福建山樱花无性系花期物候划分及遗传变异

Phenological Classification and Genetic Variation ofFlowering Period in Clones of Cerasus campanulata

为划分福建山樱花无系性花期物候,在福建省南平市延平区茫荡镇北山村对42个福建山樱花嫁接无性系进行为期2 a的花期观测。结果表明,无性系间花期物候差异极显著,花芽膨大期、花芽开放期、花蕾出现期、始花期、盛花期和末花期的重复力分别为0.8799、0.8800、0.8386、0.8961、0.8923和0.8679。依据始花期、盛花期、末花期对无性系进行系统聚类分析,42个无性系可分为早花型、中花型、晚花型3类,无性系花期平均时长17 d。以盛花期为目标性状,分别从早花型、中花型和晚花型中各筛选1个无性系,分别为fy49、zx3、fy56,可作为构建长花期福建山樱花观花景观的无性系。

This study aimed to classify the flowering period in Fujian cherry(Cerasus fujikawei).Over a span of two years,the flowering phe nology of 42 gr afting clones was observed in Beishan Village,Mangdang Town,Yanping District,Nanping City,Fujian Province.The results revealed significant variations in t he flowering phenology among the clones,with repeatability coefficients of 0.8799,0.8800,0.8386,0.8961,0.8923 and 0.8679 for the bud swelling stage,bud opening stage,bud appearance stage,initial flowering stage,peak floweri ng stage,and end flowering stage,respectively.The 42 clones were categorized into three types based on their flowering time:early-flowering,mid-flowerin g,and late-flowering,with an average duration of 17 days for the flowering pe riod across different clones.To create a landscape for viewing Fujian cherry du ring the peak flowering stage,one clone was selected from each type(early,mid,and late).