Abstract
Phytophthora capsici 4개 균주에 대한 우리나라 고추 시판 품종 100개(저항성 59개, 감수성 41개)의 저항성 정도를 조사하였다. 이들 품종에서 고추 역병균 MY-1, KPC-1, JHAI1-7 및 KPC-7의 평균 발병도는 각각 37, 55, 60 및 74%였으며, 이들 균주에 대하여 감수성을 나타낸 품종은 각각 38, 48, 56, 76개였다. 그리고 실험한 균주 중 병원성이 가장 약한 균주인 MY-1에 대해서는 실험한 품종 중 59개가 저항성을 보였으나, 병원성이 가장 강한 KPC-7 균주에는 단지 6개 품종만이 저항성을 나타냈다. 그리고 실험한 품종 중 4개 품종을 제외한 모든 품종의 역병 저항성은 실험한 P. capsici의 병원성 정도와 반비례하였으며, 고추 품종과 P. capsici 균주간에 특이적인 반응은 발견할 수 없었다. 실험한 품종 중 P. capsici 균주 모두에 대하여 저항성을 보이는 6개 품종을 선발하여, P. capsici 접종원 양과 재배 온도에 따른 이들 품종의 저항성 변화를 조사하였다. 중간 정도 병원성 균주인 KPC-1과 JHAI1-7 균주는 $5{\times}10^4$부터 $1.5{\times}10^6sporangia/pot$를 접종하였을 때에도 이들 고도 저항성 품종의 저항성은 거의 영향을 받지 않았다. 그러나 가장 강한 병원성 균주인 KPC-7에 의해서는 $1.5{\times}10^6sporangia/pot$ 농도로 접종하고 $28-30^{\circ}C$에서 배양하였을 때에는 이들 품종들도 감수성 혹은 중도저항성을 나타냈다. 이상의 결과부터 우리나라 고추 품종들의 역병 저항성은 P. capsici 균주들의 병원성 정도에 영향을 받는다고 생각되었다. Resistance of one hundred commercialized cultivars of chili pepper to four isolates of Phytophthora capsici was evaluated under controlled environmental conditions. The cultivars are commercialized as resistant (59%) and susceptible (41%) to Phytophthora blight in Korea. Mean disease severities of the cultivars on P. capsici MY-1, KPC-1, JHAI1-7, and KPC-7 isolates were 37, 55, 60, and 74%, respectively. In addition, 38 for MY-1, 48 for KPC-1, 56 for JHAI1-7, and 76 cultivars for KPC-7 showed susceptibility. To P. capsici MY-1, the weakest pathogenicity isolate among them, 59 cultivars represented high resistance. By contrast, only six cultivars showed high resistance to P. capsici KPC-7, the strongest isolate. Furthermore, resistance of most cultivars except for three cultivars was negatively correlated with the virulence of P. capsici isolates. And isolate-specific resistance of the chili pepper cultivars could not be found. Among them, six cultivars showing resistance to all the tested isolates were selected for further study. The development of Phytophthora blight on the six cultivars according to inoculum density ($5{\times}10^4$ to $1.5{\times}10^6$ sporangia/pot) and incubation temperature (25 to $30^{\circ}C$) after inoculation of P. capsici was tested. Resistance of the cultivars to P. capsici KPC-1 and JHAI1-7, moderately pathogenic isolates, was hardly affected. But to KPC-7 isolate, the highly resistant cultivars showed susceptiblility or moderate resistance when the seedlings were inoculated with inoculum density of $1.5{\times}10^6$ sporangia/pot and incubated at 28 to $30^{\circ}C$. From these results, it is likely that resistance of chili pepper cultivars to Phytophthora blight is affected by the virulence of P. capsici isolate.
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Claims 16
Claim · model-written summary
Mean disease severity was 37% for MY-1.
