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品种感病性
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  “品种感病性”译为未确定词的双语例句
     The Forecast of Rice Stripe Disease with Varietal Susceptibility
     根据品种感病性预测水稻条纹叶枯病的发生程度
短句来源
     The Occurence of Pummelo Dwarf in Different Pummelo Cultivars in Guilin Guangxi
     柚矮化病的品种感病性调查
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  相似匹配句对
     The Occurence of Pummelo Dwarf in Different Pummelo Cultivars in Guilin Guangxi
     柚矮化病的品种感病性调查
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     There were differences of resistance of susceptibility among sorghum varieties.
     不同高粱品种感病性有明显差异。
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     The Contradiction between Varieties and Production Rate
     品种批量杂谈
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     A Comparative Test of Lotus Cultivars
     荷花品种比较试验
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  varietal susceptibility
Varietal susceptibility of certain field crops were tested.
      
Varietal susceptibility of potatoes to fusarium wilt
      
Varietal susceptibility of potatoes to internal black spot
      
Varietal susceptibility to internal brown spot of potatoes
      
It consists chiefly of a standard procedure of tuber wounding and exposure to inoculum adaptable to estimations of soil infestation or varietal susceptibility.
      
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In naturally inducing identification of resistance in barley to the barley yellow mosaic virus(BYMV)during 1979~1984 for 9~16 times, 3822 domestic and imported varieties of barley had been tested in the seriously infected fields of 8 counties. Among them 12 varieties such as the Yuqian six-rowed darley and the Sheng county beardless six-rowed did not show any symptom in field, and no any virus particle was discovered by electron microscope.These resistant varieties may serve as resistant donors,and two of them...

In naturally inducing identification of resistance in barley to the barley yellow mosaic virus(BYMV)during 1979~1984 for 9~16 times, 3822 domestic and imported varieties of barley had been tested in the seriously infected fields of 8 counties. Among them 12 varieties such as the Yuqian six-rowed darley and the Sheng county beardless six-rowed did not show any symptom in field, and no any virus particle was discovered by electron microscope.These resistant varieties may serve as resistant donors,and two of them have been used in breeding varieties for resistance. The relative rank of the resistance of the tested varieties to BYMV are as follows:the two-rowed barley the weakest,the four-rowed weaker, the six-rowed more strong,and the beardless six-rowed type the strong- est.There is no highly resistant variety found among two-rowed barley. The pathogenicity of infected soil from Shanghai is much stronger than that from Zhejiang.It suggests that different strains of BYMV may exist. There were no significant difference in incidence of the same variety during past years.Ths initial periods of BYMV incidence are not related to the growth durations,but coincide with the susceptibilities of the barley varieties.

1979~1984年在萧山县和上海县等8个县重病田,经9~16点次,自然诱发鉴定了国内、外大麦品种(系)3822个,其中于潜六棱大麦和嵊县无芒六棱等12个品种均不发病,用电镜检查也未见到病毒质粒,这些品种可作为抗源,其中有2个品种已用于抗病育种。大麦品种抗性以二棱最弱,四棱中等,六棱较强,无芒六棱类型品种的抗性最强。至今在二棱大麦中还未找到高抗品种。上海病土的致病性远比浙江病土强,认为黄花叶病毒可能存在不同株系。同品种年间抗病程度差异不大,即年度间抗性较稳定。发病始期与大麦品种的生育期早、迟无关,而与品种感病性有关。

It was demonstrated In the study that the appearance of Pale Yellow of Bacterial Leaf Blight of Rice was closely related with the pathogenicity of Xanthomonas campestris PV oryzae and the sensitivity of the Rice species coefficient of correlation come up to remarkably high.Pale Yellow was easily to occur when the sensitive rice species was infected by the virulent bacte ria strain (such as groups Ⅳ and Ⅴ). However, It did not occur when the sensitive ricespecies was infected by the median or weak virulent bacteria...

It was demonstrated In the study that the appearance of Pale Yellow of Bacterial Leaf Blight of Rice was closely related with the pathogenicity of Xanthomonas campestris PV oryzae and the sensitivity of the Rice species coefficient of correlation come up to remarkably high.Pale Yellow was easily to occur when the sensitive rice species was infected by the virulent bacte ria strain (such as groups Ⅳ and Ⅴ). However, It did not occur when the sensitive ricespecies was infected by the median or weak virulent bacteria strain (such as groups ⅢⅡⅠ) and when the disease-resistant rice species was infected by the virulent bacteria strains as well.

本试验初步明确水稻白叶枯病黄叶型症状的发生与病原菌的致病力以及水稻品种的感病性有密切的关系。相关系数均达到极显著水准。凡致病力强的菌株(Ⅳ、Ⅴ群)侵染感病的品种,一般都容易发生黄叶型症状,而致病力中和弱的菌株(Ⅲ、Ⅱ、Ⅰ群)浸染感病的品种,或致病力强的菌株浸染抗病的品种,都不会发生黄叶型症状。

Canker disease, Dothiorella gregaria, is common on walnut. When injured slightly, the growth is retarded and the numbers of fruits are reduced; while injured severely, the trees will die. In the northern regions of Huai River , the disease appears in early April and becomes severe form late May to mid June.The occurrence of the disease indicates that it is closely related to temperature, relative humidity and rain fall. The disease begins to occur in 11.4 to 15.3℃. The optimal temperature for disease development...

Canker disease, Dothiorella gregaria, is common on walnut. When injured slightly, the growth is retarded and the numbers of fruits are reduced; while injured severely, the trees will die. In the northern regions of Huai River , the disease appears in early April and becomes severe form late May to mid June.The occurrence of the disease indicates that it is closely related to temperature, relative humidity and rain fall. The disease begins to occur in 11.4 to 15.3℃. The optimal temperature for disease development is approximately 28℃. If the temperature is over 30℃, it does not cause any disease. The incubation period varies with temperature, about 1 to 2 months from 15 to 28℃. Expermental results showed that the difference in disease resistance of varieties was notable.Almost complete prevention of this disease can be achieved by application of integrated control including the use of silvicultural measures, such as deep ploughing, manuring, rational pruning, etc. Experiments showed an effective control by apPlYing 3 to 5 Be lime sulphur or 1 to 2% copper sulphate to the trunks.

溃疡病(Dothiorella gregaria Sacc.)是核桃树干上的一种常见病害,严重发生时,不仅削弱树势,影响产量,而且导致树体早衰。淮北地区核桃溃疡病从4月中旬开始发生,5月下旬至6月中旬为发病盛期,7—8月基本停止蔓延。病害的发生发展与温度、湿度和降雨的关系密切,其中温度尤为重要。当气温为11.4—15.3℃时,病害开始发生;气温升至28℃左右,病害发展达最高峰,30℃以上,病害基本停止。又潜育期在15—28℃范围内约需时1—2个月,其长短与外界温度的高低呈负相关。不同品种的感病性亦有差异,淮北当地绵核桃的感病程度一般均重于新疆核桃;植株生长不良时,极易感病。采取深翻、施肥、开沟沥水、合理修剪以及药剂涂治等综合防治措施,不仅减少病害发生,而且林木生势也显著转好。药剂涂治以波美3—5度石硫合剂、1—2%硫酸铜液和10%碱水的疗效较好,且前二种能使染病组织较早地恢复常态。

 
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