Six Syrian landraces of Rosa damascena planted at the faculty of agriculture
of Damascus University have been evaluated in this study. A big variation of
yield was noticed among the landraces. The landrace called (Mesraba) was
superior to others c
oncerning yield which was (112.2 g/plant). On the other
hand, (Erna) had got the highest content of oil (0.071%). Analysis of oil
implemented in Suleyman Demirel University in Turkey (Isparta) identified the
main components of oil such as: Geraniol (28-31%), Citronellol (26-30%),
Nerol (12-14%), Germacrene-D (6-8%), Nonadecane (4-6%) and Linalool (1-
3%). Besides, many trace compounds were detected such as: Eicosane, Eugenol,
Citral, Hexadecane and Rose oxide. The essential oil of (Almarah) had got the
highest quality.
This study aimed to investigate Four levels of IBA concentration: (0
(control), 1000, 2000, 4000 ppm) and three kinds of rooting media: sand,
peatmoss, sand+sawdust in ratio of 1:1 in a factorial complete random design.
The results indicated that
the concentration of 2000 ppm was superior at
rooting percentage 76%, root number (20 roots) and root length 13 cm over the
other levels of concentration. Besides, the media of (Sand+Sawdust) was
superior at rooting percentage 72%, rooting number (19 roots), root length 11
cm, physical and chemical charactaristics and the charactaristics of the rooted
cuttings.
