Chemistry Reference
In-Depth Information
Some efforts have been made to develop crop plants that can complete life cycle in a very
short period of time, to avoid the dry season. Genetic hybridization and selection of some
barley cultivars are among these efforts [15-17].
Arabian Gulf
Ras Laffan
Al- Thakhira
Al- Khor
Dukhan
Doha
Umm Said
Figure 1.
A map of Qatar showing the main cities and locations.
(B) Drought avoidance
These plants maintain favorable water content when exposed to external water stress. Drought
avoidance is largely morphological-anatomical in nature. Two secondary mechanisms to avoid
drought are considered here:
a.
Water conservation: many plants can conserve water through the following
adaptations
:
