Glazer I, Orion D
J Nematol. 1985 Jan;17(1):21-4.
Aqueous solutions of hydroxyurea (HU) in various concentrations were applied as soil drenches to Meloidogyne javanica-infected plants. At a concentration of 15 ppm, the chemical hampered giant cell formation and the number of females on the roots was 20% of that of the control but the growth of the host plants was not affected. Additional HU applications after the one at infection did not add to the inhibitory effect. HU exerted its effect on M. javanica-infected tomato in five soil types. Soil temperature of 32 C neutralized the HU-induced resistance in much the same way that high temperature breaks the natural resistance in M. incognita-resistant tomato. This study provides further evidence of the role of HU as an induced resistance agent.
将不同浓度的羟基脲（HU）水溶液作为土壤浇灌剂施用于感染爪哇根结线虫的植物。在浓度为15 ppm时，该化学物质阻碍了巨型细胞的形成，根部雌虫数量为对照的20%，但寄主植物的生长未受影响。在感染时施用HU后再额外施用HU，并未增强抑制效果。HU对感染爪哇根结线虫的番茄在五种土壤类型中均有作用。32℃的土壤温度以与高温打破抗南方根结线虫番茄的天然抗性大致相同的方式中和了HU诱导的抗性。本研究进一步证明了HU作为诱导抗性剂的作用。
