Physiological Genetics of Aluminum Tolerance in the Wheat Cultivar Atlas 66
Y. Tanga,
D. F. Garvin*,d,
L. V. Kochiana,
M. E. Sorrellsc and
B. F. Carverb
a USDA-ARS, U.S. Plant, Soil and Nutrition Lab., Tower Road, Ithaca, NY 14853
b Dep. of Crop and Soil Sciences, Oklahoma State Univ., Stillwater, OK 74078
c Dep. of Plant Breeding, Cornell Univ., Ithaca, NY 14853
d USDA-ARS, Plant Science Research Unit, 411 Borlaug Hall, Univ. of Minnesota, 1991 Upper Buford Circle, St. Paul, MN 55108

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Fig. 1. Effect of increasing solution Al concentrations on the root elongation of seedlings of different wheat genotypes.
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Fig. 2. Hematoxylin staining of root apices of wheat genotypes grown in 200 µM CaCl2 solution, pH 4.5, containing 20 µM AlCl3. Roots were stained after 24 h of exposure to Al. A, Atlas 66; Ce, Century; Ch, Chisholm; CeT, Century-T; ChT, Chisholm-T.
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Fig. 3. Al accumulation in root apices of different wheat genotypes grown hydroponically across a range of Al concentrations.
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Fig. 4. Influence of different solution Al concentrations on rates of root tip malate efflux by different wheat genotypes.
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Fig. 5. Influence of solution Al concentration on rates of root phosphate efflux by different wheat genotypes.
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Copyright © 2002 by the Crop Science Society of America.