烯效唑对姜荷花的矮化效果及组织解剖研究

为改变姜荷花主要切花品种清迈粉存在的花茎细长、易倒伏等缺点，使之适合盆栽化需求，并对其矮化过程中的组织结构进行解剖分析。以烯效唑处理姜荷花植株后，株高、花茎长明显变短，而茎粗以及花茎粗仅有轻微的增加，效果并不显著；此外，150 mg·L-1烯效唑处理对分蘖数有明显的增加作用。对其进行组织解剖分析可知，花茎的变短变粗与花茎细胞纵向长度变短、横向长度变大有关，对叶片表皮细胞分析可知，烯效唑处理可以使得姜荷花叶片的上下表皮细胞都变小，而气孔数增多，同时上表皮的气孔变小，而下表皮气孔变大。

Dwarfing effect of uniconazole on Curcuma alismatifolia and its tissue anatomy

The aim of this study was to change the shortcomings that the scape was too slender and prone to lodging， so as to meet the pot culture requirement and explore dwarfing mechanism of uniconazole on Curcuma alismatifolia cv. Chiang Mai Pink according to tissue anatomy. After being treated with different concentrations of uniconazole， the plant height and scape length decreased obviously， whereas diameters of both stem and scape increased a little. Moreover， 150 mg·L-1 uniconazole treatment could increase number of tillers obviously. By analyzing tissues structure of scape， the behavior that scape became short and thick was related to that the scape cells shortened in lengthways and largend in widthways. Based on microscopic observation of leaf epidermal cell， both upper and lower epidermal cell size decreased， and number of stomata increased in the treatment of uniconazole. Moreover， the upper epidermal stomata decreased， whereas lower epidermal stomata increased in the treatment of uniconazole.