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Base Temperatures for Seedling Growth and Their Correlation with Chilling Sensitivity for Warm-Season Grasses

^a R.M. Madakadze, Dep. of Crop Science, Univ. of Zimbabwe, P.O. Box MP 167, Mount Pleasant, Harare, Zimbabwe
^b Dep. of Plant Science, McGill Univ., 21-111 Lakeshore Road, Ste-Anne-de-Bellevue, QC, Canada H9X 3V9

View larger version (27K): [in a new window]   Fig. 1. Total dry weight changes with time for ‘Cave-in-Rock’, ‘Holt’, ‘Pronghorn’, and ‘Niagara’ seedlings under different temperatures. Different scales on the y-axes are indicative of the relative sizes of the seedlings from the different species. Error bars denote standard error.

View larger version (32K): [in a new window]   Fig. 2. The effect of temperature on the relative growth rates of warm-season grass seedlings. Error bars denote standard error.

View larger version (33K): [in a new window]   Fig. 3. The correlation of (A) chlorophyll fluorescence, (B) leaf damage, and (C) rate of electrolyte leakage with base temperature for seedling growth in warm-season grass seedlings subjected to cold stress. Error bars denote standard error.