Abstract:
The purpose of this experiment is to probe into the rooting ability in varieties of
Osmanthus fragrans and the effect of NAA treatment. The results of the experiment showed that there were statistically significant differences in their rooting ability(p<0.001). The cutting of
Semperflorens were most readily to root. The rooting ability of
Latifolius was inferior to that of
Semperflorens, while
Aurantiacus was somewhat difficult for rooting. Their significant differences of rooting can be found after two months of cutting. Within one growing season the cutting of
Semperflorens produced a well developed root system, as well as new shoots, while the cutting of
Latifolius could only form root system without new shoots. NAA treatment could greatly promote the rooting of Latifolius(p0.001) but have on notable effect on the readily rooting
Semperflorens(p>0.05). Although the rooting ability of
Aurantiacus whose rooting ability was rather weak was greatly improved by NAA treatment(p<0.05), the survival rate was extremely low(only 10%). Therefore while propagating
Semperflorens and
Latifolius, simple cutting is adaptable; but for the propagation of
Aurantiacus grafting is much more suitable.