뿌리혹병 및 시들음병에 대한 저항성 양배추와 브로콜리 유전자원 탐색 (Evaluation of Cabbage- and Broccoli-genetic Resources for Resistance to Clubroot and Fusarium Wilt)

서지정보

· 발행기관 : 한국식물병리학회
· 수록지 정보 : 식물병 연구 / 20권 / 4호 / 235 ~ 244페이지
· 저자명 : 이지현, 최경자, 조은주, 장경수, 최용호, 김진철

초록

Clubroot and Fusarium wilt of cole crops (Brassica oleracea L.) are destructive diseases which for many yearshas brought a decline in quality and large losses in yields all over the world. The breeding of resistant cultivarsis an effective approach to reduce the use of chemical fungicides and minimize crop losses. This study wasconducted to evaluate the resistance of 60 cabbage (B. oleracea var. capitata) and 6 broccoli (B. oleracea var.
italica) lines provided by The RDA-Genebank Information Center to clubroot and Fusarium wilt. To investigateresistance to clubroot, seedlings of the genetic resources were inoculated with Plasmodiophora brassicae bydrenching the roots with a mixed spore suspension (1 : 1) of two isolates. Of the tested genetic resources, fourcabbage lines were moderately resistant and ‘K166220’ represented the highest resistance to P. brassicae. Theothers were susceptible to clubroot. On the other hand, to select resistant plants to Fusarium wilt, the geneticresources were inoculated with Fusarium oxysporum f. sp. conglutinans by dipping the roots in spore suspensionof the fungus. Among them, 17 cabbage and 5 broccoli lines were resistant, 16 cabbage lines weremoderately resistant, and the others were susceptible to Fusarium wilt. Especially, three cabbage (‘IT227115’,‘K161791’, ‘K173350’) and two broccoli (‘IT227100’, ‘IT227099’) lines were highly resistant to the fungus. Wesuggest that the resistant genetic resources can be used as a basic material for resistant B. oleracea breedingsystem against clubroot and Fusarium wilt.

영어초록

Clubroot and Fusarium wilt of cole crops (Brassica oleracea L.) are destructive diseases which for many yearshas brought a decline in quality and large losses in yields all over the world. The breeding of resistant cultivarsis an effective approach to reduce the use of chemical fungicides and minimize crop losses. This study wasconducted to evaluate the resistance of 60 cabbage (B. oleracea var. capitata) and 6 broccoli (B. oleracea var.
italica) lines provided by The RDA-Genebank Information Center to clubroot and Fusarium wilt. To investigateresistance to clubroot, seedlings of the genetic resources were inoculated with Plasmodiophora brassicae bydrenching the roots with a mixed spore suspension (1 : 1) of two isolates. Of the tested genetic resources, fourcabbage lines were moderately resistant and ‘K166220’ represented the highest resistance to P. brassicae. Theothers were susceptible to clubroot. On the other hand, to select resistant plants to Fusarium wilt, the geneticresources were inoculated with Fusarium oxysporum f. sp. conglutinans by dipping the roots in spore suspensionof the fungus. Among them, 17 cabbage and 5 broccoli lines were resistant, 16 cabbage lines weremoderately resistant, and the others were susceptible to Fusarium wilt. Especially, three cabbage (‘IT227115’,‘K161791’, ‘K173350’) and two broccoli (‘IT227100’, ‘IT227099’) lines were highly resistant to the fungus. Wesuggest that the resistant genetic resources can be used as a basic material for resistant B. oleracea breedingsystem against clubroot and Fusarium wilt.

참고자료

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