Abstract
The effect of hydrogen peroxide (H2O2) on the breaking of endodormancy was studied by using flower buds of Japanese pear (Pyrus pyrifolia Nakai ‘Kosui’) in the latter stage of endodormancy. Applications of 0.25, 1.0, 2.5, and 10% H2O2 promoted budbreak in flower buds; the most effective concentration was 2.5% applied in late November and 10% in early December. No phytotoxicity with H2O2 was observed in any treatment concentration or time. These results indicate that H2O2 is an effective compound for breaking endodormancy in flower buds of the Japanese pear.
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