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Aluminum Tolerance Associated with Quantitative Trait Loci Derived from Soybean PI 416937 in Hydroponics

^a Dep. Crop Sci., North Carolina State Univ., Raleigh, NC, 27695-7620 USA
^b USDA-ARS and Dep. Crop Science, North Carolina State Univ., Raleigh, NC, 27695-7631 USA
^c Dep. Statistics, North Carolina State Univ., Raleigh, NC, 27695-7803 USA
^d Pioneer Hi-Bred Int., Inc., 7300 NW 62nd Ave., P.O. Box 1004, Johnston, IA, 50131 USA
^e Dep. of Crop and Soil Sciences, and R.S. Hussey, Dep. of Plant Pathology, Univ. of Georgia, Athens, GA, 30602-7272 USA

View larger version (29K): [in a new window]   Fig. 1 The RFLP markers associated with tap root extension in the absence, 0 µM (NOAL), and presence, 2.0 µM (HIAL), of Al3+ activities and with Al tolerance expressed as PC (percent of control = HIAL/NOAL x 100). Length of bars indicates R2 values for the loci associated with tap toot extension, where R2 is defined as the proportion of the phenotypic variation among line means accounted for by a RFLP marker in a single factor analysis. The genetic map consisted of 155 RFLP markers in 33 linkage groups and covering approximately 973 cM. Only those linkage groups with markers associated with tap root extension in this study are presented. The population-specific linkage groups are designated LG. The population-specific map was reconciled with an existing USDA/ISU soybean genetic map using anchor probes and markers. The corresponding USDA/ISU linkage groups are given in parenthesis for comparison. * represents an anchored probe which had an identical banding pattern with the image in Grant et al. (1996). A marker locus is identified by a probe designation and a dashed number suffix, where the latter identifies the specific locus of the two or more loci detected by that probe