Rye introgression
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Content shifted to a separate WEB site: http://www.rye-gene-map.de/rye-introgression/

Current  list of wheats with rye introgression  

of  homoeologous groups 1, 4 and 5

After  the  first  reports on  spontaneous  wheat-rye  chromosome substitutions 5R(5A) by Katterman (1937), O'Mara (1946) and Riley and Chapman (1958), during the past three decades  particularly, 1R(1B) substitutions and 1RS.1BL translocations were described in more  than 200  cultivars  of wheat  from  all over  the  world (Blüthner  and  Mettin 1973; Mettin et al.  1973;  Zeller  1972; Zeller  1973;  Zeller and Fischbeck 1971). Their  most  important phenotypic deviation from common wheat cultivars is the so-called wheat-rye resistance, i. e. the presence of wide-range resistance to  races  of powdery mildew and rusts (Bartos  and  Bares  1971; Zeller 1973), which is linked with decreased breadmaking  quality (Zeller  et  al. 1982), good ecological adaptability  and yield performance (Rajaram et al. 1983; Schlegel and Meinel 1994). The origin of the alien chromosome was intensively discussed  by genetic  and  historical reasons. It turned out  that basically four sources   exist - two in Germany (it might be one source, see Schlegel and Korzun 1997), one in the USA and one in Japan. The variety 'Salmon' (1RS.1BL) is a representative of  the latter (Tsunewaki 1964) and the variety 'Amigo' (1RS.1AL)  is  a representative  of the penultimate group (Beronsky et  al.  1991; The  et al. 1992), while almost all remaining cultivars  can  be traced  back to one or to the other German origin  (Zeller  1973; Blüthner and Mettin 1977). There  was  no doubt so far that the Japanese  and  the American derivatives differ from one another and from the German  sources. Although  on  two  places of Germany  - Salzmuende  near  Halle/S (breeder:  Riebesel)  and  Weihenstephan  near Munich  (breeder: Kattermann)  - wheat-rye crosses were already carried  out since the twenties  and thirties and independent  pedigrees  could  be fragmentally reconstructed  by the few  reports  left  (Blüthner 1992),  some authors presumed only one German source (Lein 1975; Moonen and Zeven 1984; Schlegel and Korzun 1997). For  breeding  programmes  additional  recombination  within  the translocated  1RS  arm  of rye and between  the  different  wheat genetic backgrounds is wished (Müller et al. 1991a; Lutz et  al. 1992).

© by R. Schlegel 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014

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