Transcriptome sequencing of  purple flower and yellow flower Chimonanthus praecox at different flowering stages (PRJCA021548)
Chimonanthus praecox is a traditional famous flower in China. It is widely used in bonsai cultivation, landscaping and cut flower production. It has high ornamental application value. In production, C. praecox varieties are identified by the color of the inner quilts, which are divided into plain  C. praecox  variety group, halo  C. praecox  variety group and red  C. praecox  variety group. In 2021, a purple flower wintersweet was found in the world wintersweet garden in Yanling, Henan Province. The color of the inner and outer integument was purple red, and the character was extremely unique. It was the first discovery of purple flower wintersweet. The petals of four flowering periods of  C. praecox flowers were collected, namely, the scale bud germination period, the petal exposure period, the initial opening period and the full opening period. At the same time, the petal samples of the same period of  C. praecox  varieties with similar flowering period and flower type were collected. Through the transcriptome sequencing analysis of the petals of  C. praecox  at different flowering periods, in order to find the key genes regulating the change of flower color of  C. praecox .