早咲き系および遅咲き系クサキョウチクトウ(Phlox paniculata)の花芽分化について

概要

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Flower bud differentiation and development were observed in the early and late flowering cultivars of Phlox paniculata. In the early flowering cultivar, flower bud differentiation started on the 9^<th> of May . Pistils and stamens were observed on that day. Petals were observed on the 16th. Ovules and pollen grains were observed on the 30^<th> of May. Flower opened on the 27th of June. It took 8 weeks from the beginning of flower bud differentiation to flowering. In the late flowering cultivar, flower bud differentiation started on the 6^<th> of June. It was four weeks later than the early flowering cultivar. Sepals were observed on the beginning day. Petals were observed on the 13^<th>. Pollen grains were observed on the 20^<th> of June. Flower opened on the 25^<th> of July. The term was also 8 weeks from the beginning to flowering. The flower opened 4 weeks later than the early flowering cultivar. The plant height of the early flowering cultivar was about 10cm taller than the late one at the flowering stage, but their heights were almost the same at the beginning of flower bud differentiation.
恵泉女学園大学の論文
2003-03-20