Effect of osmotic water stress on germination of Lebanon Cedar (Cedrus libani A. Rich.) seeds from the provenances of Turkey

Dirik H. G.

ANNALS OF FOREST SCIENCE, cilt.57, sa.4, ss.361-367, 2000 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 57 Sayı: 4
  • Basım Tarihi: 2000
  • Dergi Adı: ANNALS OF FOREST SCIENCE
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.361-367
  • İstanbul Üniversitesi Adresli: Evet

Özet

Seeds from ten provenances of Cedrus libani were subjected to germination test on filter paper saturated with polyethylene glycol (PEG 6000) solutions made up to provide osmotic potentials of 0, -2, -4 and -6 bars. Mean germination percent for all provenances decreased about 48% in -2 bars, 61% in -4 bars and 75% in -6 bars treatments compared to control (0 bar) treatment. There were significant differences among the relative germination percent of the provenances in different treatments. In spite of climatic data, strong correlations were found between germination capabilities under different stress levels and the ecological conditions in the natural habitats of the provenances. Differences between the germination capabilities of the provenances under different stress conditions were interpreted as an intraspesific heritable variation constituted by natural selection.