Table 2.
Species | R-like gene loci | Linkage to resistance loci |
---|---|---|
Rice | ||
RHC-A (Os-r2, Os-r6.4, Os-b8) | Pi-1(t)46,49, Xa-347, Xa-447, Pi-k48, Pi-f49: R gene cluster(chr.11) | |
RHC-B (Os-r4.2, Os-r11, Os-r12) | Pi-7(t)50(chr.11) | |
Os-r6.2, Os-r5 | Xa-1051(chr.11) | |
Os-r6.3 | Pi-11(t)22(chr.8) | |
Os-r4.1 | Xa-123(chr.4)* | |
Barley | ||
Hv-b6.1 | Mla-620(chr.1H)† | |
Hv-b7 | Ml-k52(chr.1H) | |
Hv-r1 | Ml-nn52(chr.1H) | |
Hv-b3.2 | ym-11(chr.4H) | |
Hv-b7.2, Hv-b2.3 | Rph1153(chr.3H) | |
Hv-b9 | Rpg125(chr.7H)‡ |
R gene homologue loci were correlated to described R loci by comparison with flanking RFLP or morphological markers. Superscript numbers give references for each resistance trait.
r4 probe identifies a rice yeast artificial chromosome clone containing Xa-1; see text.
Cosegregation was found in 71 double haploid progeny segregating for Mla-6.
Hv-b9 maps in the same genetic interval as Rpg1.