Anatomical and morphological variability in Siberian species of the sections Multicaulia and Subacaulia of the genus Hedysarum (Fabaceae)

  • Nina A. Karnaukhova Central Siberian Botanical Garden, SB RAS Email: karnaukhova-nina@rambler.ru
  • Inessa Yu. Seluytina Central Siberian Botanical Garden, SB RAS Email: selyutina.inessa@mail.ru
  • Olga V. Dorogina Central Siberian Botanical Garden, SB RAS Email: olga-dorogina@yandex.ru
DOI_disc_logo https://doi.org/10.14258/turczaninowia.23.3.14
Keywords: Fabaceae, Hedysarum, idioblast, leaf anatomy, mesomorphic and xeromorphic characters, Multicaulia, palisade mesophyll, Southern Siberia, stomata, Subacaulia

Abstract

The anatomical structure of the leaf blade of 6 Hedysarum species of the sections Multicaulia (H. chaiyr-akanicum Kurbatsky, H. gmelinii Ledeb., H. minussinense B. Fedtsch., H. sangilense Krasnob. et Timosch., H. setigerum Turcz. ex Fisch. et C. A. Mey., H. turczaninovii Peschkova) and Subacaulia (H. zundukii Peschkova) was studied under various growing conditions in Southern Siberia. The structural and quantitative changes in the leaf anatomical structure during the adaptation of plants to different conditions of water supply have been analyzed. Qualitative changes were expressed in the transition from the typically dorsi-ventral to the isolateral-palisade and isopalisade structure of the mesophyll. The gradual enhancement of xeromophic features in leaf structure also leads to a decrease in the leaf size and to the increase in the leaf blade thickness. This increases the number of palisade mesophyll layers and the number of stomata, the length of the palisade cells, the thickness of the epidermis, the size of the idioblasts. All these changes are considered as important biological adaptations of Hedysarum species of the sections Multicaulia and Subacaulia to the different growth conditions in Southern Siberia. 

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Published
2020-10-01
How to Cite
Karnaukhova N. A., Seluytina I. Y., Dorogina O. V. Anatomical and morphological variability in Siberian species of the sections Multicaulia and Subacaulia of the genus Hedysarum (Fabaceae) // Turczaninowia, 2020. Vol. 23, № 3. P. 147-157 DOI: 10.14258/turczaninowia.23.3.14. URL: http://turczaninowia.asu.ru/article/view/8570.
Issue
Vol 23 No 3 (2020): Turczaninowia
Section
Science articles

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