Rindera cetineri Yıldırım (Boraginaceae) üzerinde anatomik, mikromorfolojik ve karyolojik araştırmalar

Abstract

In this study, the anatomical, micromorphological and karyological features of Rindera cetineri Yıldırım (Boraginaceae), an endemic species in Denizli, were investigated. In anatomical studies, cross sections for root and stem measurements, and cross and superficial sections for leaf measurements (base and stem leaf) were taken. The stomatal index was calculated by counting the stomata and epidermis cells on the upper and lower surfaces of the superficial sections taken from the leaves. In micromorphological studies, pollen type and surface ornamentation, seed shape, and surface ornamentation were determined. The pollen type of R. cetineri is 6-heterocolpate, the pollen shape is prolate-spheroidal, subprolate and the surface ornamentation is microgranulate. As a result of the karyological study, the somatic chromosome number of R. cetineri was determined as 2n=24.

"Anatomical Investigations on Endemic Rindera caespitosa (A. DC.) Bunge"

“…There are phloem cells under the parenchyma cells. The xylem is scattered in the pith region and the pith region has disappeared [8]. In our study, the features of the cortex layer in the cross section taken from the root and the fact that the core area is covered with xylem were found to be similar to this study.…”

“…In the stem, they observed collenchyma consisting of parenchymatic cells and 4-5 layered cortex under the epidermis, and phloem and xylem under the cortex. The pith consists of large and cylindrical parenchymatic cells [8]. In our study, there is no pith in the crosssection of the stem of the plant.…”

“…All species are perennial and linked to the dry and continental climate of the steppe and semidesertic belts [2]. Rindera is represented by 4 species in Turkey, with the addition of R. cetineri Yıldırım [3], the number of Rindera taxa in Turkey is Rindera cetineri species for the first time [8]. In the present paper we provide a brief survey of anatomical features of the Rindera and discuss some aspects that may contribute to a better insight in the difficult taxonomy in Rindera genus and will contribute for further investigation in the future.…”