摘要
以6个不同种(Trichoderma hamatum、T.virens、T.citrinoviride、T.longibrachiatum、T.afroharzianum和T.asperelloides)的30株木霉菌株为试材,采用室内平板拮抗、温室盆栽和田间接种生防木霉菌的方法,研究了不同木霉菌对辣椒疫病的防治效果。结果表明:木霉菌对辣椒疫霉菌菌丝生长具有较好的抑制效果,不同木霉菌株间抑制率差异显著(P<0.05),平板拮抗抑制率在60.00%以上的菌株占总数的70%;木霉菌株T10(T.hamatum)的防控效果显著高于其它木霉菌株,在温室接种辣椒疫霉菌30d后防控效果达到71.60%;在田间,木霉菌株T10对辣椒疫病的防治效果可达68.02%,与对照药剂烯酰吗啉的防治效果相当,且能够显著增加辣椒果实的产量,单株增产率达到14.30%,高于烯酰吗啉。
Taking 30 Trichoderma spp.isolates classified to 6species（Trichoderma hamatum,T.virens,T.citrinoviride,T.longibrachiatum,T.afroharzianumand T.asperelloides）as materials,the biocontrol effect of different Trichoderma spp.isolates were studied by the antagonistic tests in vitro,inoculation tests under greenhouse and in field.The results showed that the Trichoderma spp.was an effective biological control effect for P.capsici.and the difference were significant（P〈0.05）among different isolates.The Trichodermaspp.isolates number accounted for 70%for antagonistic efficacy above 60.00%in the mycelium of P.capsici in vitro antagonistic tests.Efficacy of T10 isolate against P.capsici reached 71.60% under greenhouse conditions when spraying spore suspension over P.capsici prior to inoculation of the pathogen.The biocontrol effect of isolates T10 against P.capsici was 68.02% and had not significant difference with dimethomorph at the 0.05 level in field.The results also showed that the T10 promoted dried chilli yield significantly,which was higher than dimethomorph treatment.
出处
《北方园艺》
CAS
北大核心
2016年第21期115-119,共5页
Northern Horticulture
基金
公益性行业(农业)科研专项资助项目(201303014)
四川省财政厅"蔬菜品种抗病性评价与病虫害绿色防控技术"资助项目(ysny-1)
国家产业体系四川省蔬菜产业体系资助项目(nycytx-31)
四川省科技支撑计划资助项目(2016NZ0032)
关键词
木霉菌
辣椒疫霉菌
生物防控
烯酰吗啉
增产率
Trichoderma spp.
Phytophthora capsici
biocontrol
dimethomorph
increased production rate
