中国水稻科学(ChinJRiceSci),2023,37(5):470－477470http://www.ricesci.cnDOI:10.16819/j.1001-7216.2023.221105广谱抗稻瘟病水稻保持系赣香B的抗性遗传解析陈明亮1,2熊文涛1,2沈雨民1,2熊焕金1,2罗世友1,2吴小燕1,2胡兰香1,2肖叶青1,2,*[1江西省农业科学院水稻研究所,南昌330200；2水稻国家工程研究中心(南昌)/国家水稻改良中心南昌分中心，南昌330200；*通信联系人，email:xiaoyq1965@163.com]GeneticDissectionofBroadSpectrumResistanceoftheRiceMaintainerGanxiangBCHENMingliang1,2,XIONGWentao1,2,SHENYumin1,2,XIONGHuanjin1,2,LUOShiyou1,2,WUXiaoyan1,2,HULanxiang1,2,XIAOYeqing1,2,*[1RiceResearchInstitute,JiangxiAcademyofAgriculturalSciences,Nanchang330200,China;2RiceNationalEngineeringResearchCenter(Nanchang)/NanchangSub-center,NationalRiceImprovementCenter,Nanchang330200,China;*Correspondingauthor,email:xiaoyq1965@163.com]Abstract:【Objective】GanxiangBisaWAtypericemaintainerlinedevelopedbytheRiceResearchInstituteofJiangxiAcademyofAgriculturalSciences.ItshowsbroadspectrumresistanceagainstriceblastinJiangxi,Fujian,Guizhou,Hubei,andZhejiangProvinces.GeneticanalysisofblastresistancelociinGanxiangBwillcontributetothefutureworkforblastresistancebreeding.【Method】ThericeblastresistancelociinGanxiangBwereanalyzedbygenomecomparisonbetweenresistantandsusceptiblelines,markerdetectionofriceblastresistancelocus,resistancegenesequencing,andphenotypicidentificationofsegmentsubstitutionlines.【Results】TherewereresistancegenesPish,Pia,andPitainGanxiangB.AfterintrogressedwithPish,theblastresistanceofhighlysusceptiblelinewassignificantlyenhanced.However,afterintrogressedwithPitaorPia,theresistancewasslightlyenhancedorremainedunchanged.【Conclusion】GanxiangBcarriesseveralblastresistancegenes.Amongthem,Pishisthemainresistantgene,showingbroadresistancetoriceblast.Keywords:riceblast;resistance;geneticdissection摘要：【目的】赣香B是江西省农业科学院水稻研究所育成的水稻野败型保持系，在江西、福建、贵州、湖北和浙江等多地都表现较强的稻瘟病广谱抗性。对赣香B的稻瘟病抗性位点的遗传解析，有助于今后稻瘟病抗性育种工作。【方法...
