• Title/Summary/Keyword: 병해저항성

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Studies on the disease resistance of tobacco varieties to Black shank, Black root rot Wild fire, Brown spot, CMV-Y and Blue mold -Disease resistance of Korean native varieties- (담배중요병해저항성에 관한 연구 특히 한국재래종에 대하여)

  • Il Hou
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.4 no.1
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    • pp.103-108
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    • 1968
  • Resistance to various diseases of Korean native varieties were investigated in field. The results obtained are summarized as follows: 1) The varieties Ubangtchio and Osib-eubthio were moderately resistant to black shank, but Suantchio, Usultchio and Gwangtchio were slightly resistant. Dixie Bright 101, $H_2$ and Bright Yellow 4 were more resistant to black shank than any of the Korean native varieties. 2) Mokgitchio, Ubangtchio and Osib-eubtchio were moderately resistant to black root rot, but Useultchio Suantchio and Hoetchio were susceptible than Others. 3) Muktchio, Hoetchio and Ubangtchio were slightly resistant to wild fire. 4) Osib-ebthio was highly resistant to brown spot, but Ubangtchio, Hyangtchio and Mokgitchio were moderately resistant and Useultchio was susceptible to brown spot, but it was resistant than Bright ellow 4 or Bernhart 1000-1. 5) Hyangtchio was slightly resistant to CMV-Y. According to these results, except Virus disease, Ubangtchio was resistant to all of the above mentioned diseases. Osib-eubtchio, Hoetchio, Hyangtchio and Suantchio showed proferable disease resistant and these might be well utilized as breeding materials.

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Inheritance of Resistance to Bacterial Spot and to Phytophthora Blight in Pepper (고추의 더뎅이병(病) 저항성(抵抗性)과 역병(疫病) 저항성(抵抗性)의 유전(遺傳))

  • Kim, Byung Soo;Kwon, Young Seok;Shon, Eun Young
    • Current Research on Agriculture and Life Sciences
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    • v.9
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    • pp.127-133
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    • 1991
  • PI201232, a pepper line resistant to Phytophthora capsici Leonian, was crossed with PI2713222 and P1163192, resistant to Xanthomonas campestTis pv. vesicatoria (Doidge) Dye and inheritance of the resistance to each disease and genetic relationship between the two disease resistances was studied. Non-hypersensitive resistance to race 3 of X. c. pv. vesicatoria of PI271322 was inherited in a quantitative mode. Resitance to P. capsici of PI201232 was inherited in a mode close to two dominant alleles. Hypersensitive resistance to race 1 of X. c. pv. vesicatoria of PI271322 was inherited in a mode of single dominant allele. PI 163192 was consistently resistant to both race 1 and race 3 of X c. pv. vesicatoria and the resistance was inherited in a quantitative mode with high dominance effect. Resistance to X. c. pv. vesicatoria was inherited independently from resistance to P. capsici.

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식량증산/멸구류의 발생동향과 방제대책 - 일반계 애멸구에 의한 바이러스병 우려돼

  • 조정익
    • The Bimonthly Magazine for Agrochemicals and Plant Protection
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    • v.7 no.4
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    • pp.97-109
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    • 1986
  • 우리나라의 주곡생산은 다수확 신품종의 보급과 재배기술의 발전으로 어느정도 안정상태에 이르고 있다. 그러나 병해충의 발생과 기상재해는 식량자급에 가장 큰 문제점이 되고 있다. 따라서 미곡생산을 안정시키고 지속적인 다수확을 이루기 위해서는 병해충에 대한 저항성 품종의 육성과 아울러 병충해의 적절한 종합방제 체계의 확립이 선행되어야 하겠다.

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Evaluation of resistance to Pierce's disease among grapevine cultivars by using the culture filtrates produced from Xylella fastidiosa (Xylella fastidiosa의 배양여액을 이용한 포도나무 피어스병 품종 저항성 검정)

  • Park, Myung Soo;Lu, Jiang;Yun, Hae Keun
    • Journal of Plant Biotechnology
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    • v.44 no.4
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    • pp.394-400
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    • 2017
  • This study investigated whether culture filtrates produced by Xylella fastidiosa can be used to determine the varietal susceptibility to Pierce's disease in grapevines (Vitis spp.) as a substitute for pathogen inoculation or field screening. A bioassay of grape leaves with culture filtrates from the pathogen showed that their phytotoxicities were active and host-selective. Ethyl acetate extracts from them also showed toxicities and host selectivity in both bunches of grapes and muscadine grapes. The sensitive range of plants to the culture filtrates and their ethyl acetate extracts was consistent with the host range of the Pierce's disease pathogen. Susceptible cultivars are sensitive to even highly diluted culture filtrates, while resistant cultivars were not affected even at their original culture filtrates. Susceptible cultivars were more sensitive to the undiluted culture filtrate than were highly diluted culture filtrates, and the younger leaves were the most sensitive to the culture filtrates in grapes. Although some European grape cultivars showed moderately susceptibility in this study, the determination of varietal resistance to Pierce's disease by the treatment of culture filtrates of pathogens could provide valuable information for the preliminary selection of genetic resources and seedlings from hybridization in a disease resistant grape breeding program.

Evaluation of Pear Cultivar Susceptibility to AK-toxin Produced by Alternaria kikuchiana (배 검은무늬병균 (Alternaria kikuchiana)이 생성(生成)하는 AK독소(毒素)에 대한 배품종(品種)의 감수성(感受性) 진단(診斷))

  • Park, Jong Seong;Yu, Seung Hun
    • Korean Journal of Agricultural Science
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    • v.15 no.1
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    • pp.1-7
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    • 1988
  • Out of 24 isolates of Alternaria collected from pear leaves, only 7 isolates from cv. Nijiseiki leaves were specifically pathogenic to susceptible pear cultivar(Nijiseiki). Other isolates from cv. Chojuro, Oksankichi and Sinko did not show any pathogenicity to pear leaves. Pathogenic isolates of Alternaria kikuchiana produced host-specific toxin (AK-toxin) in liquid culture which caused veinal necrosis only on susceptible pear leaves, while nonpathogenic isolates did not produce this toxin. Varietal susceptibility among pear cultivars to the pathogen was investigated by evaluating HST (AK-toxin) sensitivity of pear leaves, as a substitute for spore inoculation. AK-toxin which the fungus produces was toxic to pear cultivars susceptible to the pathogen such as Isipsegi and Sinsu, but was harmless to resistant pear cultivars such as Chojuro, Oksankichi, Niitaka etc. Changes in disease susceptibility and toxin sensitivity of pear leaves with aging was investigated. Disease susceptibility and toxin sensitivity in cv. Sinsu leaves appeared to vary with leaf aging; the young leaves were visibly susceptible, but older leaves (more than 2 week old leaves) became resistant.

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