ISSN:
1399-3054
Source:
Blackwell Publishing Journal Backfiles 1879-2005
Topics:
Biology
Notes:
Winter wheat (Triticum aestivum L. cv. Fredrick) seedlings (seed) treated with different concentrations of uniconazole (S-3307) were water stressed by withholding water for 2, 4 and 6 days. Subsequently, the water-stressed seedlings were exposed to heat shock at 45°C for 3 h. Chlorophyll fluorescence, stress-ethylene and percentage survival were the parameters used to monitor the efficacy of protection against thermal stress by uniconazole. In the control seedlings, water stress for 2 days prior to heat shock provided minimal protection, whereas uniconazole protected both water-stressed and non-stressed seedlings from heat injury. However, the degree of protection by uniconazole was enhanced if the seedlings were subjected to water stress (2–4 days) prior to the heat shock. In addition to protection against heat injury, uniconazole also reduced stress-induced (water and heat) ethytene levels.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1111/j.1399-3054.1988.tb00643.x
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