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. DOI: 10.3969/j.issn.1000-2421.2016.02.005 |
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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: | 2015-03-10 |
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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