Document Details
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Document Type |
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Article In Conference |
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Document Title |
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Selection and Evaluation of Some Jojoba Clones for Commercial Plantation in Saudi Arabia انتخاب وتقييم بعض سلالات الهوهوبا للاستزراع التجاري بالمملكة العربية السعودية |
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Subject |
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engineering and applied sciences |
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Document Language |
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Arabic |
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Abstract |
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The present study was undertaken to identify high
yielding mother plants (clones) from jojoba fields established in Hail,
Medinah AI-Munawwarah and Hada AI- Sham area under a previous
grant (AT-13-23). The selected plants are to be evaluated, asexucdly
propogated, and utilized in clone, drought stress and salinity stress
trails.
The main achievements up to this stage of the project are as
fol1ows:Construction of a an automatic fog-mist control house (lOOOm2
)
I
for execution of asexual propogation (cuttings and grafting)
trails. Selection of one hundred potentially high yielding mother plants
from Hail, Medinah AI-Munawwarah and Hada AI-Sham areas for the
execution of the evaluation trails planned in the course of this project.
Among these, ten -top yielders- were selected at each location and were
assessed for plant height, crown diameter, length of reproductive branch,
tree volume, seed yield, oil content and inter related trails. Additional
data were taken on flowering mode and fruit set during the year.
1. Variuos perliminary rooting trails were conducted in order to
define approporiate means for rooting jojoba cuttings and to. obtain
high estimates of rooted cuttings and grafted seedlings.
The studies revealed that jojoba yields under optimum conditions
- as in Hail- ranged from 6.55 to 3.25 Kg of seed per tree, whereas oil
content of the seed at both Hail and AI-Medinah AI-Munawwarah
averaged over 50%. The studies also revealed that fruit set in jojoba is
dependent on lower temperamre ranges and duration as it started very
. early· in Hail in the north, relatively late in AI-Medinah AIMunawwarah
and very late in Makkah AI-Mukarranah area (Hada AISham).
On the other hand, bud and flower production was continuous,
at all locations, its intensity, however, relatively increased with rise in
temperature as observed in Makkah AI-Mukarranah area.
Rooting trails, on the other hand, showed that rooting of jojoba
cuttings is not an easy target as it mostly takes place during the cool
part of the year; and under specific measures that ensures the exact
water or humidity requirements for the cuttings. Based on this, a
rel~tively high rooting percent reaching 92%, in some cases, were
.recorded when the cuttings were placed in the mist house or under
special plastic incubators using perlite as a sailor rooting media. |
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Conference Name |
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the second annual meeting for scientific research |
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Duration |
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From : 27 محرم AH - To : 28 محرم AH
From : 30 مارس AD - To : 31 مارس AD |
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Publishing Year |
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1424 AH
2003 AD |
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Number Of Pages |
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11 |
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Article Type |
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Article |
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Added Date |
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Tuesday, January 13, 2009 |
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Researchers
| حسين الجزولي عثمان | Osman, N/A N/A | Investigator | | |
| عطا الله أحمد أبو حس | Abo Hassan, N/A N/A | Researcher | | |
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