Data on linkage of 12 rye genes controlling morphological traits (el, Vs, ln, w, np, ct2, Hs, Ddw, cb, mn, vi1, mp) with one or several isozyme markers of individual rye chromosomes (2R–7R) are presented. Linkage of the following gene pairs was established: chromosome 2R: Est3/5–el, el–β-Glu, Sod2–el, Sod2–Vs; chromosome 3R: ln–Got4; chromosome 4R: w–Got1, np–Got1; chromosome 5R: Est4–ct2, Est6/9–ct2, ct2–Est2, ct2–Aco2, Est2–Hs, Aco2–Hs, Est2–Ddw, Aco2–Ddw; chromosome 6R:Lap2–cb, cb–Aco1, Est10–mn; chromosome 7R: Acph2/3–vi1, Got2–vi1, mp–Acph2/3. The reasons for mapping a very small number of genes in rye in spite of high intraspecific variability of this species are discussed. An approach is suggested to improve this situation by simultaneous identification and mapping of all diverse spontaneous mutations maintained in heterozygous state in various rye cultivars.
Russian Journal of Genetics – Springer Journals
Published: Oct 18, 2004
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