Flower bud differentiation and flowering characteristics of Prunus salicina var.Fengtangli
[Objective]The present study aimed to provide key information for an in-depth exploration of the reasons behind the low yield of Prunus salicina var.Fengtangli by analyzing the process of flower bud differentiation and flowering in Fengtangli.[Method]A relatively high-yielding plum variety,Mili No.1,was selected as the control.The external characteristics and size of flower buds in Fengtangli and Mili No.1 were observed.The anatomical structure,deformities and the number of flower primordia were studied using the paraffin section method.The flowering process,flower quantity and the occurrence of abnormal flowers were also investigated.[Result]Both Fengtangli and Mili No.1 plums experienced undifferentiated,initial differentiation,sepal primordia differentiation,petal primordia differentiation,stamen primordia differentiation,and pistil primordia differentiation phases during flower bud differentiation.Although the initiation time of flower bud differ-entiation in Fengtangli was similar to Mili No.1,the peak period of differentiation in Fengtangli occurred relatively early,mainly concentrat-ed from mid-September to the end of October.Furthermore,Fengtangli exhibited a higher occurrence of abnormal flower buds during the peak period,with fewer flower primordia differentiated in each bud.During the flowering period,the flower quantity of Fengtangli was signif-icantly lower than that of other plum varieties,and a higher frequency of short pistils and double pistils in abnormal flowers was observed.Continued observation revealed that late-stage double pistil flowers could develop into deformed double fruits.[Conclusion]The peak period of flower bud differentiation and the occurrence of abnormal flower buds in Fengtangli are from mid-September to the end of October.Feng-tangli has a higher proportion of deformities in flower buds,and each flower bud differentiates fewer flower primordia.These factors contrib-ute to the higher occurrence of abnormal flowers and lower flower quantity during flowering,potentially explaining one of the reasons for the low yield of Fengtangli plum.
万方数据
维普