- Interactor
- P. capsici MY-1
.jpg?width=60)
Phytophthora capsicie0pathogen - Outcome
- disease severitiese0
- Value
- 37e0
CapsicumOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“Mean disease severities of the cultivars on P. capsici MY-1, KPC-1, JHAI1-7, and KPC-7 isolates were 37, 55, 60, and 74%, respectively”
e1“cultivars of chili pepper”
Claim · model-written summary
Mean disease severity was 55% for KPC-1.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Mean disease severities of the cultivars on P. capsici MY-1, KPC-1, JHAI1-7, and KPC-7 isolates were 37, 55, 60, and 74%, respectively”
e1“cultivars of chili pepper”
Claim · model-written summary
Mean disease severity was 60% for JHAI1-7.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Mean disease severities of the cultivars on P. capsici MY-1, KPC-1, JHAI1-7, and KPC-7 isolates were 37, 55, 60, and 74%, respectively”
e1“cultivars of chili pepper”
Claim · model-written summary
Mean disease severity was 74% for KPC-7.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Mean disease severities of the cultivars on P. capsici MY-1, KPC-1, JHAI1-7, and KPC-7 isolates were 37, 55, 60, and 74%, respectively”
e1“cultivars of chili pepper”
Claim · model-written summary
Thirty-eight cultivars were susceptible to MY-1.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“38 for MY-1, 48 for KPC-1, 56 for JHAI1-7, and 76 cultivars for KPC-7 showed susceptibility”
e1“cultivars of chili pepper”
Claim · model-written summary
Forty-eight cultivars were susceptible to KPC-1.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“38 for MY-1, 48 for KPC-1, 56 for JHAI1-7, and 76 cultivars for KPC-7 showed susceptibility”
e1“cultivars of chili pepper”
Claim · model-written summary
Fifty-six cultivars were susceptible to JHAI1-7.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“38 for MY-1, 48 for KPC-1, 56 for JHAI1-7, and 76 cultivars for KPC-7 showed susceptibility”
e1“cultivars of chili pepper”
Claim · model-written summary
Seventy-six cultivars were susceptible to KPC-7.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“38 for MY-1, 48 for KPC-1, 56 for JHAI1-7, and 76 cultivars for KPC-7 showed susceptibility”
e1“cultivars of chili pepper”
Claim · model-written summary
Fifty-nine cultivars had high resistance to MY-1.
- Interactor
- P. capsici MY-1Phytophthora capsicie0pathogen
- Outcome
- high resistancee0
- Value
- 59 cultivarse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“To P. capsici MY-1, the weakest pathogenicity isolate among them, 59 cultivars represented high resistance”
e1“cultivars of chili pepper”
Claim · model-written summary
Only six cultivars had high resistance to KPC-7.
- Interactor
- P. capsici KPC-7Phytophthora capsicie0pathogen
- Outcome
- high resistancee0
- Value
- six cultivarse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“only six cultivars showed high resistance to P. capsici KPC-7”
e1“cultivars of chili pepper”
Claim · model-written summary
Resistance of most cultivars was negatively correlated with isolate virulence.
- Interactor
- P. capsici isolatesPhytophthora capsicie0pathogen
- Outcome
- resistancee0
- Direction
- negatively correlatede0
- Qualifier
- except for three cultivarse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“resistance of most cultivars except for three cultivars was negatively correlated with the virulence of P. capsici isolates”
e1“cultivars of chili pepper”
Claim · model-written summary
No isolate-specific resistance was found.
- Interactor
- P. capsici isolatesPhytophthora capsicie1pathogen
- Outcome
- isolate-specific resistancee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“isolate-specific resistance of the chili pepper cultivars could not be found”
e1“P. capsici isolates”
Claim · model-written summary
Six cultivars resisted all tested isolates.
- Interactor
- P. capsici isolatesPhytophthora capsicie2pathogen
- Outcome
- resistance to all the tested isolatese0
- Value
- six cultivarse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“six cultivars showing resistance to all the tested isolates”
e1“cultivars of chili pepper”
e2“P. capsici isolates”
Claim · model-written summary
Resistance to KPC-1 was hardly affected by tested inoculum and temperature conditions.
- Treatment
- inoculum densitye1
- Interactor
- P. capsici KPC-1Phytophthora capsicie0pathogen
- Outcome
- Resistance of the cultivarse0
- Direction
- hardly affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Resistance of the cultivars to P. capsici KPC-1 and JHAI1-7, moderately pathogenic isolates, was hardly affected”
e1“inoculum density ($5{\times}10^4$ to $1.5{\times}10^6$ sporangia/pot) and incubation temperature (25 to $30^{\circ}C$)”
e2“cultivars of chili pepper”
Claim · model-written summary
Resistance to JHAI1-7 was hardly affected by tested inoculum and temperature conditions.
- Treatment
- inoculum densitye1
- Interactor
- JHAI1-7e0pathogen
- Outcome
- Resistance of the cultivarse0
- Direction
- hardly affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Resistance of the cultivars to P. capsici KPC-1 and JHAI1-7, moderately pathogenic isolates, was hardly affected”
e1“inoculum density ($5{\times}10^4$ to $1.5{\times}10^6$ sporangia/pot) and incubation temperature (25 to $30^{\circ}C$)”
e2“cultivars of chili pepper”
Claim · model-written summary
Highly resistant cultivars became susceptible or moderately resistant to KPC-7 at high inoculum density and temperature.
- Treatment
- inoculum density of $1.5{\times}10^6$ sporangia/pote0
- Interactor
- KPC-7 isolatee0pathogen
- Outcome
- susceptiblility or moderate resistancee0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“to KPC-7 isolate, the highly resistant cultivars showed susceptiblility or moderate resistance when the seedlings were inoculated with inoculum density of $1.5{\times}10^6$ sporangia/pot and incubated at 28 to $30^{\circ}C$”
e1“cultivars of chili pepper”
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