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  • Author or Editor: Andrew R. Force x
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Dark storage of Chinese hibiscus (Hibiscus rosa-sinensis L. cv. Brilliant Red) for 5 days to simulate shipping promoted flower bud abscission. Less developed flower buds (<30 mm) were more susceptible than developed buds to dark-storage-induced abscission. Removal of mature buds (>30 mm) before dark storage reduced subsequent abscission of younger, less developed buds. Plants grown under low irradiance conditions (500 µmol·s–1·m–2 PPF) abscised more flower buds in response to dark storage than those grown in high irradiance (980 µmol·s–1·m–2 PPF). These results indicate factors that decrease the availability and partitioning of photosynthates to immature flower buds increase the incidence of abscission.

Open Access