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首页> 外文期刊>The Kasetsart Journal >Efficacy of Thai Herbal Extract for Growth Inhibition of Xanthomonas axonopodis pv. citri, the Bacterial Canker of Citrus
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Efficacy of Thai Herbal Extract for Growth Inhibition of Xanthomonas axonopodis pv. citri, the Bacterial Canker of Citrus

机译：泰国草药提取物对黄单胞菌生长抑制的功效。柑橘，柑橘细菌性溃疡病

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摘要

The efficacy test of Thai herbal extract for growth inhibition of Xanthomonas axonopodis pv. citri, the causal agent of bacterial canker of citrus, was studied. The experiment was conducted by Paper disc diffusion method on double layer NGA. The 23 kinds of Thai herbal extracted by 95% ethyl alcohal at the concentration of 100,000 ppm were tested. Five kinds of those could inhibit the growth of bacteria on culture media and showed the typical inhibition zone. Those were guava leaf, beleric myrobalan fruit, pomegranate fruit peel, nut gall fruit and myrobalan wood fruit. But the other 18 kinds showed no inhibition zone. The 5 kinds of extract that showed high efficacy were diluted to 5 concentration lavels of 100,000, 50,000, 10,000, 5,000, and 1,000 ppm and tested by paper disc diffusion method again. It was founded that the guava leaf extract could inhibit the growth of bacteria at 50,000 ppm, the myrobalan wood fruit extract could inhibit the growth of bacteria at 10,000 ppm, the extract of beleric myrobalan fruit, nut gall fruit and pomegranate fruit peel could inhibit the growth of bacteria at all concentration levels started at 1,000 ppm.
机译：泰国草药提取物对轴生黄单胞菌PV抑制生长的功效测试。研究了柑橘细菌性溃疡病的病因-柠檬。实验通过纸片扩散法在双层NGA上进行。测试了95％乙醇浓度为100,000 ppm的23种泰国草药提取物。其中五种可以抑制细菌在培养基上的生长，并表现出典型的抑制区。那些是番石榴叶，贝类的rob果，石榴果皮，坚果gall果和my果。但是其他18种没有抑制区域。将表现出高功效的5种提取物稀释到5个浓度分别为100,000、50,000、10,000、5,000和1,000 ppm的桶中，并再次通过纸盘扩散法进行测试。结果表明，番石榴叶提取物在50,000 ppm时能抑制细菌的生长，木瓜果实提取物在10,000 ppm时能抑制细菌的生长，芥蓝，坚果gall果和石榴果皮的提取物可以抑制细菌的生长。在所有浓度水平下，细菌的生长都始于1,000 ppm。

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