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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
> Journal Vol & Issue
Research in Plant Disease
Journal Basic Information
Journal DOI :
Korean Society of Plant Pathology
Editor in Chief :
Volume & Issues
Volume 10, Issue 4 - Dec 2004
Volume 10, Issue 3 - Sep 2004
Volume 10, Issue 2 - Jun 2004
Volume 10, Issue 1 - Mar 2004
Selecting the target year
Review of Researches on Rhizome Rot of Ginger and Future Tasks for Its Management in Korea
Kim, Choong-Hoe ;
Research in Plant Disease, volume 10, issue 2, 2004, Pages 87~93
DOI : 10.5423/RPD.2004.10.2.087
Rhizome rot of ginger, caused by Pythium myriotylum, a major limiting factor for its production, has occurred annually, but become severe, especially in hot and humid years with frequent rainfalls in Korea. Most studies on rhizome rot have been carried out since 1980s in the National Institute of Agricultural Sciences and Technology, Honam Crop Experimental Station and Choongnam Provincial Rural Development Administration. Many aspects of rhizome rot, such as survey of the disease incidence, taxonomy, pathogenicity and physiology of pathogen, and ecology of soilborne inocula have been studied in the researches. However, intensive studies have been concentrated on management technologies of the disease including seed-rhizome disinfection, soil sterilization, evaluation of cultivar resistance, and fungicide application, and most developed technologies have been used in commercial farmings. In future, development of resistant varieties and simple soil disinfection technologies applicable in Korean condition and economically feasible fungicide application technology have to be developed for better management.
Diseases and the Symptoms Recently Occurred on `Shiranuhi` Citrus Cultivar in Jeju Island
Hyun, Jae-Wook ; Kim, Dong-Hwan ; Kim, Kwang-Sik ; Lee, Seong-Chan ; Ko, Sang-Wook ; Lim, Han-Cheol ;
Research in Plant Disease, volume 10, issue 2, 2004, Pages 94~99
DOI : 10.5423/RPD.2004.10.2.094
`Shiranuhi` citrus cultivar bred by crossing `Kiyomi` tangor and `Nakano No.3` ponkan is cultivated in polyethylene film house, and the number of cultivating farmers is rapidly increasing in recent years. Recently, some diseases are taking place on `Shiranuhi` fruit in some orchards, and were to be big problem in some case. It was surveyed that six diseases were mainly taken place in `Shiranuhi` cultivating orchards in Jeju Island. They were Phytophthora citrophthora, Alternaria sp., Penicillium digitatum, Botrytis cinerea, Diaporthe citri and Xanthomonas axonopodis pv. citri.
Leaf Blight of Castor Bean Caused by Phytophthora nicotianae and P. palmivora var palmivora
Kim, Byung-Soo ; Lim, Yang-Sook ; Kim, Jeong-Hoon ;
Research in Plant Disease, volume 10, issue 2, 2004, Pages 100~104
DOI : 10.5423/RPD.2004.10.2.100
Two species of Phytophthora were isolated from a leaf blight disease found on castor bean plants growing at a residential area of Hwanggeum-dong in Daegu city. One species was producing conspicuously papillate, noncaducous, ovoid to obpyriform sporangia, 31.2-58.5
in range with an average of 46.4
on simple sympodial sporangiophores, was heterothallic with oogonia globose, 22.5-35.0
with an average of 30
in diameter, oospores plerotic, 18.8-30.0
in range averaging 25.4
, and with antheridia amphigynous. This species was identified as P. nicotianae Breda de Haan. The other species produced papillate, caducous, ovoid to ellipsoid sporangia with pedicel, 21.5-54.6
in range with an average of 41.7
, and was heterothallic with oogonia globose, 21.3-26.8
with an average of 23.0
in diameter, oospores plerotic, 17.5-23.8
in range averaging 20.2
, and with antheridia amphigynous. This species was identified as P. palmivora (Butler) Butler. Both species produced chlamydospores. Pathogenicity of the 2 speices was confirmed by foliar inoculation of castor bean seedlings. Both species have been reported to infect castor bean plants in a few foreign countries but it is the first that a disease of castor bean plants caused by either or both of the species was found in Korea.
