Total phenolics variation in leaves of some Hieracium L. and Pilosella Hill. species

Ayaz F. A., Coskuncelebi K.

ACTA BIOLOGICA CRACOVIENSIA SERIES BOTANICA, vol.44, pp.175-179, 2002 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 44
  • Publication Date: 2002
  • Journal Name: ACTA BIOLOGICA CRACOVIENSIA SERIES BOTANICA
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.175-179
  • Karadeniz Technical University Affiliated: Yes

Abstract

Mature leaves of 20 Hieracium L. and 11 Pilosella Hill. species collected from the alpine and subalpine regions of northeast Anatolia (Turkey) were examined for total phenolic content. The highest level was found in leaves of H. conicum (22.5 mg phenol equiv/g dry wt) and the lowest H. cardiophyllum (3.7 mg phenol equiv/g dry wt). Total phenolics content varied significantly (p = 0.05) among species of Hieracium and in decreasing order as follows: H. conicum (22.5) > H. hypoglaucum (21.5) > H. amblylepis (18.1) > H. subsilvularum (17.2) > H. jurassicum (15.1) > H. tamderense (14.8) > H. mannagettae (14.7) > H. cardiophyllum (3.7). In Pilosella the level ranged between 5.6 and 25.5 mg phenol equiv/g dry wt, with the lowest in P. grossheimii and the highest in P. hypeuryum. Total phenolics content varied significantly (p = 0.05) among species of Pilosella, in decreasing order: P.. hypeuryum (22.5) > P. tephrocephala (17.9) > P. officinarum (15.7) > P. macranthum (13.7) > P. fennica (10.5) > P. macrotricha (7.7) > P. grosheimii (5.6). Within genera, 40% of the Hieracium species and similar to64% of the Pilosella species significantly differed in total phenolics content, while similar to19.4% of the species significantly differed between genera. The range of differences in total phenolics content in the genera was not wide, clearly due to their taxonomically close relationships between species.