MATRIX 100 3 ) The effect of leaf exposure to high temperatures on the ) chlorophyll content of soybean cotyledons. One hundred ) soybean plants are randomly allocated into ten groups of ) ten each. Each group is assigned to one of the combinations ) of heat treatment (none, 45, 55, 60, or 65 degrees C) and ) days after exposure (3 or 7). Leaves are exposed (by ) immersion in water of the given temperature) when the ) plants are two weeks old, but the cotyledons are ) protected from heat exposure. the cotyledons are harvested ) 3 or 7 days after exposure and their chlorophyll content ) is determined as the response (in ug/mg dry weight). ) Columns are days, heat, and response. ) Data based on Gilson, Carol L. (1981) "the Chlorophyll Content ) of Cotyledons as a Measurement of Thermal Injury to Soybean ) (_Glycine Max (L.) Merr._) and Sunflower (_Helianthus Annus L.) ) Seedlings," MS Thesis, University of Minnesota, St. Paul, MN. )"%lf %lf %lf" 1 1 4.67 2 1 3.13 1 2 9.05 2 2 8.18 1 3 7.15 2 3 3.93 1 4 7.24 2 4 4.28 1 5 7.61 2 5 10.58 1 1 6.18 2 1 7.01 1 2 6.08 2 2 0.88 1 3 10.68 2 3 3.02 1 4 4.8 2 4 5.84 1 5 4.4 2 5 11.59 1 1 5.52 2 1 6.43 1 2 8.33 2 2 3.34 1 3 6.19 2 3 5.51 1 4 6.62 2 4 9.88 1 5 8.55 2 5 6.52 1 1 5.86 2 1 1.48 1 2 8.89 2 2 0.04 1 3 6.05 2 3 5.81 1 4 7.45 2 4 5.36 1 5 7.76 2 5 9.81 1 1 5.28 2 1 8.27 1 2 8.7 2 2 5.31 1 3 6.81 2 3 -0.19 1 4 6.68 2 4 6.84 1 5 8.4 2 5 8.76 1 1 4.75 2 1 -0.58 1 2 5.07 2 2 1.14 1 3 7.89 2 3 6.05 1 4 5 2 4 4.88 1 5 5.81 2 5 11.6 1 1 4.67 2 1 -1.98 1 2 5.14 2 2 3.76 1 3 10.78 2 3 8.85 1 4 5.86 2 4 8.01 1 5 5.41 2 5 5.46 1 1 6.2 2 1 4.75 1 2 5.88 2 2 0.5 1 3 4.27 2 3 2.52 1 4 5.54 2 4 7.19 1 5 4.93 2 5 9.05 1 1 5.27 2 1 1.17 1 2 8.25 2 2 3 1 3 6.33 2 3 2.61 1 4 6.03 2 4 5.66 1 5 6.04 2 5 5.92 1 1 5.8 2 1 2.51 1 2 8.47 2 2 6.2 1 3 6.71 2 3 5.99 1 4 5.7 2 4 8.13 1 5 7.18 2 5 11.28