Resistance of Cabbage Plants to Isolates of Plasmodiophora brassicae

Eun Ju Jo; Kyoung Soo Jang; Yong Ho Choi; Kyoung Gu Ahn; Gyung Ja Choi

doi:10.12972/kjhst.20160045

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2016 Vol.34, Issue 3 Preview Page Next Page

Resistance of Cabbage Plants to Isolates of Plasmodiophora brassicae 뿌리혹병균(Plasmodiophora brassicae)에 대한 양배추의 저항성

30 June 2016. pp. 442-452

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Abstract

Clubroot caused by Plasmodiophra brassicae Woron. is one of the most important diseases in Brassica crops worldwide. To investigate resistance of cabbage to disease caused by P. brassicae isolates, we evaluated development of clubroot on commercial clubroot resistant (CR) and non-CR cultivars, a CR line, and F3 lines from a cross between a CR line and a non-CR line using several isolates of P. brassicae. Four P. brassicae isolates (DJ, HN1, GN1, and YC) were used to measure development of clubroot on 16 non-CR cabbage cultivars that have been commercialized in Korea. Although four P. brassicae isolates induced similar disease severity on non-CR Chinese cabbage, these isolates exhibited different virulence on the cabbage cultivars. The YC isolate was the most virulent, followed by the GN1, HN1, and DJ isolates. Despite differences in virulence of the isolates on the cabbage cultivars, a CR cabbage line ‘YCR478’ and two CR cabbage cultivars showed high resistance to 12 P. brassicae isolates including DJ, HN1, GN1, and YC. When three isolates (YC, GN1, and DJ) were inoculated onto 107 F₃ lines that were derived from a cross between ‘YCR478’ and a susceptible cabbage line ‘C1176’, our results showed that 89, 33, and 6 of F₃ lines were susceptible to YC, GN1, and DJ isolates, respectively. In aspects of resistance, 6, 36, and 67 of F3 lines exhibited resistant responses to YC, GN1, and DJ isolates, respectively. Taken together, these results suggest that resistance of cabbage to clubroot is likely affected by the virulence of P. brassicae isolates.

Keywords

breeding

clubroot

crucifer crops

race

resistant cultivar

Plasmodiophora brassicae Woron.에 의한 뿌리혹병은 배추과 작물에 발생하여 전세계적으로 심각한 피해를 주고 있다. 본 연구에서는 뿌리혹병균에 대한 양배추의 저항성 특성을 조사하기 위하여, 일반 품종, 뿌리혹병 저항성(CR) 품종 및 CR 계통 그리고 저항성과 감수성 계통의 교배로부터 얻은 F3 계통에서 뿌리혹병균 균주들에 의한 뿌리혹병 발생 조사하였다. 국내 시판 중인 일반 양배추 16품종에서 뿌리혹병균 4균주(DJ, HN1, GN1 및 YC)에 의한 뿌리혹병 발생을 조사한 결과, 이들 뿌리혹병균들은 감수성 배추에서는 유사한 뿌리혹병 발생을 보였으나, 양배추 16품종에서는 균주에 따라 뿌리혹병 발생에 큰 차이가 있었다. 양배추에서 병원력이 가장 강한 균주는 YC 균주였고, 그 다음은 GN1, HN1, DJ 균주순이었다. 일반 양배추 품종에서 뿌리혹병 발생이 뿌리혹병균의 병원력에 따라 차이를 보이는 것과 달리, CR 양배추 계통인 ‘YCR478’과 CR 양배추 2품종은 YC, GN1, HN1 및 DJ 균주를 포함한 뿌리혹병균 12개 균주에 대하여 모두 고도의 저항성을 보였다. 한편, ‘YCR478’과 감수성 계통 ‘C1176’의 교배로부터 얻은 F₃ 107계통의 뿌리혹병균 3개 균주에 대한 저항성 차이를 조사한 결과, YC, GN1 및 DJ 균주에 대하여 감수성 반응을 나타내는 F₃ 계통은 각각 89, 33, 6개였다. 이와 반대로 이들 균주에 대하여 저항성을 보이는 계통은 각각 6, 36, 67개였다. 이상의 결과로 양배추의 뿌리혹병 저항성은 P. brassicae 균주들의 병원력 정도에 따라 영향을 받는 것으로 생각되었다.

키워드

육종

뿌리혹병

배추과 작물

레이스

저항성 품종

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Information

Publisher :KOREAN SOCIETY FOR HORTICULTURAL SCIENCE
Publisher(Ko) :한국원예학회
Journal Title :Horticultural Science and Technology
Journal Title(Ko) :원예과학기술지
Volume : 34
No :3
Pages :442-452
Received Date : 2015-11-20
Revised Date : 2016-02-16
Accepted Date : 2016-06-12
DOI :https://doi.org/10.12972/kjhst.20160045

Horticultural Science and Technology 원예과학기술지 ISSN:1226-8763(Print) 2465-8588(Online)

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