ADVENTITIOUS STAMINATE FLOWER FORMATION IN GIBBERELLIN TREATED GYNECIOUS CUCUMBER PLANTS
ADVENTITIOUS STAMINATE FLOWER FORMATION IN GIBBERELLIN TREATED GYNECIOUS CUCUMBER PLANTS
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DOI：
10.1093/oxfordjournals.pcp.a075540
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发表时间：
1977-01-01
影响因子：
4.9
通讯作者：
HALEVY, AH
中科院分区：
文献类型：
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作者：
FUCHS, E;ATSMON, D;HALEVY, AH
单用赤霉素（A4+7）处理诱导遗传雌性黄瓜（Cucumis sativus L.）主茎多个连续节位出现雄花芽。雄花芽出现在雌花芽旁边，雌花芽有不同程度的退化。重复GA处理诱导雄花的外观，否则严格雌雄同体的植物，旁边的两性花。然而，两性芽，不像雌蕊的，没有显示出任何有害的影响GA处理。因此，可以推断，人工诱导的雄花芽并不是通过雌性或两性芽的性逆转而发育的，而是代表了在正常生长的雌性或两性植物中从不发育的不定芽。因此，似乎预先确定的雌花或两性芽不会变成雄花芽，而相反方向的变化在过去被证明（至少对于雌花全株的）。GA处理在雌株植物中的有效性在受影响区域内以及沿主茎沿着均表现出向顶梯度。放射自显影的组织学检查表明，诱导雄花芽的发育过程没有不同于正常发育的芽。
Single gibberellin (A4+7) treatments induced the appearance of staminate floral buds in several consecutive nodes on the main stem of genetically female cucumber (Cucumis sativus L.). The staminate buds appeared next to pistillate buds which showed various degrees of degeneration. Repeated GA treatments induced the appearance of staminate flowers in otherwise strictly hermaphrodite plants, next to bisexual flowers. However, the bisexual buds, unlike the pistillate ones, did not show any deleterious effects of the GA treatment. Therefore, it is inferred that the hormonally induced staminate buds did not develop by sexual reversion of would-be pistillate or bisexual buds, but rather, represent adventitious buds which, in normally grown female or hermaphrodite plants, never develop. It thus seems that predetermined pistillate or bisexual buds do not change into staminate ones, while change in the reverse direction was demonstrated in the past (at least for the gynoecious ones). The effectiveness of the GA treatment in the gynoecious plants showed an acropetal gradient both within the affected region, as well as along the main stem. Autoradiographic histological examinations showed that the course of development of the induced staminate floral bud did not differ from that of normally developing buds.