Pathogenicity of Two Species of Sclerotium to Nine Cultivars of Garlic Cultivated Widely in Korea
Kim, Yong-Ki ; Kwon, Mi-Kyung ; Cho, Weon-Dae ; Kim, Tack-Soo ; Shim, Hong-Sik ; Lee, Yong-Hwon ; Lee, Chan-Jung ; Lee, Seong-Chan ;
Research in Plant Disease, volume 10, issue 2, 2004, Pages 105~111
DOI : 10.5423/RPD.2004.10.2.105
Mycelial growth and days required for sclerotial formation(DRSF) in vitro, and disease incidence of infected plants in the field were investigated to evaluate disease resistance of nine garlic cultivars against two species of Sclerotium causing garlic white rot. There were differences among mycelial growth and sclerotial formation of two white rot pathogens on different garlic cultivars in vitro. Mycelial growth showed the highest level on the clove of `Daeseo`. Sclerotia of two white rot pathogen were formed the earliest on the clove of `Kodang` and the latest on the clove of `Namdo`. In field trial all of nine garlic cultivars were highly susceptible to Sclerotium cepivorum and cold-type garlics were less susceptible than warm-type garlics. Meanwhile garlic cultivars used showed differences among resistant responses to Sclerotium sp., forming large sclerotia. All of warm-type garlics showed highly susceptible response, but three cold-type garlics, `Seosan`, `Danyang` and `Yechon` showed moderate resistant response and `Euisung` showed resistant response. To evaluate cultivar resistance of garlics quantitatively disease progress curve was transformed as linear regression equation. Among the intercept (early disease incidence) and the slope (disease infection rate) obtained from the transformed equation, final disease incidence, and area under disease progress curve(AUDPC), AUDPC was the most effective to evaluate disease resistance of garlics to both of white rot pathogens. There was little correlation between mycelial growth and sclerotial formation on garlic cloves in vitro, and epidemiological parameters (early disease incidence, final disease incidence, disease infection rate, AUDPC) obtained from the field trial. Mycelial growth of S. cepivorum was positively correlated with final disease incidence and disease infection rate obtained from the field trial, meanwhile DRSF was negatively correlated with the epidemiological parameters.
Overwintering of the Pathogen and Factors Affecting Disease Develpoment of Rice Brown Spot Caused by Cochliobolus miyabeanus
Yeh, Wan-Hae ; Lee, Hoon-Seop ; Kim, Yong-Ki ; Shim, Hong-Sik ; Jee, Hyeong-Jin ; Nam, Ki-Woong ;
Research in Plant Disease, volume 10, issue 2, 2004, Pages 112~116
DOI : 10.5423/RPD.2004.10.2.112
This study was carried out to investigate factors affecting disease development of rice brown spot caused by Cochliobolus miyabeanus in the field and under the greenhouse conditions. In normal paddy fields, the pathogen was more frequently isolated from dried rice straws than wet straws after overwintering. The pathogen was also readily isolated from wet rice straws of salty paddy fields although infection rate of the fields was low. The disease symptom was first observed at 2 to 3days after inoculation when the seedlings were kept for 6 hours in dew chamber. The number of lesions peaked at 14 hr incubation in cultivars Chucheongbyeo and 24 hr incubation in cultivar Daesanbyeo and Tetep. Sixty three-d-old seedlings were more susceptible than 21 to 49-d-old seedlings regardless of cultivar. There was some difference in number of lesions observed, but the lesions were evenly spread regardless of leaf position. Light on the rice seedlings at 3,000 lux or 6,000 lux showed more severe symptoms than those in the dark.
Gray Mold of Statice (Limonium shinuatum) Caused by Botrytis cinerea in Korea
Kwon, Jin-Hyeuk ; Park, Chang-Seuk ;
Research in Plant Disease, volume 10, issue 2, 2004, Pages 117~120
DOI : 10.5423/RPD.2004.10.2.117
In April of 2003, the gray mold disease occurred severely on statice (Limonium shinuatum Mill. cv. Sophia) grown in the commerical farms in Seosang-myon, Hamyang-gun, Gyeongnam Province, Korea, 2003. The infected plants were started with water-soaking lesions in the stems, the leaves and the flowers became withered and discolored to gray or dark from the tip then gradually expanded to die. The conidia and mycelia of the pathogen appeared on flowers, leaves, calyx and flower stalk. The conidia were gray, I-celled, mostly ellipsoid or ovoid in shape and were 8∼20 x 6∼14
in size. Conidiophores were 14∼34
in size. The sclerotia were formed abundantly on potato-dextrose agar. The optimum temperature for sclerotial formation was 2
. Pathogenicity of the causal organism was proved according to Koch`s postulate. The causal organism was identified as Botrytis cinerea Persoon: Fries based on mycological characteristics. This is the first report on gray mold of statice (Limonium shinuatum) caused by Botrytis cinerea in Korea.
