الفهرس 
seed and seedling propagationOnly 14 pages are availabe for public view
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Abstract
This study was fulfilled depending on shrubs planted in Ismailia region where the farm was used for research and production. It was used as a source of seeds as well as plant materials for vegetative and in vitro multiplications. Jojoba is propagated through seeds, seedlings, stem cutting and micropropagation. These four propagation procedures were subject of this study.
The Aims of This Work:
1. To study the effect of some factors on different propagation procedures of jojoba plant: seeds, seedlings, semi-hardwood cuttings and micropropagation
2. To detect variation between the studied shrubs, variations resulted from seed propagation, and select an elite individual for vegetative multiplication.
3. To establish of in vitro micropropagation protocol utilizing different types of explants.
4. To study the effect of partition of cotyledonary node segments on multiplication of jojoba.
5. To recommend the incorporation of relatively low concentration of NaCl to improve the in vitro multiplication of salt tolerant plant of jojoba.
6. To apply ISSR and RAPD markers to study the molecular events and genetic variations between the studied shrubs.
• Jojoba was planted in Ismailia region since it can grow and reproduce depending on the availability of low water content in the soil.
• In our study, the shrubs of studied farm were grown though seeds. All the shrubs were subjected to the same practices and environmental conditions.
• The effect of environmental conditions is not completely avoided; consequently the registered variation in the studied parameters is under genetic control as well as under environmental conditions.
• Since the studied shrubs obtained from seed propagation, differences in shrub habit as well as seed parameters could be detected.
• Shrubs obtained from seed sowing showed great variation in growth parameters (shrub height, stem contour anddiameter of vegetative growth), they were assumed to be relevant to yield.
• High variation in lateral branch parameters between the studied shrubs including number of nodes, distance between nodes, and number of leaves was registered.
• Variation in flower density was registered between the studied shrubs. In general, shrubs with high flower density expressed high yields.
• Variation in leaf parameters was detected between the studied jojoba shrubs; leaf area was in parallel with fresh and dry weight of the leaves as well as seed yield.
• A positive relationship between seed weight, seed volume and seed yield was strongly established.