanatus and $3.17\;{\mu}m$ to $1.97\;{\mu}m$ in Luffa cylindrica. The chromosome types consisted of all metacentrics in Cucumis sativus, seven pairs submetacentrics and five pairs metacertrics in C. melo, four pairs of submetacentrics and seven pairs metacertrics in Citrullus lanatus, and two pairs submetacentrics and eleven pairs metacentrics in Luffa cylindrica (L.) Roemer.. The satellites were found in a pair of chromosomes in C. melo and two pairs in Luffa cylindrica. The chromosome compositions in these four species showed species-specific patterns and seemed to provide useful informations for breeding and molecular cytogenetic works on Cucurbitaceae.

Local Names of Weedy Melons (Cucumis melo L.) in Korea (우리나라 야생 잡초 참외의 방언문화)

  • Lee, Woo Sung;Kim, Byung-Soo;Suh, Dong-Hwan
    • Horticultural Science & Technology
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    • v.30 no.6
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    • pp.764-768
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    • 2012
  • Local names of weedy melons, growing as wild-ecotype along the southern and western coasts, and around Jeju island in Korea were collected. The collected local names ranked in frequency in descending order of Gaetongchamoe, Jurae, Juloe, Toloe, Joronge, Jureongge, Tongoe, Jorange, Dolchamoe, Tongchamoe, Ganjeolgui, and Jwibangulchamoe. Gaetongchamoe, Juloe, Toloe, Jureongge, Tongoe, Jorange, Dolchamoe, Tongchamoe were the words derived from natural habitats of the weedy melons, and Jurae, Jorongge, Kare derived from usage as playing toys.

Development of Meloidogyne arenaria on Oriental Melon (Cucumis melo L.) in Relation to Degree-day Accumulation Under Greenhouse Conditions

  • Kim, Dong-Geun;Yeon, Il-Kwon
    • The Plant Pathology Journal
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    • v.17 no.3
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    • pp.159-163
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    • 2001
  • Influence of soil temperature [accumulated degree-day for the base temperature $5^{\circ}$($\textrm{DD}_5$)] on the development of Meloidogyne arenaria were studied in a winter grown oriental melon greenhouse in Seongju, Korea. Egg masses were first observed on roots at the accumulation of 565 $\textrm{DD}_5$(40 days after transplanting), suggesting that the nematode has completed the first generation in 40 days. Second-stage juveniles (J2) densities were lowest at 863 $\textrm{DD}_5$ in April, first increased at 1,334 $\textrm{DD}_5$ in May, peaked at 2,951 $\textrm{DD}_5$ in July, and decliner thereafter. Development of egg masses and J2 density in soil revealed that M. arenaria could develop in 7-8 generations in a year in the greenhouse. Degree-day monitoring, therefore, could aid to predict nematode development in soil and can be valuable tool a to develop root-knot nematode control strategies.

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Occurrence of Damping-off Caused by Pythium spinosum on Cucumis melo in Korea

  • Park, Mi-Jeong;Back, Chang-Gi;Han, Kyung-Sook;Park, Jong-Han
    • Research in Plant Disease
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    • v.22 no.3
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    • pp.190-193
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    • 2016
  • In 2010 and 2012, damping-off symptoms were found on melon seedlings grown in Yeongam and Suncheon, Korea. Water-soaked and discolored lesions appeared on the lower stems of the infected plants. The diseased plants became wilted and stunted, and eventually collapsed. On the basis of morphological characteristics and molecular analyses of internal transcribed spacer (ITS) rDNA and cytochrome oxidase II (cox2) sequences, the causal organism was identified as Pythium spinosum. The isolates were pathogenic to melon under pot conditions. To our knowledge, this is the first report of P. spinosum causing damping-off on melon in Korea.

Occurrence of Fruit Rot of Melon Caused by Sclerotium rolfsii in Korea

  • Kwon, Jin-Hyeuk;Chi, Tran Thi Phuong;Park, Chang-Seuk
    • Mycobiology
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    • v.37 no.2
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    • pp.158-159
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    • 2009
  • In 2007 to 2008, a fruit rot of Melon (Cucumis melo L.) caused by Sclerotium rolfsii occurred sporadically in a farmer's vinyl house in Jinju City. The symptoms started with watersoaking lesion and progressed into the rotting of the surface of fruit. White mycelial mats appeared on the lesion at the surface of the fruit and a number of sclerotia formed on the fruit near the soil line. The sclerotia were globoid in shape, 1${\sim}$3 mm in size, and white to brown in color. The hyphal width was measured 3 to 8 ${\mn}$. The optimum temperature for mycelial growth and sclerotia formation was 30 on PDA. Typical clamp connections were observed in hyphae of grown for 4 days on PDA. On the basis of symptoms, mycological characteristics and pathogenicity to the host plant, this fungus was identified as Sclerotium rolfsii Saccardo. This is the first report of the fruit rot of Melon caused by S. rolfsii in Korea.