Micromorphology of Sorbus intermedia Pers. nectary surface in different phases of blooming

Micromorphology of Sorbus intermedia Pers. nectary surface in different phases of blooming

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The structure of floral nectary surface of Sorbus intermedia in different phases of flower development was examined using scanning electron new belial model microscopy.Nectaries in S.intermedia flowers represent a receptacle type.The sculpture of cuticule on nectary epidermis and overlaying cells was described.The differences in the size of striaes on the outer cell wall of epidermis during the flower development were stated.

Nectarostomata were situated in small hollows.In the buds, they were closed and not fully developed.During pollen release phase, the outer ledges of the guard cells were better developed than powell and mahoney bloody mary mix at the beginning of blooming.Depressions on nectary epidermis cell walls were observed in the final phase of blooming.