当前位置: 首页 > 文章 > 我国三烟区烟草黑胫病菌对霜霉威的敏感性测定 山东农业大学学报(自然科学版) 2008,39 (2) 175-179
Position: Home > Articles > DETERMINATION ON SENSITIVITY TO PROPAMOCARB OF PHYTOPHTHORA NICOTIANAE VAR.NICOTIANAE IN CHINESE THREE TOBACCO ZONES Journal of Shandong Agricultural University(Natural Science Edition) 2008,39 (2) 175-179

我国三烟区烟草黑胫病菌对霜霉威的敏感性测定

作  者:
许学明;王开运;林才华;段海明;迟志娟
单  位:
山东农业大学植物保护学院
关键词:
烟草黑胫病菌;霜霉威;敏感性基线
摘  要:
从我国主要烟区云南、贵州和山东烟草病株上分离到38个烟草黑胫病菌Phytophthora nicotianaevar.nic-otianae菌株,采用菌落生长速率法测定了这些菌株对霜霉威的敏感性。结果表明:霜霉威对38个菌株的EC50值呈连续双峰(主峰明显)频次分布,分布在2493.3~19625μg/mL之间,均值为9688.7±1396.4μg/mL;在离体条件下,烟草黑胫病菌对霜霉威的敏感性高,未出现敏感性下降的抗药性亚群体。频次分析表明,霜霉威对组成连续双峰频次分布主峰的25个菌株的EC50均值为7136.1±929.93μg/mL,可作为烟草黑胫病菌对霜霉威的敏感性基线。
译  名:
DETERMINATION ON SENSITIVITY TO PROPAMOCARB OF PHYTOPHTHORA NICOTIANAE VAR.NICOTIANAE IN CHINESE THREE TOBACCO ZONES
作  者:
XU Xue-ming1,2 WANG Kai-yun1 LIN Cai-hua1 DUAN Hai-ming1 CHI Zhi-juan1(1.College of Plant Protection,Shandong Agricultural University,Tai'an 271018,China;2.Lianyungang Technical College,Lianyungang 222006,China)
关键词:
Phytophthora nicotianae var.nicotianae;propamocarb;baseline-sensitivity
摘  要:
The sensitivities to propamocarb of the 38 strains of Phytophthora nicotianae var.nicotianae collected from tobacco plants in Yunnan,Guizhou,Shandong,drovince of China were determined with the method of colonial growth-rate.The results showed that the frequency distribution of EC50 values to the 38 strains of propamocarb was bimodal with evident main peak and the EC50 values ranged from 2493.3 μg/mL to 19625 μg/mL and the mean EC50 value(±Se×t0.05) was 9688.7±1396.4 μg/mL;there was high sensitivity in vitro to propamocarb in Phytophthora nicotianae var.nicotianae and no resistant subcolony had been discovered.The results of frequency-analysis on sensitivity showed that the mean EC50 value(±Se×t0.05) of propamocarb to the 25 strains,which composed the main peak of above continuous bimodal distribution-sensitivity,was 7136.1±929.93 μg/mL,which could be used as the baseline-sensitivity to propamocarb of Phytophthora nicotianae var.nicotianae.

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