Boron Determination and Pollen Morphology Studies on Endangered Endemic Scabiosa hololeuca Bornm. (Caprifoliaceae)

  • Murat ARDIÇ
  • Okan SEZER
Keywords: Scabiosa hololeuca Bornm. (Caprifoliaceae), Boron Amount, Pollen Morphology.


Deficiency and toxicity levels of boron is too close in plants which need to be trace amounts of boron for vital activities. B
requirements show great differences between the plants. Leaves and generative organs deposite the highest amount of B. In
contrast to this, root, fruit and seed deposite minimal amounts of B. Also pollen production level is directly related with the B
content of soil. Within this scope, boron determination and pollen morphology studies were performed on endemic Scabiosa
hololeuca in this study. B content of root, stem and flower were measured by curcimin methode for S. hololeuca. Pollen grain
microphotographs of examined taxon have been taken from preparates which were made by Wodehouse ve Erdtman
techniques. Examinations and measurements have been performed on these and morphometric results given. According to the
curcimin technique, B element as been measured 7,17 mg kg-1 dry weight (ppm.) in root, 8,48 mg kg-1 dry weight (ppm.) in
stem and 8,13 mg kg-1 dry weight (ppm.) in flower of studied taxon. Type of the pollen grain of studied taxon has determined
as tricolpatae according to the Wodehouse and Erdtman methodes. We believe that comparisons and evaluations of obtained
data from like these studies will make important contributions to plant taxonomy in future.