TY - JOUR ID - 27174 TI - Seed dormancy-breaking and germination requirements of JO - Desert JA - JDESERT LA - en SN - 2008-0875 AU - Keshtkar, H.R. AU - Azarnivand, H. AU - Etemad, V. AU - Moosavi, S.S. AD - Author AD - 2 AD - 3 AD - 4 Y1 - 2008 PY - 2008 VL - 13 IS - 1 SP - 45 EP - 51 KW - chilling KW - dormancy KW - Ferula ovina KW - Ferula gummosa KW - GA3 KW - germination DO - 10.22059/jdesert.2008.27174 N2 - Dormancy breaking and germination requirements were investigated in seeds of Ferula ovina and Ferula gummosa. Seeds of rather species were collected from north and eastern-north rangelands of Iran. Seeds of each of the species were subjected to different treatments including various levels of GA3, chilling and combination of GA3 and chilling (GA-chilling). In contrast to treated seeds, non-treated seeds did not germinate. Germination of both species increased at higher concentration of GA3. In the case of Ferula ovina the highest germination percentage was obtained when the seeds were treated with 1000 ppm GA-chilling with 76% of germination. For Ferula gummosa seeds, the highest germination percentage was found when exposed to 1500 ppm GA-chilling with 53% germination. Both species well responded to different periods of cold stratification (30/60 days), especially F. ovina with 36% and 55% germination, respectively. The results suggest that F. gummosa has deeper dormancy. For both species, germination rate was positively correlated with germination percentage. Keywords: Chilling; Dormancy; Ferula ovina; Ferula gummosa; GA3; Germination UR - https://jdesert.ut.ac.ir/article_27174.html L1 - https://jdesert.ut.ac.ir/article_27174_7fd03e68053e2e8cd5f0b73774e59739.pdf ER -