Genetic studies of self-fertility in rye (Secale cereale L.). 1. The identification of genotypes of self-fertile lines for the Sf alleles of self-incompatibility genes

Segregation for self-fertility has been studied in progenies from the crosses of self-sterile (SS) plants with interline hybrids obtained by a diallel scheme of pollinations between seven self-fertile (SF) lines (nos. 2-8) and with F1 (SS plant x SF line) hybrids. All the offspring families from the...

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Published in:Theoretical and applied genetics 1993-12, Vol.87 (5), p.616-618
Main Authors: Voylokov, A.V. (St. Petersburg State Univ. (Russian Federation). Dept. of Genetics and Breeding), Fuong, F.T, Smirnov, V.G
Format: Article
Language:English
Subjects:
AUTOCOMPATIBILIDAD
AUTOCOMPATIBILITE
AUTOESTERILIDAD
AUTOSTERILITE
GENE
GENES
GENOTIPOS
GENOTYPE
Incompatibility genes
SECALE CEREALE
Secale cereale L
Self-fertility
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Summary:Segregation for self-fertility has been studied in progenies from the crosses of self-sterile (SS) plants with interline hybrids obtained by a diallel scheme of pollinations between seven self-fertile (SF) lines (nos. 2-8) and with F1 (SS plant x SF line) hybrids. All the offspring families from the SS plant x F1 (SS plant x SF line) crosses demonstrated a ISF:ISS segregation. The crosses of SS plants with some interline hybrids gave only self-fertile plants, whereas the crosses with other interline hybrids gave a segregation of 3SF:ISS expected in the case of digenic segregation. The data obtained permitted us to identify three different S loci (S1, S2, S5) and to estimate the genotypes of self-fertile lines for their Sf alleles: lines 5, 6, 7 and 8 are S1f/S1f S2n/S2n SSm/S5m, line 4 is S1n/S1n S2f/S2f S5m/S5m, and lines 2 and 3 are S1n/S1n S2m/S2m S5f/S5f (Sn, Sm designate active alleles of the incompatibility genes). The identification of the particular S gene which is presented by the Sf allele in each line has been made on the basis of our data concerning the linkage of the Sf mutation with isozyme markers of particular rye chromosomes, which is reported in an accompanying paper.
ISSN:0040-5752
1432-2242
DOI:10.1007/BF00221887