Abstract
Seed of wheat cv. C 306 was more dormant, higher ABA-sensitive and more desiccated than PBW 343. Dormancy and ABA-sensitivity decreased, and seed moisture content increased during after-ripening, where decrease in ABA-sensitivity was greater in PBW 343. Dry embryo of C 306 contained lesser level of ROS (H2O2 and superoxides) and nitric oxide than that of PBW 343. ROS and nitric oxide increased during after-ripening, and such increase was higher in PBW 343. Dry embryo of C 306 contained higher level of ascorbate, glutathione, lesser level of proline and similar level of phenolics than that of PBW 343. All these non-enzymatic antioxidants except ascorbate decreased during after-ripening. Dry embryo of C 306 showed higher activities of ascorbate peroxidase (APX), catalase (CAT), and lower activity of peroxidase (POX) than that of PBW 343. Activities of APX and CAT did not change, POX decreased, while GR increased during after-ripening, and decrease in POX activity was greater in PBW 343.
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Kaur, K., Zhawar, V.K. Antioxidant potential of fresh and after-ripened dry embryos of two wheat cultivars contrasting in drought tolerance. Ind J Plant Physiol. 21, 350–354 (2016). https://doi.org/10.1007/s40502-016-0228-1
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DOI: https://doi.org/10.1007/s40502-016-0228-1