Study on the Phenological Period and Flower Organs Characteristics of 6 Prunus Avium Linn Cultivars(Strains)
6 Prunus avium Linn cultivars(strains)were used in this experiment.The phenological period and floral structure of 6 Prunus avium Linn cultivars(strains)were observed,while the pollen quantity was determined by u-sing a hemocytometer.The results showed that the phenological period of Prunus avium Linn was as follows:8～10 d from flower bud expansion stage to initial flowering stage,1～3 d from initial flowering stage to peak flow-ering stage,6～9 d from peak flowering stage to the end of peak flowering stage,2～4 d from peak flowering stage to the end of peak flowering stage.The phenological period would vary depending on the cultivation envi-ronment.The Prunus avium Linn cultivars(strains)'Qizao','Mashhad','Santina','Poland No.8','Poland No.9'and'5-S4'all exhibit simple flower,round white petals,consisting of 5 petals,5 calyx lobes,1 pistil,and a range of 26～37 stamens.The upper surface of the petals displays a slight concave shape with distinct separation between blooming petals,while the inflorescence type is umbel-shaped.Notably,there is an absence of an inflorescence ax-is and the sepals are recurved;only minor variations exist in terms of calyx tube morphology and the length ratio between calyx tube and sepal.The inflorescence exhibited variations in the number of flowers,the quantity of sta-mens per individual flower,the diameter of the corolla,and the size of petals among different varieties.Addition-ally,a range of 3～5 flowers per inflorescence was observed in the tested cultivars(strains).The single drug pol-len quantity of Prunus avium Linn cultivars(strains)in this study was classified into six groups,providing a valu-able reference for tree pollination management in production.'Qizao','Mashhad',and'Poland No.8'belong to the category with the highest pollen quantity,while'Santina','Poland No.9',and'5-S4'fall into the category with a rel-atively higher pollen quantity.The 3 cultivars(strains),namely'Qizao','Polan No.8',and'5-S4',have exhibited ex-ceptional performance in this region and can be regarded as the primary cultivars for greenhouse cultivation in Xinjiang.This study has provided a theoretical basis for the selection and allocation of Prunus avium Linn culti-vars in Xinjiang.
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