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首页> 外文期刊>Journal of environmental science and health >Potentiality Of Different Isolates Of Wilt Fungus Fusarium Oxysporum Collected From Rhizosphere Of Tomato Against Root-knot Nematode Meloidogyne Incognita
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Potentiality Of Different Isolates Of Wilt Fungus Fusarium Oxysporum Collected From Rhizosphere Of Tomato Against Root-knot Nematode Meloidogyne Incognita

机译：从番茄根际收集的枯萎真菌尖孢镰刀菌不同菌株对根结线虫根结线虫的识别潜力

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摘要

This investigation was undertaken to determine the effect of culture filtrates of different isolates of Fusarium oxysporum f. sp. lycopersici on mortality of Meloidogyne incognita juveniles and egg hatching. It was observed that different concentrations including standard extract (S.E), 1:10 and 1:100 dilutions of all fungal nitrates inhibited egg hatch when compared with control. Minimum mortality and maximum hatching was observed in BRT (showing least mortality) isolate of F. oxysporum, while maximum mortality and minimum egg hatching was recorded in BGT (showing maximum mortality) isolate. Larval mortality was decreased with a decrease in concentration and the least mortality was observed in 1:100 when compared with SE and 1:10. The potentiality of both the isolates (BRT and BGT) against root-knot nematode M. incognita was confirmed by the pathogenicity test on tomato. These observations confirmed that F. oxysporum isolates possesses variability in pathogenicity ranging from pathogenic to bio-control agent. The plants inoculated with BRT isolate failed to show wilt symptoms while plants inoculated with BGT isolate showed wilt indices.
机译：进行了这项研究，以确定尖孢镰刀菌f的不同菌株的培养滤液的影响。 sp。番荔枝对南方根结线虫幼虫死亡率和卵孵化的影响。观察到，与标准品相比，包括标准提取物（S.E），所有真菌硝酸盐的1:10和1：100稀释液在内的不同浓度均可抑制卵孵化。在B. oxysporum的分离株中观察到最低死亡率和最大孵化率，而在BGT分离株中显示出最高死亡率和最小卵孵化率。幼虫死亡率随浓度降低而降低，与SE和1:10相比，死亡率为1：100时最低。通过对番茄的致病性测试，证实了两种分离物（BRT和BGT）针对根结线虫的致病性。这些观察结果证实了尖孢镰刀菌分离物在致病性方面具有可变性，从致病性到生物控制剂。接种BRT分离株的植株未出现枯萎症状，而接种BGT分离株的植株却出现了枯萎指数。

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