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Drought Tolerance of Tall Fescue Populations Selected for High Root/Shoot Ratios and Summer Survival

^a Dep. of Horticulture, Univ. of Arkansas, 316 Plant Sciences Bldg., Fayetteville, AR 72701
^b Nexgen Seed Research, LLC, 33725 Columbus St. SE, Albany, OR 97321-0452

View larger version (28K): [in this window] [in a new window]   Figure 1. Predicted dry-down curves for tall fescue entries in 2003 and 2004.

View larger version (35K): [in this window] [in a new window]   Figure 2. The 95% confidence intervals for the number of days after water was withheld until tall fescue entries reached 75, 50, and 25% green cover in 2003 and 2004. Within each year and green cover percentage, entries with overlapping bars were not significantly different.

View larger version (182K): [in this window] [in a new window]   Figure 3. Digital images of tall fescue entries taken at 53 d after drought stress was imposed on plots in 2003. Numbers in parentheses represent the percentage of green tissue in the plot, as determined by digital image analysis.