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Pollen dimorphism in some distylous species of the genus Linum (Linaceae)



Pollen dimorphism in some distylous species of the genus Linum (Linaceae)



Botanicheskii Zhurnal 74(1): 65-72



Pollen grain morphology was studied in 29 heterostylous Linum species with the aid of light and scanning electron microscopy. Pollen dimorphism was observed in 26 species, with differences in the pollen from short-styled and long-styled forms being mainly in shape, size and exine sculpturing. The lack of pollen dimorphism in L. nervosum, L. olgae and L. heterosepalum indicated that pollen dimorphism was not related to heterostyly but probably was related to sexual incompatibility.

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