The effect of soil drought and rehydration on growth and antioxidative activity in flag leaves of triticale
Baczek-Kwinta, R.(Agricultural Univ., Krakow (Poland). Plant Physiology Dept.) E-mail:[email protected] | Filek, W.(Agricultural Univ., Krakow (Poland). Plant Physiology Dept.) | Grzesiak, S.(Polish Academy of Sciences, Krakow (Poland). Inst. of Plant Physiology) | Hura, T.(Polish Academy of Sciences, Krakow (Poland). Inst. of Plant Physiology)
Changes in the activity of catalase and superoxide dismutase, together with growth parameters were investigated in flag leaves of four winter triticale cultivars, Bogo, Presto, Tewo and Ugo. Water stress was applied during shooting (Ds) or heading (Dh) stage. Dry matter of the main shoot and tillers was similarly restricted by both drought periods. The length of the main shoot was more constrained by Ds, in contrast to the number of tillers, restricted strongly by Dh. The resumption of growth after rehydration was clearer in cvs. Bogo and Tewo, and hence these two cultivars were considered more drought-resistant than Presto and Ugo. Neither catalase nor superoxide dismutase activity was influenced by the term of the drought and the genotype.
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