A Target Leaf Spot Disease Caused by Corynespora cassiicola on Cucumber Cultivated in Green House
Kwon, Mi-Kyung ; Yang, Kwang-Yeol ; Cho, Baik-Ho ;
Research in Plant Disease, volume 10, issue 2, 2004, Pages 121~125
DOI : 10.5423/RPD.2004.10.2.121
An epidemic of target leaf spot of cucumber (Cucumis sativus) occurred in commercial greenhouses in Korea in 2000/2001. The early symptoms on the leaves were small brown spots with yellow halos. These lesions became irregular enlarging in diameter and eventually defoliation resulted. The causal agent was a fungus with morphological characteristics matching Corynespora cassiicola. The sequence of the ITS region of C. cassiicola CM2000-1 was identical to that of an authentic strain of Corynespora cassiicola. Optimal germination of spores and mycelial growth on plate was at 3
. A long dew period on the leaf surface and high temperatures were the main contributing factors for disease development and the greenhouse epidemic. Artificial inoculation of the Korean isolate of C. cassiicola revealed resistance in some Korean cucumber cultivars.
Leaf Spot of Kudzu (Pueraria lobata) Caused by Alternaria tenuissima
Kim, Ja-Moon ; Lee, Jung-Sook ; Song, Wan-Yeob ; Lee, Sook-Kyung ; Kim, Hyung-Moo ; Seo, Byung-Soo ;
Research in Plant Disease, volume 10, issue 2, 2004, Pages 126~129
DOI : 10.5423/RPD.2004.10.2.126
In July of 2002, leaf spot disease was found on kudzu (Pueraria lobata) leaves in Jeonbuk province. A small leaf spot was appeared on leaves as a typical symptom and the spot was then surrounded by chlorotic halo. The lesions were expended and coalesced and the infected leaves became yellow leaf and later fall out. A causal fungal pathogen was isolated and the colony of the pathogen was light gray green to dark green on PDA. The pathogen produced mostly the single conidium but rarely long chain of 3 to 8 conidia. The conidia were dark brown in color, long ellipsoid or oval and 20-60
in size. Their septa were 4-8 transverse and 1-2 longitudinal or oblique. The pathogen was, therefore, identified as Alternaria tenuissima based on cultural and morphological characteristics. This is the first report on the leaf spot of kudzu caused by A. tenuissima in Korea.
Pathogenesity of Colletotrichum gloeosporioides from Other Hosts on Strawberry
Kim, Seung-Han ; Yoon, Jae-Tak ; Lee, Joon-Tak ;
Research in Plant Disease, volume 10, issue 2, 2004, Pages 130~134
DOI : 10.5423/RPD.2004.10.2.130
The pathogenesity of 25 isolates of Colletotrichum gloeosporioides from apple, 42 isolates from pepper, 5 isolates from jujube, 8 isolates from persimmon was evaluated to know transmission to strawberry from other infected plants. Followings are the results. Colony morphology and spore size on potato dextrose agar was similar. When each isolate was inoculated on leaf and petiole of strawberry, isolates from persimmon was the most pathogenic. Five isolates, one pathogenic isolate per each host, were evaluated in simulated field condition under natural rainfall for their natural infectivity. All isolates infected strawberry in field condition, so C. gloeosporioides from other hosts are potential inoculum source of strawberry anthracnose.
On Selection of Resistant Potato Cultivars to Common Scab(S. scabies)
Hong, Soon-Yeong ; Kang, Yong-Kil ; Hahm, Young-Il ;
Research in Plant Disease, volume 10, issue 2, 2004, Pages 135~137
DOI : 10.5423/RPD.2004.10.2.135
It was conducted to select the resistant potato cultivars to common scab, to replace the existing susceptible cv Dejima in Jeju island conditions both 1997 and 2001. Among cultivars, cvs Jemchip, Alpa, Atlantic and Jopung were more resistant than others in the field with both low and high incidence of the disease. Also among the existing cultivars grown in Korea, cvs Superior, Jopung and Chubaek were resistant, expecially in terms of production of marketable potatoes.
Effect of Soil and Tuber Disinfection on Potato Common Scab(S. scabies) in Jeju Field Conditions
Hong, Soon-Yeong ; Kang, Yong-Kil ; Hahm, Young-Il ;
Research in Plant Disease, volume 10, issue 2, 2004, Pages 138~141
DOI : 10.5423/RPD.2004.10.2.138
It was conducted to find out the effect of chemical treatment on seed tubers and soil to control potato common scab in Jeju Island in 2001. Although the treatment of soil disinfection with Dazomet Gr. (30kg/10a) was more effective comparing to the treatment of seed disinfection and the untreated, the control value was merely 40.5%. However, the combined treatment of soil and seed disinfection was considerably more effective to reduce the percentage of infection and infection area, and increase the production of marketable tubers and also increase the control value. Therefore, the combined treatments are demanded to reduce the scab incidence in Jeju field conditions.
