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GrainGenes Reference Report: CGC-26-78

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Reference	CGC-26-78
Title	Gametocidal genes in wheat and its relatives. I. Genetic analyses in common wheat of a gametocidal gene derived from Aegilops speltoides.
Journal	Canadian Journal of Genetics and Cytology
Year	1984
Volume	26
Pages	78-84
Author	Tsujimoto H Tsunewaki K
Type	Article
Abstract	Alloplasmic lines of 12 common wheats carrying G-type cytoplasm derived from an aucheri-type strain of Aegilops speltoides show about 50% reduction of female fertility compared with the alloplasmic lines of the same common wheats carrying G-type cytoplasms from other sources. This reduction of female fertility is caused by a gametocidal gene derived from Ae. speltoides. This gene has been preferentially transmitted through 16 successive backcrosses in which common wheat was the recurrent pollen parent, and has been present in the heterozygous state in every backcross generation. The karyotype and meiotic chromosome pairing of hybrid from reciprocal crosses between (Ae. speltoides)-cv. Chinese Spring and (Triticum aestivum)- cv. Chinese Spring are normal, indicating that the gametocidal gene derived from an Ae. speltoides chromosome subsequently was translocated to a wheat chromosome. This is the first case reported of the integration of a gametocidal gene into a wheat genome; the symbol given to it is Gcl. The F1 female and male gametes not carrying this gene abort and, consequently, all F2 progeny are homozygous for the gene and fully fertile. The origin and distribution of the Gcl gene and its potential use for hybrid wheat production have been discussed.
External Databases	DOI: 10.1139/g84-013
Allele	Gc1a (Triticum)
Gene	Gc1-B1a (Aegilops) Gc1 (Triticum) Gc1a (Triticum) Gc1-B1b (Aegilops)
Gene Class	Gametocidal activity
Cited in	McIntosh RA et al. (1995) Catalogue of gene symbols for wheat. Proceedings of the 8th International Wheat Genetics Symposium 1333-1500.

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