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丁鱥不同群体ITS1区序列分析 被引量:6
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作者 凌去非 李思发 +1 位作者 张海军 蔡晓琴 《水利渔业》 北大核心 2006年第6期24-25,共2页
新疆朱家湖、73水库丁鱥群体和引进的捷克丁鱥群体在保守区18SDNA有单核酸多态,多态位点比例分别为0.42%、0.42%和1.69%,在ITS1区的多态位点比例分别为2.80%、2.10%和3.15%。捷克丁鱥群体与我国2个丁鱥地方群体在遗传背景上有一定的差异。
关键词 丁鱥 地方群体 捷克群体 ITS1区 序列分析
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Incidence and Development of Powdery Mildew (Blumeria graminis f.sp. tritici) in the Czech Republic in the Years 1999-2010 and Race Spectrum of This Population 被引量:1
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作者 Lubomir Vechet 《Journal of Life Sciences》 2012年第7期786-793,共8页
Powdery mildew (Blumeria graminis f.sp. tritici) is one of the most important leaf diseases of wheat on the worldwide. Evolutionary potential of a pathogen population is reflected in its population genetic structure... Powdery mildew (Blumeria graminis f.sp. tritici) is one of the most important leaf diseases of wheat on the worldwide. Evolutionary potential of a pathogen population is reflected in its population genetic structure. Severity of powdery mildew in twelve years of small-plot experiments was in individual years different. Incidence of powdery mildew was followed in 1999-2010 and powdery mildew development was studied in 2003 and 2004 in the Crop Research Institute (CRI). These experiments were made on the cultivar Kanzler, susceptible cultivar to powdery mildew. Disease severity was made as a percentage of typical symptoms of the disease. Structure of powdery mildew population was probed in 2009 and 2010 in CRI and in the locality Humpolec. The highest was in 2004 and the lowest in 2003. Development of the disease in two extreme years depended on progress of weather factors mainly to average daily temperature and photosynthetic active radiation. In the year 2009 was higher disease severity in CRI than in the CRI station in Humpolec but in 2010 vice versa higher disease severity was in Humpolec. Observation showed that in small distances of two localities can be differences in composition of powdery mildew population. Higher virulence in CRI was to the gene of specific resistance Pml whereas in Humpolec to the gene Pm 17. In the year 2010 in CRI was the highest virulence to the gene Pm 1 whereas in Humpolec the highest virulence was to the genes Pm3fand Pm4a. Differences of powdery mildew were in 12 years of observation were very distinct and showed difference in structure of powdery mildew population in near localities. 展开更多
关键词 Powdery mildew INCIDENCE DEVELOPMENT VIRULENCE race spectrum.
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