Phenological genetic variation and selection of sprouting-leaf unfolding stage of Cerasus campanulata clones
In order to classify the phenology of sprouting-leaf unfolding stage of Fujian cherry(Cerasus campanulata)clones,41 grafted clones were observed for 2 years in Beishan Village,Mangdang Town,Yanping District,Nanping City,Fujian Province.The results showed that there were significant differences in phenology among clones during sprouting-leaf unfolding stage.The repeatability of leaf bud ex-pansion stage,leaf bud opening stage,leaf expansion stage and leaf flourishing stage were 0.732,0.899,0.954 and 0.958,respectively.Ac-cording to the systematic clustering of clones at the leaf expansion stage and leaf flourishing stage,41 clones can be divided into three types:early type,middle type and late type.The average time from the leaf expansion stage to leaf expansion stage was 11 days.Taking the first flowering and then leaf type as the pre-condition and the peak flowering stage as the target character,one clone was selected from the early,middle and late leaf spreading types as the early,middle and late flowering clones.
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