九州大学大学院農学研究院植物資源科学部門農業植物科学講座園芸学研究室
Laboratory of Horticultural Science, Division of Agricultural Botany, Department of Plant Resources, Faculty of Agriculture, Kyushu University
九州大学大学院農学研究院植物資源科学部門農業植物科学講座園芸学研究室
Laboratory of Horticultural Science, Division of Agricultural Botany, Department of Plant Resources, Faculty of Agriculture, Kyushu University
Effects of reduced irradiance on growth and flowering of amaryllis (Hippeastrum x hybridurn cv. Apple Blossom) were examined. Low irradiance delayed flowering and reduced flowering rate, whereas the leaves were long. Measurement of fresh and dry weight of the flowers and scape, leaves, bulb and roots and their distribution to each organ suggested that the dry matter accumulation in the bulb is suppressed by low irradiance, subsequently it causes the abortion of flower buds or inhibition of flower bud development inside the bulb.
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