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Abstract
花房伸長方向の目安となるランナー軸を持たない組織培養苗を用いて, クラウンの傾斜と花房伸長方向の関係を調べた.頂花房の花芽分化時期に20から25度の傾斜を付けた培養苗は, 傾斜方向に花房を伸長させた.一方, 最初の傾斜処理から40日後の頂花房開花始期にポットの傾斜を180度回転させ傾斜方向を逆転させた場合, 頂花房は反対方向に伸長した.これは頂花房の伸長方向が屈地性によって決定されること, また花房の伸長方向が花芽分化時期より後, 開花始期よりも前の時期に決定していることを示すと考えられた.ランナー軸およびクラウン傾斜を持たない培養苗の定植に当たっては, 定植時に株を通路側に倒して定植することで, 花房を通路側に伸長させることが可能となると思われた.
The direction of flower cluster extension was investigated in micropropagated strawberry plants with no stolons. If micropropagated plants were planted at an angle of 20 to 25°, primary flower clusters developed in an inclined direction. However, primary flower clusters developed in the opposite direction if inclined pots were rotated by 180°, 40 days after the first inclination treatment. These results show that the direction of extension of primary flower clusters is determined geotropically during the period between flower bud differentiation and anthesis. Furthermore, it is likely that micropropagated plants will extend flower clusters to the aisle side if they are planted at an angle of 20 to 25° toward the aisle side.
Journal
- Horticultural research (Japan) [List of Volumes]
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Horticultural research (Japan) 4(2), 159-163, 2005-06-15 [Table of Contents]
The Japanese Society for Horticultural Science