赤霉素处理对'福寿'报春苣苔生长开花的影响OA

In order to investigate the effects of gibberellin(GA3)at different concentrations on the growth and flowering of Primulina'Fushou',and to provide a reference for the application of chemical control technology in the commercial production of Primulina plants for plant type control and flowering regulation.The study took Primulina'Fushou'as the research object and used field experimental methods to investigate the effects of spraying gibberellin solutions at concentrations of 90,60,30,and 0 mg·L-1 on its growth and flowering characteristics.The results showed that spraying gibberellin GA3 could affect the growth and flowering characteristics of Primulina'Fushou'.Spraying a gibberellin solution at a concentration of 30 mg·L-1 advanced the flowering period by 2 days and extended the flowering duration by 9 days.The number of flowers per plant increased significantly in all treatment groups.Spraying a gibberellin solution at a concentration of 60 mg·L-1 significantly increased the number of inflorescences.Spraying gibberellin solutions at concentrations of 30 and 60 mg·L-1 significantly increased the height of the floral peduncle.The plant height of all treatment groups was significantly higher than that of the control group,and the leaf length and petiole length were significantly longer.Spraying gibberellin solutions within the selected concentration range had no significant effect on the maximum flower diameter,single flower duration,number of floral peduncles,leaf width,and plant crown width.In conclusion,gibberellin treatment can advance the flowering of Primulina'Fushou',increase the number of flowers,and extend the flowering period.The treatment with 30 mg·L-1 gibberellin had the best effect.At the same time,the plant leaves and petioles became longer,and the floral peduncle and plant height increased.