TY - JOUR JF - nbr JO - NBR VL - 6 IS - 4 PY - 2020 Y1 - 2020/1/01 TI - The structural adaptations of Convolvulus persicus, an endangered plant in the northern coasts of Iran TT - سازگاری‌های ساختاری پیچک ایرانی، گونه در معرض خطر سواحل شمالی ایران N2 - The purpose of this research was to identify the structural adaptations in three populations of Convolvulus persicus L. on coastal areas in Mazandaran Province, whose populations of which are severely reducing due to the intense environmental stresses of the coastal zone. In general, annular collenchyma, isobilateral mesophyll, amphiphloic siphonostele, abundant presence of laticiferous tubes, numerous druse crystals and the presence of periderm in rhizome can be introduced as the most important morpho-anatomical strategies utilized against harsh environmental conditions. Sari population was foud to have the most various structural toleration mechanisms in comparison with Babolsar and Nour populations. Few differences were observed in anatomical characteristics in the three populations of Convolvulus persicus as the evidence for high intra-specific phenotypic variability, leading to local adaptation and increase of the tolerability of plants against environmental changes. SP - 495 EP - 504 AU - Asheqian, Faezeh AU - Kelij, Sedigheh AU - Jafari, Naser AD - University of Mazandaran KW - anatomy KW - Caspian coasts KW - environmental stresses KW - mechanical supporting tissue KW - psammophyte UR - http://nbr.khu.ac.ir/article-1-3142-en.html DO - 10.29252/nbr.6.4.495 ER -