山区马铃薯品种抗晚疫病特性的时空演变

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中图分类号：S532 文献标志码：A 文章编号：1673-2871（2025）09-098-06

Spatio-temporal evolution of late blight resistance of potato variety in mountainous areas

XIAO Chunfang'，WANG Zhen'， ZENG Yuting²，XU Juanni²， SHEN Yanfen'，GAO Jianhua' （1.SouthernPotatoResearchCenterfChina/EnshiTujiaandMiaoAutonomousPrefectureAcademyofAgriculturalSciences，Enshi 445000HubeiChina；2.IsituteofVegetableSiencesXizangAcademyofAgriculturalandAnimalHusbandrySienca ，Xizang，China）

Abstract： Potato cultivation has a significantcomparative advantage in the economic development of mountainous areas inChina.However，lateblightcausedbyPhytophthorainfestansseverelyrestrictsthedevelopmentofpotatoindustrialization.ToclarifythediseaseresistanceofmajorpotatovarietiesinEnshiregion，resistanceidentificationandstabilityevaluation wereconducted overtwo years andthree locations in field disease nurseries.Theresistance levels of10 potato varieties tolate blight was determined：FavoritaandXisenNo.6werehighlysusceptible，ZhongshuNo.5wassusceptible， MiraandE-malingshu No.12 were moderatelysusceptible，E-malingshuNo.1 was moderatelyresistant， Qingshu No.9 andE-malingshuNo.5wereresistant，whileE-malingshuNo.13andE-malingshuNo.14 werehighlyresistant.The severityof disease incidence showedahighlysignificant negativecorelation with yield.Among thevarieties，E-malingshuNo.13hadtheadvantagesof highresistancestabilitystrongenvironmental adaptabilityandhigh yield index. Meanwhile，potatolateblightcriteriawereusedtoidentifythehost，andthedominantPhytophthorainfestansspeciesin different areasofEnshi was selected asracel，3，4，6，7，8，10.Theresearchresults provideafoundation forpromotingpotato variety applicationand late blight control in this region.

KeyWords：Potato variety; Late blight;Resistance evaluation; Spatio-temporal evolution

马铃薯在保障世界粮食安全、促进乡村振兴、调整种植业结构和农业产业转型升级中起着至关重要的作用，而由致病疫霉[Phytophthorainfestans（Mont.）deBary]引起的晚疫病是马铃薯生产中最具毁灭性的病害，严重制约了马铃薯产业发展[1-2]。（剩余8429字）