Effect of Potassium Phosphonate on the Control of Potato Basal Stem Rot(Pythium myriotylum) in Hydroponics
Hong, Soon-Yeong ; Kang, Hyeong-Sik ; Kang, Yong-Kil ; Jee, Hyeong-Jin ;
Research in Plant Disease, volume 10, issue 2, 2004, Pages 142~144
DOI : 10.5423/RPD.2004.10.2.142
Effect of potassium phosphonate on control of potato basal stem rot caused by Pythium myriotylum in hydroponics system was evaluated at spring and fall cultivation in Jeju island in 2001. Potassium phosphonate 200 ppm treatment, which was directly supplemented into the nutrient solution, showed 90.5%, and 100 ppm treatment showed 50.5% control value in spring cultivation. Fall cultivation, potassium phosphonate 200 ppm treatment showed 100%, and 100 ppm treatment showed 69.9% control value. Potassium phosphonate 200 ppm treatment, basal stem rot of potato started to develop 10 days ofter inoculation into the hydroponics system showed 8.0% in infection rate. Potassium phosphonate 100 ppm treatment, after 5 days showed 10.0%, and after 10 days showed 20.0% infection rate, but the non-treated was after 5 days showed 56.7%, and after 10 days showed 96.9% infection rate.
Influence of ACLSV-infection on Fruit Quality of `Hongro` Apples
Kim, Hyun-Ran ; Kim, Jeong-Soo ; Hwang, Jeong-Hwan ; Lee, Sin-Ho ; Choi, Gug-Seon ; Choi, Yong-Mun ;
Research in Plant Disease, volume 10, issue 2, 2004, Pages 145~149
DOI : 10.5423/RPD.2004.10.2.145
`Hongro` is one of the most important apple cultivars whose growing area is increasing because of its good quality. Recently fruit shrinking symptom causing decrease of fruit size, juice, and quality, appears in some commercial `Hongro` orchards. The average frequency of occurrence of fruit shrinking symptom was 12 % of total trees investigated and Apple chlorotic leaf spot virus (ACLSV) was detected from all the trees showing fruit shrinking symptom by ELISA. A typical virus infection symptom of leaf epinasty and stem necrosis appeared on woody indicators, Spy227 and Virginia crab grafted with infected trees and all the grafted trees showed positive reaction to ACLSV antiserum by ELISA. It was proved that ACLSV can be easily transmitted by grafting. ACLSV was also isolated from the leaves of C. quinoa inoculated with sprouting leaf sap of infected trees. To prove that the fruit shrinking symptom was caused by ACLSV infection, ACLSV-infected scion was grafted on virus-free `Hongro/M9` and the fruit characteristics were investigated. Consequently the same symptoms of fruit size and juice decreasing were observed from the trees grafted with ACLSV-infected scion. Therefore, it is suggested that the fruit shrinking symptom is caused by ACLSV infection and `Hongro` can be classified as sensitive cultivar to ACLSV.
Sap Transmission Pattern of CGMMV and Effect of Disinfectant on Watermelon
Ko, Sug-Ju ; Lee, Yong-Hwan ; Cha, Kwang-Hong ; Lee, Tae-Seon ; Park, In-Jin ;
Research in Plant Disease, volume 10, issue 2, 2004, Pages 150~153
DOI : 10.5423/RPD.2004.10.2.150
This study was conducted to investigate the sap transmission pattern of CGMMV and to select the disinfectant of sap transmission on watermelon cultivation. Being investigated CGMMV occurrence change after transplanting two diseased plants among 47 plants on the watermelon house, disease spread rapidly from early growth stage of 4 % to late growth stage of 83 %. When the grafting knife and topping scissor was dipped onto the several disinfectants before grafting or topping, disease suppressed 87-95 % on whole milk, skim milk, tri-sodium phosphate, and sodium hypo-chloride solution. Disinfection effects of 88.2 % and 91.2 % on whole milk and skim milk were showed when the hand dipped on the disinfectants.
Detection of CGMMV from Commercial Cucumber Seed and Resistance Test of Cultivars
Ko, Sug-Ju ; Lee, Yong-Hwan ; Cha, Kwang-Hong ; Park, Jin-Woo ; Choi, Hyeong-Gug ;
Research in Plant Disease, volume 10, issue 2, 2004, Pages 154~158
DOI : 10.5423/RPD.2004.10.2.154
To analyze the relationship between CGMMV occurrence and seed contamination by cucumber cultivars, cucumber cultivars of CGMMV infected field and diseased degree were investigated in cucumber main cultivation regions of Jeonnam province from 1999 to 2002. While the diseased degree was different by years and cultivars, CGMMV occurred for 4 years in `Janghyeongnakhap`, for 3 years in `Jangjukcheongjang`, and for 2 years in `Gyeoulsali` and `Gyeoulnagi`. CGMMV was detected in seeds of `Janghyeongnakhap` and `Jangjukcheongjang` by ELISA test, and seed of `Jangjukcheongjang` showed positive reaction in bioassay. As a result of resistant test of 34 cultivars to CGMMV, all cultivars showed mosaic symptoms in pot test but only `Hanboksamcheok` showed mild mosaic symptom in field test.