49. ヤセウツボ (Orobanche minor Sm.) の宿主範囲とフルリドンによる埋土種子低減

概要

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In a field experiment, seed germination of the root parasitic weed Orobanche minor was induced when they were sown with seeds of sunflower, carrot, tomato, cotton, and red clover. Cotton seedlings induced higher germination but were not parasitized by O. minor. O. minor parasitized seedlings of the other crops and, in particular, a significant infection was observed on carrot. In infected carrot seedlings, root growth was severely stunted. Fluridone increased the rate of seed germination induced by the germination stimulant, strigol, and promoted conditioning process under a wide range of temperature. Soil-incorporated fluridone was effective in breaking dormancy of O. minor seeds and preventing them from entering into the secondary dormancy. Accordingly, fluridone decreased the number of viable parasite seeds in the soil.
植物化学調節学会の論文
2003-10-10