PMC:4502374 / 26471-28099 JSONTXT

{"target":"http://pubannotation.org/docs/sourcedb/PMC/sourceid/4502374","sourcedb":"PMC","sourceid":"4502374","source_url":"https://www.ncbi.nlm.nih.gov/pmc/4502374","text":"QTL for rust resistance:\nFor rust resistance, 13 QTLs were identified on the two bioassays. A major QTL for the four components of rust resistance (SI, TL/LA, SL/LA, and IncPer) was consistently identified in both bioassays and mapped at the same marker interval on map position 35.1−42.9 cM on LG B08, with LOD scores between 2.9 and 8.2. Its closest marker is Ah-280. This QTL explained 5.8–59.3% of the phenotypic variance of the four different traits (SI, TL/LA, SL/LA, and IncPer). Another QTL for SI and TL/LA evaluated in 2012 and for IncPer_2013 was found at 25.4−33.1 cM on the same LG B08 (Table 1, Figure 3), explaining 13.2–34.8% of the total variance in 2012 and 2013, respectively. The closest markers are AHGS1350 and AHGS2541. In addition to these two QTL, two minor QTL were identified in LGs B04 and B07 for SI_2012. For all QTL, resistance was derived from A. magna. The contribution of A. magna alleles for the rust resistance-related traits was evaluated by calculating the average phenotypes of the homozygote plants for the A. magna allele vs. the average phenotype of those homozygote for the A. ipaënsis allele (Figure 4). Arachis magna alleles contributed significantly for the reduction of SI, TL/LA, and SL/LA. The effect of A. magna alleles was less pronounced for IncPer (Figure 4).\nFigure 4 Bar graph of contribution of A. ipaënsis K 30076 (blue bars) vs. A. magna K 30097 (orange bars) alleles to the rust resistance-related traits: susceptibility index (SI), number of sporulated lesions/leaf area (SL/LA), total number of lesions/leaf area (TL/LA). and incubation period (days/20) (IncPer/20).","divisions":[{"label":"title","span":{"begin":0,"end":24}},{"label":"p","span":{"begin":25,"end":1312}},{"label":"label","span":{"begin":1313,"end":1321}}],"tracks":[]}