MOLECULAR CHARACTERIZATION AS A DEFENSIVE SYSTEM OF WHEAT GENOTYPES UNDER DROUGHT STRESS
|Soleiman mohammadi1, Farshad habibi 2* and Mohammad Rezaie1
|Corresponding Author: Farshad habibi, Assistant professor of Agronomy, Islamic Azad University, Miyandoab branch, Miyandoab, West Azerbaijan, Iran, E-mail: email@example.com|
|Received: 04 January 2014 Accepted: 30 January 2014|
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The experiment was carried out in Western Azerbaijan agricultural research center at Miandoab station in growing season 2009-2011. Main plots in this experiment included Different levels of irrigation after heading stage (70, 100 130 and 160 mm evaporation from class A pan) and the sub-plots consisted of 10 genotypes of bread wheat were planted in six rows. Drought is an important environmental factor, which induces significant alterations in plant physiology and biochemistry. Carotenoids are a large class of isoprene molecules, which were synthesized by all photosynthetic and many non-photosynthetic organisms. Results of analysis of variance show that significant differences between the fore late drought stress levels on carotene, Flavonoid, Fenol Tom, sucrose, fructose, glucose, proline and grain yield, Also inter action effect of drought stress level and genotype had the significant effect on same treat and it was show that the drought had a significant effect on biochemical regulation against drought condition. Otherwise correlation coefficient table for measured treat showed the high positive and negative correlation between measured treat in drought stress condition and there could be a mechanism for scape the drought period in experimental variety and line. Grain yield were affected by photosynthesis rate of crop and it was dependent light harvesting by organic complex like carotenoids and xanthophylls. Synthesis of lipids and pigments such as chlorophyll, xanthocynin and carotenoid is interrupted by water stress, and dues the high grain yield variety and genotype should have the molecular defensive mechanism as shown in this phase.