摘要
用太行花（Ｔａｉｈａｎｇｉａ ｒｕｐｅｓｔｒｉｓ Ｙ汃ｅｔＬｉ）试管花进行雌雄蕊发育的温度试验表明：１． 雄蕊和雌蕊的发育对温度的要求是不同的，雄蕊发育的最适温度范围偏低，接近于１～６ ℃，高于１８ ℃雄蕊全部败育。雌蕊发育的最适温度范围偏高，约６～２６ ℃，低于３ ℃，大部分雌蕊在分化早期停止发育。２． 由高温引起的雄蕊败育过程始于雄蕊原基时期，这个过程一旦启动，雄蕊败育将不会因重新将它转入低温而逆转。通过控制实验温度获得了单性雄花（１～３ ℃）、单性雌花（６～２６ ℃）和两性花（６～１２ ℃）。
Optimal environmental temperature for differentiation and development of stamen and pistil have been tested cultured in vitro flowers of Taihangia rupestris. The optimal temperatures for stamen development was quite different from that for pistil development. The most suitable temperature scope for stamen development was on the low verge of 1～6 ℃. Temperature over 18 ℃ led to abortion of all stamens. The temperature scope appropriate for pistil development was near to 6～26 ℃. That below 3 ℃ brought about cessation of most pistil development at early stage. The course of stamen abortion induced by high temperature started from the primordium stage in the stamen development and once this occurred it became irreversible despite of lowering the temperature. It is concluded that the temperature for unisexual male flower, unisexual female flowers and bisexual flowers development should be contralled at 1～3 ℃,6～26 ℃ and 6～12 ℃ respectively. The results of the present experiment may open up a new train of thoughts for studies on the control of sexual organ development and male sterility.
基金
国家自然科学基金
关键词
蔷薇科
太行花
性器官
发育
温度
Taihangia rupestris
Development of sexual organ
Effect of temperature
