STUDIES 	ON JOJOBA [Simmondsia chinensis (LINK) SCHNEIDER] 1- IBA-INDUCED ROOTING POTENTIALS.

El-Torky,, M. G.; Shahein, A. H.; EI-shennawy, Ola A.; EI-Fadly, Eman M.

doi:10.21608/jpp.2004.238954

STUDIES ON JOJOBA [Simmondsia chinensis (LINK) SCHNEIDER] 1- IBA-INDUCED ROOTING POTENTIALS.

Document Type : Original Article

Authors

¹ Department of Floriculture, Ornamental Horticulture and Garden Design, Faculty of Agriculture, Alexandria University, Egypt.

² Department of Pomology, Faculty of Agriculture, Alexandria University, Egypt.

10.21608/jpp.2004.238954

Abstract

Two types of cuttings were prepared from the current year's growth of jojoba
plants; terminal and sub-terminal. Bases of the cuttings were quickly dipped for 15
seconds in different IBA (indol-3-butyric acid) solutions; zero, 2000, 4000, 6000, 8000
and 10000 ppm. Data showed that all IBA concentrations increased the rooting
percentage of the treated jojoba cuttings except the 2000 ppm. The highest values of
rooting percentage were obtained when cuttings were treated with 8000 ppm. Rooting
percentage was found to increase steadily as IBA concentrations increased from zero
to 8000 ppm. Rooting percentage of the terminal cuttings of jojoba were significantly
higher than that of sub-terminal cuttings.
All IBA concentrations increased the average root length except the 2000
ppm. The maximum root lengths were obtained at 6000 ppm. in both seasons. Sub-
terminal cuttings were found superior to terminal ones although they were not
statistically different..
All ISA treatments increased the number of roots of the treated jojoba
cuttings. The number of roots per cutting increased steadily as ISA concentrations
increased from 4000 to 10000 ppm. The type of cutting have had no remarkable
effect on the number of roots produced.