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Cold Acclimation Threshold Induction Temperatures in Cereals

Dep. of Plant Sciences, Univ. of Saskatchewan, 51 Campus Drive, Saskatoon, SK, Canada S7N 5A8

View larger version (20K): [in this window] [in a new window]   Figure 1. Low-temperature tolerance (LT50, SE = 0.30) of ‘Sisler’, ‘Dicktoo’, and ‘Kold’ barley, ‘Manitou’, winter ‘Manitou’, spring ‘Norstar’, and ‘Norstar’ wheat, and ‘Gazelle’ and ‘Puma’ rye established for 13 d at 20 to 22°C and then acclimated at 5, 8, 11, 14, 16, or 18°C in for 2 d in Exp. 3. The experiment was replicated three times in time and space.

View larger version (25K): [in this window] [in a new window]   Figure 2. Low-temperature tolerance (LT50, SE = 0.35) of ‘Manitou’, winter ‘Manitou’, spring ‘Norstar’, and ‘Norstar’ wheat established for 13 d at 20 to 22°C and then acclimated for 0, 2, 7 14, or 21 d at 8, 10, 11, 13, 14, or 16°C in Exp. 1. The experiment was replicated three times in time and space.

View larger version (15K): [in this window] [in a new window]   Figure 3. Days to the double ridge stage of phenological development (SE = 0.46) for ‘Manitou’ and spring ‘Norstar’ wheat established for 13 d at 20 to 22°C and then acclimated at 8, 10, 11, 13, 14, or 16°C in Exp. 1. The experiment was replicated three times in time and space.