GrainGenes Gene Class Report: Sphaerococcum

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Gene Class	Sphaerococcum
Reference	Gupta N and Swaminathan MS (1967) An induced sphaerococcoid mutant in Triticum dicoccum. Current Science 36:19. [ Show all 6 ]
Abbreviation	s
Character affected	Gross morphology
Gene	s1 (Triticum) [ Show all 16 ]
Locus	[ Hide all but 1 of 10 ] Xgwm2-3A Xgwm720-3A Xgwm566-3B Xgwm685-3B Xgwm845-3B Xgwm456-3D Xgdm72-3D S-B1 S-A1 S-D1
Comment	See 'Gene_Class : Spelt' for comments regarding the Q, C, and S1 genotypes of hexaploid wheats and the durum and carthlicum groups. Sphaerococcum-like tetraploid wheats have been reported (93, 324, 908, 910), but comparisons between them, or with s2, have not been made. Whereas Schmidt & Johnson (907) reported a single recessive factor controlling the sphaerococcum character in tetraploid wheat, Joppa (442), using the same stock, found that two recessive genes were necessary to produce this phenotype.
Wheat Gene Catalog Reference	[ Hide all but 1 of 6 ] 324 Gupta N and Swaminathan MS (1967) An induced sphaerococcoid mutant in Triticum dicoccum. Current Science 36:19. 908 Schmidt JW and Johnson VA (1966) Inheritance of the Sphaerococcum effect in tetraploid wheat. Wheat Information Service 22:5-6. 93 Bozzini A (1965) Sphaerococcoid, a radiation-induced mutation in Triticum durum Desf. Use of Induced Mutations in Plant Breeding. Proceedings of FAO/IEAE Meeting, Rome, Italy 375-383. 907 Schmidt JW and Johnson VA (1963) A sphaerococcum-like tetraploid wheat. Crop Science 3:98-99. 910 Schmidt JW et al. (1963) Inheritance of an incompletely dominant character in common wheat simulating Triticum sphaerococcum. Crop Science 3:261-264. 442 Joppa LR WGS-95-1333-Ref#442.