Effect of Gibberellin Application on Vegetative Propagation and Flowering in Saxifraga stolonifera Meerb.

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  • ジベレリンがユキノシタ（Ｓａｘｉｆｒａｇａ　ｓｔｏｌｏｎｉｆｅｒａ　Ｍｅｅｒｂ．）の栄養繁殖と開花に及ぼす影響
  • ジベレリン ガ ユキノシタ Saxifraga stolonifera Meerb ノ エイヨウ ハンショク ト カイカ ニ オヨボス エイキョウ

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Effect of gibberellin application on vegetative propagation and flowering was studied in Saxifraga stolonifera Meerb. Vegetative propagation was promoted by gibberellin spraying under open-field conditions. The number of runners increased by gibberellin sprays and lateral buds were grown by 50–200 mg·L−1 gibberellin in pot culture under room conditions. The leaf color after spraying with a high concentration of gibberellin was lighter than that with low concentrations or water. Flower stalk development and flowering were promoted by application of 50–200 mg·L−1 gibberellin sprays. The length of spikes was increased using 10–50 mg·L−1 gibberellin. In addition, when cuttings from the top of the runners were used after 50 mg·L−1 gibberellin treatment to the mother plants, differentiation of young plants was promoted by 50 mg·L−1 gibberellin in comparison with that after spraying water. The growth of young plants induced with gibberellins was, however, slower compared with that of controls. Results indicate that vegetative propagation and flowering are promoted in Saxifraga stolonifera M. by application of 50 mg·L−1 gibberellin.<br>

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