POLLEN AND ACHENE MORPHOLOGY OF TARAXACUM F.H. WIGG. (ASTERACEAE) SPECIES DISTRIBUTED AROUND BURSA

Authors : Narmin ABDULLAYEVA, Gül KUŞAKSIZ

Pages : 85-100

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Publication Date : 2018-05-01

Article Type : Research Paper

Abstract :In this study, we extensively examined the pollen morphology and some important morphological characteristics of  Taraxacum  Wiggers insert ignore into journalissuearticles values(Asteraceae); species which have a wide distribution in and around Bursa. There are 7  Taraxacum  species distributed in Bursa and its vicinity, 2 of which are endemic. Taxons are  Taraxacum serotinum  insert ignore into journalissuearticles values(Waldst & Kit); Poiret,  Taraxacum hyberniforme van Soest,  Taraxacum minimum  Heldr. ex Nyman , Taraxacum aznavourii  van Soest,  Taraxacum buttleri  van Soest, Taraxacum pseudobrachyglossum van Soest and  Taraxacum turcicum  van Soest. According to the palynological studies,  T. turcicum  pollens are moderate monad, their pollen type is three-zonocolporate rarely tetra-zonocolporate, pollen shape is subprolate, prolate-spheroidal, oblat-spheroidal and exine ornamentation is defined as spinulate.  T. pseudobrachyglossum  pollens are medium sized monad, pollen type is three-zonocolporate, pollen shape is subprolate, prolate-spheroidal, oblat-spheroidal; exine ornamentation is spinulate; spine and spinule.  T. serotinum  pollens are medium sized monad, pollen type is three-zonocolporate rarely tetra-zonocolporate, pollen shape is prolate-spheroidal, oblat-spheroidal; exine ornamentation is spinulate; spine and spinule.  T. minimum  pollens are medium sized monad, pollen type is three-zonocolporate, pollen shape is suboblate, prolate-spheroidal, oblat-spheroidal; exine ornamentation is spinulate; spine and spinule.  T.hyberniforme  pollens are medium sized monad, pollen type is three-zonocolporate, pollen shape is prolate-spheroidal, oblat-spheroidal; exine ornamentation is spinulate; spine and spinule.  T. aznavourii  pollens are medium sized monad, pollen type is three-zonocolporate, pollen shape is prolate-spheroidal, oblat-spheroidal; exine ornamentation is spinulate; spine and spinule.  T.buttleri  pollens are medium sized monad, pollen type is three-zonocolporate, pollen shape is suboblate, prolate-spheroidal, oblat-spheroidal, subprolate; exine ornamentation is spinulate; spine and spinule.
Keywords : Asteraceae, Taraxacum, Pollen morphology, Achene morphology, Bursa, Turkey