수박 덩굴쪼김병 및 뿌리혹선충 저항성 자원 선발 및 특성평가

• 영문명: Evaluation and Selection of Watermelon Germplasm for the Breeding of Fusarium Wilt and Root-Knot Nematode Resistant Rootstock
• 발행기관: 한국육종학회
• 저자명: 김상규 이관욱 김태복 정효봉 양은영 김승유 문지혜 장윤아 이옥진
• 간행물 정보: 『한국육종학회지』Vol.54 No.3, 184~194쪽, 전체 11쪽
• 주제분류: 농수해양 > 기타농수해양
• 파일형태: PDF
• 발행일자: 2022.09.01

영문 초록

Watermelons are grafted to prevent soil-borne diseases such as Fusarium wilt (FW) and increase their resistance to abiotic stress. Root-knot nematodes (RKN) are a contributing factor to economic loss in several cucurbits, including watermelon. Growing resistance varietiesis an effective way to reduce the damage caused by soil-borne diseases. Resistance evaluation was performed on 50 watermelon lines to selectrootstocks resistant to FW and RKN. Fusarium oxysporum f. sp. niveum race 2 was inoculated into 10-day-old seedlings using a root dippingmethod, and resistance was evaluated for four weeks. The 37-day-old watermelon seedlings were inoculated with Meloidogyne incognita andevaluated 60 days later. Three lines (IT199860, PI296341-6, and PI532811) were resistant to FW race 2, while one line (PI494527) was moderatelyresistant. Three lines (PI296341-5, PI457916-2, and PI457916-5) were RKN resistant. The PI296341-6 line was selected for its resistance toFW and moderate resistance to RKN. These findings imply that the identified resistant lines can be used in rootstock breeding programsagainst FW and/or RKN.

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키워드

Fusarium wilt disease resistance root-knot nematode rootstock watermelon