brown blight

Studies on the Biological Specialization of the Toxin Producing by Brown Spot Needle Blight Fungus

松针褐斑病菌毒素的专化性研究

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This paper was aiming at tea brown blight, one of the three most serious tea tree disease, for an in-depth study.

本文针对茶树三大病害之一的云纹叶枯病进行了深入的研究。

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Tea brown blight ( Guignardia camelliae) is one of several main leaf diseases of tea plant, having been more serious in some areas in recent years.

茶云纹叶枯病是茶树叶部主要病害之一，近些年来在局部地区发生比较严重，针对这种病害我们进行了相关研究。

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A preliminary study on the yield-loss and multiple-species economic threshold of Brown Planthopper and sheath blight on the hybrid rice& shan you 63

杂交稻汕优63褐稻虱、纹枯病复合为害损失及经济阈值的初步研究

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The resistance of tea germplasm resources to tea brown blight was evaluated by field investigation, nursery inoculation and detached shoot inoculation.

茶树种质资源抗茶云纹叶枯病鉴定，进行了田间自然发病调查、苗圃茶苗和室内离体茶枝人为接种试验。

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Significant difference of the ratio of affected needles among families was found and excellent effect of the resistant breeding against brown spot needle blight was achieved.

结果表明，针叶感病率性状在各家系间呈极显著差异，抗病选育具有良好的效果。

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Based on the completion of identification of resistance to brown planthopper and bacterial blight in indica rice restorer lines, the genetic control and mechanism of the resistance in several restorer lines and their combining ability of yield characters were studied.

本文在对籼稻恢复系褐飞虱及白叶枯病抗性鉴定的基础上，对若干恢复系的褐飞虱抗性遗传及机理，对白叶枯病抗性遗传以及农艺性状配合力作了初步研究。

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