Temperature and gene expression analysis of the percentage of ray floret and disk floret in chrysanthemum

研究了温度和基因表达对线状小花和盘状小花数量和百分率的影响。夏-秋花型菊‘岩野-白菊’的盘状小花百分率在高温条件下升高，秋花型菊‘金巴’和小花型菊‘夏子’的盘状小花百分率在低温条件下降低。分离出温度条件下表达的特异片段和与盘状小花形成有关的花发育阶段。研究了这些片段的序列和同源性。

Effects of temperature and gene expression related to the number and percentage of ray floret and disk floret were investigated. The percentage of disk floret was increased by high temperature in summer-to-autumn flowering type chrysanthemum,'Iwa-no-hakusen', and decreased by low temperature in autumn flowering type chrysanthemum,'Jinba' and small flowering type chrysanthemum,'Natsuko'. Specific fragments expressed under the temperature condition and the flower development stage related to the formation of disk floret were isolated. The sequence and the homology search of these fragments were investigated.