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An Isozyme Marker for Pollen Fertility Restoration in the Pampa cms System of Rye ( Secale cereale L.) *
Author(s) -
Wricke G.,
Wilde P.,
Wehling P.,
Gieselmann Charis
Publication year - 1993
Publication title -
plant breeding
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.583
H-Index - 71
eISSN - 1439-0523
pISSN - 0179-9541
DOI - 10.1111/j.1439-0523.1993.tb00644.x
Subject(s) - secale , biology , pollen , cytoplasmic male sterility , locus (genetics) , marker assisted selection , fertility , isozyme , sterility , genetics , gene pool , botany , genetic marker , hybrid seed , gene , hybrid , genetic diversity , population , biochemistry , demography , sociology , enzyme
Hybrid breeding in rye ( Secale cereale L.) based on cytoplasmic male sterility requires a sufficient restoration of pollen fertility to guarantee full seed set in the hybrid variety. Therefore the selection of effective restorer lines is an important goal in the breeding process. An F2 generation tracing back to a cross of a nonrestorer line as seed parent and a restorer line, and subsequent three‐way crosses between the corresponding F 1 plants and a nonrestorer line were used to find marker genes for pollen fertility restoration. A linkage between the Prx.7 isozyme locus on chromosome 1R and a putative major gene (or gene complex) for pollen fertility restoration with a recombination value of about 20 % was found. To our knowledge, this is the first case of a marker gene for this trait in rye.