SUN Zheng-xiang,WANG Feng,ZHANG Hao,et al.Colonization Ability and Effect on Ginger Bacterial Wilt of Endophyte SZ-1[J].Northern Horticulture,2013,37(01):134-137.
内生菌SZ-1的定殖力及其对姜瘟病的防效
- Title:
- Colonization Ability and Effect on Ginger Bacterial Wilt of Endophyte SZ-1
- 文章编号:
- 1001-0009（2013）01-0134-04
- Keywords:
- ginger bacterial wilt; endophyte; colonization ability; control effect
- 分类号:
- S476.1
- 文献标志码:
- A
- 摘要:
- 从无病的生姜块根中分离筛选出1株对姜瘟病菌（Ralstonia solanacearum）有较强抑制作用的内生菌SZ-1；通过利福平标记研究其在生姜根际的定殖动态；测定了菌株SZ-1发酵液对姜瘟病的防治效果。结果表明：菌株SZ-1对番茄青枯病菌（Pesudmonas solanacearum Smith）、魔芋软腐病菌（Erwinia carotovora var.carotovora）及水稻白叶枯病菌（Xanthomonas oryzae pv.oryzae）等6种病原菌均表现不同程度的抑制作用。菌株SZ-1在生姜根际数量呈先上升后下降趋势，接种50 d后从根际回收的数量为4.6×105 cfu/g。灌根接种30 d后，姜瘟病的发病率为23.47%，病情指数为12.56，而对照发病率为89.63%，病情指数为31.52，相对防治效果为60.15%。
- Abstract:
- Endophyte SZ-1 which had a strong inhibition on Ralstonia solanacearum was screened from disease-free root ginger；colonization dynamics of SZ-1 marked with Rifampicin on the rhizosphere of ginger was investigated；control effect of SZ-1 fermentation broth on ginger bacterial wilt was illustrated.The results showed strain SZ-1 had inhibitation on six pathogen including Pesudmonas solanacearum Smith，Erwinia carotovora var.carotovora，Xanthomonas oryzae pv.Oryzae etc.in varying degree.The amount of SZ-1 on the rhizosphere of ginger went up first and droped later，which remained 4.6×105 cfu/g fifty days after inoculation.The incidence of ginger bacterial wilt was 23.47% and the disease index was 12.56 thirty days after inoculation，while they were respectively 89.63% and 31.52 in the control.The relative control effect was 60.15%.
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备注/Memo
第一作者简介：孙正祥（1980-），男，博士，讲师，现主要从事植物病害生物防治研究工作。E-mail:sunzhengxiang9904@126.com.