[Analysis of linkage between biochemical and morphological markers of 1R-, 2R-, and 5R-chromosomes in rye with autofertility mutations in main incompatibility loci].
In F2 hybrids between self-sterile plants of the Volkhova cultivar and self-fertile lines with established self-fertility mutations (sf-mutations) at the major incompatibility loci S (1R), Z (2R), and T (5R), the effect of sf-mutations on the inheritance of secalin-encoding, isozyme, and morphological markers located on the same chromosomes was investigated. Linkage between loci Prx7 and S and locus Sec3 coding for high-molecular-weight secalins on chromosome 1R was shown for the first time The frequency of recombination between Prx7 and Sec3 and between S and Sec3 was 29.1 +/- 4.8% and 30.9 +/- 7.0%, respectively. Independent inheritance of locus Z and isozyme markers of chromosome 2R, Est3/5 and beta-Glu, from locus Sec2 encoding 75-kDa gamma-secalins was shown; in hybrids, the recombination frequency between Est3/5 and locus Z varied from 19.2 +/- 8.1 to 50%. Independent inheritance of morphological (Ddw and Hs) and isozyme markers (Est4, Est6/9, and Aco2) of chromosome 5R from locus T located on the same chromosome was demonstrated.
Egorova
I A
IA
Department of Genetics and Breeding, St. Petersburg State University, St. Petersburg, 199034 Russia. irina.egorova@paloma.spbu.ru
Peneva
T I
TI
Baranova
O A
OA
Voĭlokov
A V
AV
D002874:Chromosome Mapping; D005819:Genetic Markers; D005983:Glutens; D006023:Glycoproteins / Q000235:genetics*; D009154:Mutation; D010940:Plant Proteins / Q000235:genetics*; D011995:Recombination, Genetic; D012434:Secale / Q000235:genetics*
D005819:Genetic Markers; D006023:Glycoproteins; D010940:Plant Proteins; D005983:Glutens