초록

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Abstract ▼ AI-Helper

The autofluorescent cells in the penetration area of powdery mildewed leaves of barley had been reported. The present experiments were performed in order to obtain the fluorescence-inducing extract fraction from the conidia. The preparations were made by extractions and residue which were extracted ...

The autofluorescent cells in the penetration area of powdery mildewed leaves of barley had been reported. The present experiments were performed in order to obtain the fluorescence-inducing extract fraction from the conidia. The preparations were made by extractions and residue which were extracted from the conidia of Erysiphe graminis hordei race I with water, ethanol, and ethyl ether. Bioassaying was carried out on the culled-leaf surface of incompatible Turkey 290 and compatible Kobingataki varieties by placing the drops of extract solutions. Fluorescence-elicitor activity was shown only in tile ethanol-extract fraction to both varieties. However, fluorescence-eliciting rate was more rapid on the leaves of incompatible variety Turkey 290 than on tile those of compatible variety Kobingataki; Turkey 290 less than 8 hours, Kobingataki less than 16 hours.