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    Caryological study on four Hesperis L. (Cruciferae) taxa from the Diaplictos (Dvorak) Dvorak section in Turkey
    (WILEY-BLACKWELL, 2008) Unal, Fatma; Duran, Ahmet; Martin, Esra
    This study examined chromosome numbers and karyotypes of four taxa, Hesperis novakii Dvorak, H. bottae Fourn., H. balansae Fourn. and H. syriaca (DC.) Dvorak, from naturally growing Diaplictos (Dvorak) Dvorak section, which is represented by only these four taxa in Turkey, in the genus Hesperis. H. novakii and H. syriaca have 2n=14 chromosomes, H. bottae and H. balansae have 2n=12 chromosomes in somatic cells. Total chromosome lengths are 5.37 mu m and 2.17 mu m in H. novakii, 5.38 mu m and 2.70 mu m in H. bottae, 9.59 mu m and 4.28 mu m in H. balansae, 4.88 mu m and 2.32 mu m in H. syriaca (no. 4969), 7.89 mu m and 3.44 mu m in H. syriaca (no. 4971). The karyotypes are as follows: H. novakii consists of 3m+1sm+1st+2T, H. bottae consists of 4m+2st, H. balansae consists of 4m+2sm, H. syriaca (no. 4969) consists of 3m+1sm+1st+2T and H. syriaca (no. 4971) consists of 3m+1sm+1st+2T chromosome pairs. Results were discussed from a cytological and taxonomical point of view.
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    Karyological studies of five taxa of Sideritis L. (Lamiaceae) section Hesiodia Benth. from Turkey
    (UNIV FLORENCE BOTANY INST, 2008) Esra, Martin; Duman, Hayri; Unal, Fatma
    The number and size of the chromosomes in the Sideritis L. genus which belongs to Hesiodia (Benth.) section were studied using the Image Analysis System. Chromosome number was determinated as 2n=30+0-2B in S. lanata L., 2n=28+0-3B in S. romana L. subsp. romana, 2n=28+0-4B in S. curvidens Stapf., 2n=16+0-2B in S. montana L. subsp. montana and 2n=18+0-3B in S. montana L. subsp. remota (d'Urv.) P.W.Ball ex Heywood. The chromosome lengths in these taxa were found to vary from 0.37 mu m to 1.33 mu m.
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    Morphological, palynological, seed-coat surface and karyological studies of Hesperis bicuspidata and H. stellata (Cruciferae) from Turkey
    (WILEY, 2011) Duran, Ahmet; Unal, Fatma; Pinar, Nur Munevver; Cetin, Ozlem
    The taxonomic delimitation of Hesperis bicuspidata (Willd.) Poir. and H. stellata F. Dvorak is problematic, and we therefore studied morphological, palynological, seed-coat surface and karyological features of both species to determine their degree of similarity. The morphology was described using 13 characters, each based on ten measurements on different specimens. Hesperis stellata and H. bicuspidata both show large variation in vegetative and reproductive organs; petal length varies between 18 and 26 mm and petal width is 37 mm; the corolla is lilac, whitish lilac, violet, dark violet or white in color, and fruits of both species are generally glabrous or have very short bifurcate hairs. Pollen and seed morphology were examined by LM and SEM. Pollen of both species is prolate-spheroid or subprolate, tricolpate and reticulate. Their exine structures are the same. Hesperis bicuspidata is diploid (2n=14) but different chromosome types were present in the two studied specimens. Hesperis stellata is tetraploid (2n=28) showing the same chromosome types as the samples of H. bicuspidata. Eighteen morphometrical characters of H. bicuspidata, H. stellata, H. pisidica and H. armena were analysed by ANOVA. Notes on ecology and distribution are also presented for H. bicuspidata. Based on the results, H. stellata is reduced to a synonym of H. bicuspidata.
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    New chromosome counts in Hesperis L. (Brassicaceae) from Turkey
    (SPRINGER, 2007) Duran, A.; Martin, E.; Unal, Fatma
    [Abstract not Available]