中国农业科学 ›› 2022, Vol. 55 ›› Issue (4): 707-718.doi: 10.3864/j.issn.0578-1752.2022.04.007

• 植物保护 • 上一篇    下一篇

番茄颈腐根腐病抗性鉴定技术的建立及抗性种质资源筛选

王梦蕊1,2(),刘淑梅1(),侯丽霞1,王施慧1,吕宏君1,苏晓梅1()   

  1. 1山东省农业科学院蔬菜研究所/山东省设施蔬菜生物学重点实验室/国家蔬菜改良中心山东分中心/农业农村部黄淮地区蔬菜科学观测实验站(山东),济南 250100
    2中国农业大学园艺学院,北京 100193
  • 收稿日期:2021-07-23 接受日期:2021-08-28 出版日期:2022-02-16 发布日期:2022-02-23
  • 通讯作者: 苏晓梅
  • 作者简介:王梦蕊,E-mail: wangmr151@qq.com。|刘淑梅,E-mail: lsmei78@126.com
  • 基金资助:
    山东省自然科学基金(ZR2020QC152);国家现代农业产业技术体系建设专项(CARS-23-G13);山东省农业良种工程(2020LZGC005)

Development of Artificial Inoculation Methodology for Evaluation of Resistance to Fusarium Crown and Root Rot and Screening of Resistance Sources in Tomato

WANG MengRui1,2(),LIU ShuMei1(),HOU LiXia1,WANG ShiHui1,LÜ HongJun1,SU XiaoMei1()   

  1. 1Institute of Vegetables, Shandong Academy of Agricultural Sciences/Shandong Province Key Laboratory for Biology of Greenhouse Vegetables/Shandong Branch of National Improvement Center for Vegetables/Huanghuai Region Scientific Observation and Experimental Station of Vegetables (Shandong), Ministry of Agriculture and Rural Affairs, Ji’nan 250100
    2College of Horticulture, China Agricultural University, Beijing 100193
  • Received:2021-07-23 Accepted:2021-08-28 Online:2022-02-16 Published:2022-02-23
  • Contact: XiaoMei SU

摘要:

【目的】探索番茄颈腐根腐病(Fusarium crown and root rot,FCRR)苗期抗性鉴定技术,并对番茄种质资源及品种进行抗性鉴定分析,挖掘和丰富可利用的抗性资源,为培育抗颈腐根腐病番茄品种打下基础。【方法】以尖镰孢番茄颈腐根腐病专化型病原菌(Fusarium oxysporum f. sp. radicis-lycopersici,Forl)和感病栽培番茄Heinz 1706为材料,研究接种菌液浓度、接种寄主苗龄、接种后管理温度和不同接种方法对番茄颈腐根腐病人工接种鉴定效果的影响。随后通过苗期人工接种鉴定方法结合文献中已报道的与抗性基因连锁的分子标记,对100份番茄种质材料进行颈腐根腐病抗性鉴定分析。【结果】在一定范围内,番茄颈腐根腐病发病率及病情指数随着接种菌液浓度的升高而增大,接种菌液浓度为107个孢子/mL时,发病率及病情指数分别为100%和89.2,可以反映寄主真实的抗性水平;接种寄主苗龄为2—5叶期均能使植株发病,不同苗龄间病情指数无显著差异;接种后不同的管理温度对番茄颈腐根腐病的病情指数影响显著不同,其中较低的管理温度(20℃)有利于番茄颈腐根腐病的发生;使用浸根法和灌根法进行鉴定,番茄颈腐根腐病发病率和病情指数较高且效果稳定,显著优于茎注射法。对100份番茄种质材料进行分析,接种鉴定结果显示有38份材料表现抗病,这些材料可用于番茄抗颈腐根腐病育种或生产。在已报道的与Frl连锁的分子标记中,SCARFrl的准确率最低,仅为51%,C2-25的准确率为59%,而PNU-D4的准确率为83%,该标记可用于番茄抗颈腐根腐病辅助选择。【结论】建立的苗期抗性鉴定技术能客观反映供试材料的实际抗性水平,可用于番茄抗颈腐根腐病材料的鉴定筛选。

关键词: 番茄, 颈腐根腐病, 抗性鉴定, 分子标记

Abstract:

【Objective】The objective of this study is to explore the resistance identification technology of Fusarium crown and root rot (FCRR), carry out the resistance identification and analysis of tomato germplasm resources and varieties, enrich the available tomato resources resistant to FCRR, and to lay the foundation for the cultivation of tomato varieties that resistant to FCRR. 【Method】In the present study, four parameters that influence the inoculation effect including inoculum concentration, seedlings stage, environmental temperature and inoculation methods were studied using susceptible line Heinz 1706 infected with Fusarium oxysporum f. sp. radicis-lycopersici (Forl). Subsequently, 100 tomato materials were identified through artificial inoculation at seedling stage as well as the molecular markers linked to the resistance gene. 【Result】The disease incidence and disease index of FCRR increased in a certain range along with the increase of inoculum concentration, and the actual levels of plant resistance could be revealed with the inoculum of 107spores/mL, for which the disease incidence and disease index were 100% and 89.2, respectively. The disease index was not significantly different among different seedling ages when the host was inoculated at 2 to 5 leaf stage. The effects of different environmental temperatures after inoculation on the disease index of FCRR were significantly different and the lower temperature (20℃) condition was more favorable to the occurrence of FCRR. The incidence and disease index were higher and the effect was stable using root dipping and root irrigation methods, which were significantly better than stem injection. The result of inoculation identification suggested that 38 materials showed resistance to FCRR among 100 tomato materials, which could be used for breeding or production in tomato for FCRR resistance. In addition, among the reported markers linked to Frl, SCARFrl has the lowest accuracy of 51%, while C2-25 has the accuracy of 59% and the accuracy of PNU-D4 is 83%, which is expected to be used in marker-assisted selection (MAS) for FCRR resistance. 【Conclusion】The established assessment system can identify levels of the resistance to FCRR in tomato seedlings, which can be used for identification and screening of tomato materials.

Key words: tomato, Fusarium crown and root rot (FCRR), resistance identification, molecular marker