Yazar "Mutlu B." seçeneğine göre listele

Listeleniyor 1 - 2 / 2
  • Küçük Resim Yok
    Öğe
    Assessment of phytotoxic and genotoxic effects of anatase TiO2 nanoparticles on maize cultivar by using RAPD analysis
    (Parlar Scientific Publications, 2018) Mutlu F.; Yurekli F.; Mutlu B.; Emre F.B.; Okusluk F.; Ozgul O.
    In this study, early phytotoxic and genotoxic effects of chemically synthesized nano-TiO2 (anatase) were investigated in seedlings of maize (Zea mays cv. Hido). Control (Hoagland) and NaCl (300 mM) groups were administered with nano-TiO2 (0.1%, 0.2% and 0.3%). Seed germination and seedling growth parameters of maize cultivar were markedly inhibited by salt stress. Nano-TiO2, without depending on concentration, was found to be ineffective on germination percentage in all administrations. On the contrary, nano-TiO2 caused significant increases in root-stem length and fresh-dry weights especially in NaCl+nano-TiO2 administrations. In salt administered samples, 0.3% nano-TiO2 increased root length 1.4 fold, stem length 4.8 fold, and fresh weight 1.2 fold. Genotoxic properties of nano-TiO2 in seedlings of maize were evaluated by using randomly amplified polymorphic DNA (RAPD-PCR). In RAPD analysis, 20 RAPD primers were found to produce unique polymorphic band profiles at different concentrations of nano-TiO2 maize seedlings. Genomic template stability (GTS), a qualitative measurement of changes in RAPD patterns of genomic DNA, decreased depending on increasing nano-TiO2, NaCl, and NaCl+nano-TiO2 concentrations. Therefore, it could be concluded that nano-TiO2 of appropriate dose can be used to ameliorate negative effects of salt stress by increasing growth potential of maize. © by PSP.
  • Küçük Resim Yok
    Öğe
    Saponaria bargyliana Gombault (Caryophyllaceae): A new record for Turkey and analysis of its morphological characters with related species
    (2006) Mutlu B.
    Previously, Saponaria bargliana Gombault was known only from its type locality, the north of Syria in the Nosaïris mountains, which was published by Gombault in 1962. During a field trip in June 2002 to Erzin (Hatay) district, the species was collected for the second time from a new locality far from its locus classicus. Thus, this species was described as a new record for the flora of Turkey. The description of this species was expanded and its geographical distribution, habitat, flowering time and conservation status are discussed. Quantitative and qualitative analysis of Saponaria bargyliana and closely related species is discussed. Eleven quantitative characters were used in a linear discriminant analysis. In the discriminant analysis, the most useful characters for separating particular species were selected: seed number, calyx nerve number, coronal scale length, calyx teeth length and petal width. With these 5 most important characters, 100% of plants were correctly classified into the designated groups. The analysis showed that S. bargyliana, S. officin alis L. and S. glutinosa M.Bieb. are distinguished by the quantitative morphological characters. Calyx hair arrangement and the condition of the pedicel hairs are the most important qualitative characters in the identification of these species. © TÜBİTAK.