GrainGenes Reference Report: CGC-25-215
Reference
CGC-25-215
Title
Transfer of stem rust resistance to wheat from an Agropyron chromosome having a gametocidal effect.
Journal
Canadian Journal of Genetics and Cytology
Year
1983
Volume
25
Pages
215-221
Author
Kibirige-Sebunya I Knott DR
Abstract
Two procedures were used to induce homoeologous recombination between Agropyron elongatum (Host) Beauv. chromosome 7el2 and wheat chromosomes. One procedure involved the use of 'Chinese Spring' nullisomic 5B tetrasomic 5D, and resulted in plants lacking chromosome 5B. In the second procedure, a line carrying the mutant gene ph1b was used, and plants were produced that had only a 5B chromosome carrying ph1b. Both procedures resulted in the transfer of a gene or genes for stem rust (Puccinia graminis tritici Eriks. and Henn.) resistance from chromosome 7el2 to wheat chromosomes. During the transfer process, it was discovered that both the whole Agropyron chromosome and the recombinant chromosomes showed preferential transmission through the female gametes, but not through the male gametes. On heterozygous plants seed set was greatly reduced. Apparently, the Agropyron chromosome or a gene carried by it had a gametocidal action that resulted in female gametes, which did not carry the gene, failing to function. However, homozygous lines showed normal fertility.
External Databases
DOI: 10.1139/g83-035
Gene
Sd1 (Lophopyrum) Sd2 (Lophopyrum)
Cited in
McIntosh RA et al. (1995) Catalogue of gene symbols for wheat. Proceedings of the 8th International Wheat Genetics Symposium 1333-1500.
GrainGenes is a product of the Agricultural Research Service of the US Department of Agriculture.
GrainGenes Reference Report: CGC-25-215
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GrainGenes is a product of the Agricultural Research Service of the US Department of Agriculture. | |||