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长春花接种丛枝菌根真菌对柑橘黄龙病菌的抑制效果
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全达万李栋张金莲宋娟胡柳程通黄京华陈廷速
摘?要:通过筛选获得具有显著促生和抗病能力的AM真菌菌株,为防治柑橘黄龙病提供理论依据和基础,并探索防治新途径。采用盆栽法,于长春花幼苗期分别接种17株AM真菌进行长春花农艺性状和对柑橘黄龙病的抗病性比较试验,研究不同丛枝菌根真菌菌株对长春花的促生效果及对柑橘黄龙病的抑制效果。结果表明,长春花接种AM真菌后,菌株GZ10、GZ5和JX70能显著促进植株生长,其中接种GZ10的株高和茎径分别比CK增加了23.1%和12.1%,接种GZ5的叶片数比CK增加了12.9%;接种菌株GZ1、BNMJ和PWJ有效提高了长春花对柑橘黄龙病的抗病和耐病能力,其相对防效分別为78.39%、66.87%和69.75%。
关键词:长春花;丛枝菌根真菌;优势菌株;柑桔黄龙病;抗性
:S436.66???:A
EffectsofInhibitionCitrusHuanglongbingonCatharanthusroseuswithDifferentArbuscularMycorrhizalFungiSpecies
QUANDawan1,4,LIDong2,ZHANGJinlian3,4*,SONGJuan4,HULiu2,CHENGTong3,HUANGJinghua1*,CHENTingsu4
1.SchoolofAgronomy,GuangxiUniversity,Nanning,Guangxi530001,China;2.ZhejiangYangshengtangInstituteofNaturalMedicationCoopration,Hangzhou,Zhejiang310007,China;3.SchoolofPublicHealthCare,XiamenUniversity,Xiamen,Fujian361102,China;4.MicrobiologyInstitute,GuangxiAcademyofAgriculturalSciences,Nanning,Guangxi530007,China
Abstract:ToprovidefundamentalreferencesandbetterwaysofpreventingandcontrollingcitrusHuanglongbing(HLB),aresearchwasconductedtoobtainarbuscularmycorrhizal(AM)fungithatpossessplantgrowth-promotinganddiseaseresistanceabilities.Theexperimentutilizedthepotculturemethod,where17strainsofAMfungiwereinoculatedintotherootsofCatharanthusroseusthatwereintheseedlingstage.ThecolonizationofdifferentAMfungistrainswereanalyzedtounderstandhowAMfungisimulatingthegrowthandamelioratecitrusHLBinfectioninC.roseusundergreenhouseconditions.Duringthisprocess,variousmeasurementsweretaken,andtheagronomiccharacters,rateofcolonization,infectionintensity,arbuscularabundance,andHLBinfectionwereanalyzed.AfterC.roseusplantswereinoculatedwithAMstrains,strainsGZ10,GZ5,andJX70significantlyenhancedthegrowthofC.roseus.PlantsinoculatedwithGZ10exhibited23.1%and12.1%increaseinstem
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