الفهرس 
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Abstract
Our work was carried out to control the problems of
traditional propagation of jojoba where traditional procedures
using seeds and semi-hardwood cuttings resulted in several
difficulties. When the plantation is established by seeds, male
plants outnumber the females. In addition, shrubs obtained
from seeds showed a high variability in most traits including
yield because it is dioecious and obligate cross-pollinated plant
species. Since, seed germination decreased with time after seed
harvesting, seed germination under the influence of several
conditions was studied in this work. Vegetative propagation
can be established using semi-hardwood cuttings and growth
regulators. However, the maximum number of possible
obtained propagules was limited by plant size and time of year.
These factors were completely avoided when tissue culture
techniques were used where one nodal explant of elite shrub
could be used and multiply to obtains great numbers of
propagules at any time of the year.
The ability of jojoba seeds to germinate and grow in
sandy soil, at 30°C and under relatively low concentration of
NaCl, mannitol (2 – 3 g/ l), or lead acetate gave clear indication
about suitability of jojoba shrub to cultivate commercially in
large areas of desert lands in Egypt and Arab countries.
In this work, a tissue culture technique was used for
jojoba micropropagation and genetic improvement through.