An analysis of the effects of water stress on leaf growth and yield of three barley cultivars |
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| Authors: | Bassam Taha Yasseen Saif Sami Al-Omary |
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| Institution: | (1) Department of Biology, College of Science, The University of Mosul, Mosul, Iraq;(2) Department of Biology, College of Science, The University of Sana'a, Sana'a, Yemen |
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| Abstract: | The main objective of the study was to evaluate the sensitivity of Iraqi local barley cultivar (Black) to soil water deficit as compared to other barley cultivars, namely: CM-72 and Arivat. The local cultivar proved to be susceptible during germination and emergence, but it developed resistance during the vegetative growth and yield formation stages. Growth analysis of individual leaves clearly showed that Black barley produced leaves of long growth duration which could affect the growth processes especially cell division. Thus, the reduction in the number of cells composing those leaves was small in the cultivar Black. Leaf growth rates as soil matric potential decreased, were reduced considerably, although, no clear trends were observed between cultivars. On the other hand, the smaller cell volume of local cultivar may have a role in its ability to tolerate water deficit. Some evidence that the local cultivar is post-flowering resistant is discussed. |
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