| 土壤理化因素对香蕉枯萎病菌生长和侵染的影响 |
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| 引用本文： | 黄永辉,陈琦光,迟远丽,杨媚,周而勋.土壤理化因素对香蕉枯萎病菌生长和侵染的影响[J].华中农业大学学报,2016,35(2):30-34. |
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| 作者姓名： | 黄永辉 陈琦光 迟远丽 杨媚 周而勋 |
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| 作者单位： | 1. 珠海出入境检验检疫局技术中心，珠海 519015; 华南农业大学农学院，广州 510642;2. 华南农业大学农学院,广州,510642;3. 珠海出入境检验检疫局技术中心,珠海,519015 |
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| 基金项目： | 国家现代农业（香蕉）产业技术体系建设专项（CARS-32） |
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| 摘 要： | 为探明土壤理化因素对香蕉枯萎病菌的影响,在实验室条件下,以尖镰孢古巴专化型4号生理小种(Fusarium oxysporum f.sp.cubense race 4,Foc 4)菌株为对象,模拟不同的土壤类型、温度、含水量和pH值等条件,观察和分析这些因子对Foc 4生长和侵染的影响。结果表明,Foc 4在土壤中生长的最适条件为:土壤温度25℃,含水量达到30%和偏酸性条件(pH 4~5);在盆栽试验中,Foc 4的最佳侵染条件为:温度30℃,偏酸性(pH 3~5)的土壤环境。
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| 关 键 词： | 香蕉枯萎病菌 土壤理化因素 菌丝生长 侵染 |
| 收稿时间： | 2015/3/10 0:00:00 |
Effects of soil physi-chemical factors on growth and infection of banana fusarium wilt pathogen Fusarium oxysporum f. sp. cubense |
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| Abstract: | In order to verify the effects of soil physi-chemical factors on the banana fusarium wilt pathogen (Fusarium oxysporum f.sp.cubense race 4,Foc 4),various soil physi-chemical factors inclu-ding soil types,temperature,water content and pH value were simulated under laboratory conditions,and the effects on the growth and infection of Foc 4 were observed and analyzed.The results showed that the optimal growth conditions for Foc 4 were at 25 ℃ with higher soil moisture of 30% and acidic pH value of 4 to 5 in soil;whereas the optimal infection conditions of Foc 4 to banana plantlets were at 30 ℃ and in the acidic soil environment (pH 3 to 5)in the pot experiments. |
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| Keywords: | Fusarium oxysporum f sp cubense soil physi-chemical factors mycelial growth infection |
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