GrainGenes Reference Report: EUP-91-31
Reference
EUP-91-31
Title
Molecular mapping of an aluminum tolerance locus on chromosome 4D of Chinese Spring wheat
Journal
Euphytica
Year
1996
Volume
91
Pages
31-35
Author
Luo MC Dvorak J Luo M-C
Abstract
The tolerance of aluminum (Al) of disomic substitution lines having the chromosomes of the D genome of Triticum aestivum L. cv. Chinese Spring individually substituted for their homoeologues in T. turgidum L. cv. Langdon was investigated by the hematoxylin method. The disomic substitution lines involving chromosome 4D were more Al tolerant than Langdon. The tolerance was found to be controlled by a single dominant gene, designated Alt2, that is in the proximal region of the long arm of chromosome 4D. The locus was mapped relative to molecular markers utilizing a population of recombinant chromosomes from homoeologous recombination between Chinese Spring chromosome 4D and T. turgidum chromosome 4B. Comparison of the location of Alt2 in this map with a consensus map of chromosomes 4B and 4D based on homologous recombination indicated that Alt2 is in a vicinity of a 4 cM interval delineated by markers Xpsr914 and Xpsr1051. The Alt2 locus is distal to marker Xpsr39 and proximal to XksuC2. The Altw locus is also proximal to the Knal locus on chromosome 4D that controls K+/Na+ selectivity and salt tolerance. In two lines, Alt 2 and Knal were transferred on a single 4D segment into the long arm of T. turgidum chromosome 4B.
External Databases
https://doi.org/10.1007/BF00035273
Gene
Alt2 (Triticum)
Germplasm
Langdon 4D(4B)
GrainGenes is a product of the Agricultural Research Service of the US Department of Agriculture.
GrainGenes Reference Report: EUP-91-31
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GrainGenes is a product of the Agricultural Research Service of the US Department of Agriculture. | |||