RESPONSE OF INTRODUCED SPRING BREAD WHEAT GENOTYPES TO WATER STRESS | ||||
| Journal of Plant Production | ||||
| Article 11, Volume 27, Issue 11, November 2002, Page 7357-7371 PDF (18.89 MB) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/jpp.2002.257036 | ||||
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| Authors | ||||
| M. H. Rashad,1; E. A. Ismail2; H. M. Emad EI-Din3 | ||||
| 1Plant Physiology Section, Botany Dept. | ||||
| 2Agronomy Dept., Fac. Of Agric., Cairo Unlv. Giza, Egypt | ||||
| 3Plant Dept., Fac. of Science, Cairo Univ. ,Giza, Egypt. | ||||
| Abstract | ||||
| Twenty one bread wheat genotypes introduced from ICARDA along with the Egyptian check (Sakha 61) were evaluated for tolerance to water stress in two sucessive seasons (199912000 and 200012001). Three moisture levels were used; 100% (control), 70% and 50% of field capacity. Water stress treatments resulted in significant reductions in growth parameters, nutrient uptake, chlorophyll and yield components, while proline content increased for all genotypes. Root length, leaf area, proline, chlorophyll, NPK, sugar and amino acids were good criteria for drought tolerance and they were highly correlated with yield components. Five genotypes exhibited high dry matter accumulation, proline concentration and better yield parameters under water stress conditions and were either equal to or better than the Sakha 61. Two of the source parents (Kauz's' and Vee's') were common in the tolerant genotypes and are potentially a good source for water stress tolerance in wheat breeding programs. | ||||
| Keywords | ||||
| wheat; genotypes; drought stress; chemicals; proline; yield | ||||
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