Yet not, there are numerous reported minor QTLs adding to stripe corrosion resistance on chromosome 2B (Lan mais aussi al
QYr.lrdc-2B.1, QYr.lrdc-2B.2, QYr.lrdc-2B.3 and QYr.lrdc-2B.4 were mapped on the long arm of chromosome 2B, each identified in a single environment and explained less than 10% of phenotypic variation (Table 3). The long arm of wheat chromosome 2B is rich with many stripe rust resistance genes such as Yr5, Yr7, Yr43, Yr44, Yr53 and Yr72 (Wang and Chen 2017 ). All our identified QTLs on chromosome 2B were derived from the resistant parent ‘AAC Innova’, indicating that they might relate to one of these single genes. However, the phenotypic variation explained (<10%) by all individual 2B loci detected in this study suggests that the identified loci are different from those previously reported on the long arm of chromosome 2B, which have been reported to provide greater resistance than observed for individual QTLs in this study. spelta derived seedling resistance gene Yr5 on chromosome 2B, was highly resistant across environments (Table 2) in this study. There is no known or published report of introgression of Yr5 from spelt wheat or derived line into the parentage of ‘AAC Innova', suggesting that Yr5 could not be the source of resistance for all of the 2B loci identified in this study. 2010 ; Singh et al. 2014 ; Hou et al. 2015 ; Bokore et al. 2017 ). Based on consensus genetic maps (Wang et al. 2014 ; Maccaferri et al. 2015 ), the flanking markers of QTLs reported in these studies are positioned far away (>10-100 cM) from the flanking markers of our QTLs, suggesting that our reported QTLs are likely new and different from those previously reported on the long arm of chromosome 2B.
QYr.lrdc-5A, mapped on the chromosome 5A, try another very stable QTL inside our investigation, known within the four regarding five environments and you may taken into account 5–7% away from phenotypic type (Desk step 3). The new QTL interval try flanked by SNP indicators CAP7_c4064_162 and you may Kukri_c16087_281 (Fig. 3; Second Table S2). There are training giving support to the presence from small impact QTLs into the chromosome 5A (Rosewarne mais aussi al. 2012 ; Buerst ). There clearly was a possibility you to QYr.lrdc-5A and you will QYrdr.wgp.5AL acquiesced by Hou ainsi que al. ( 2015 ) is the exact same, considering consensus genetic maps created by Maccaferri ainsi que al. ( 2015 ) and you may Wang et al. ( 2014 ); SNP marker wsnp_Ex_c20899_30011827 directly on the QYrdr.wgp.5AL is situated 2 cM and 3 cM of all of our flanking marker Kukri_c16087_281 correspondingly. QYrdr.wgp.5AL said 2.27–% phenotypic version (Hou mais aussi al. 2015 ), coincidentally comparable to QYr.lrdc-5A.
Small feeling QTLs to your chromosome 7D have been understood merely from inside the several training (Basnet mais aussi al
QYr.lrdc-7D, derived from the brand new vulnerable parent ‘AAC Proclaim’, try identified in 2 individual surroundings (Lethbridge 2016 and you will Creston 2020), in which it taken into account 5% and you may eight% of your own phenotypic variation, correspondingly (Table step 3). 2014 ). Conversely, multiple studies said the presence of the latest Lr34/Yr18 gene into short arm out-of chromosome 7D (Lu ainsi que al. 2009 ; Yuan ainsi que al. 2018 ). Randhawa mais aussi al. ( 2012 ) stated that all of the Canadian grain cultivars bring the new Lr34/Yr18 gene. Yet not, the newest phenotypic effectation of QYr.lrdc-7D isn’t typical of your Lr34/Yr18 as it shown only small (5–6%) phenotypic variation and you may derived from prone parent ‘AAC Proclaim’, which is not designed to hold brand new Lr34/Yr18 gene.
QYr.lrdc-2D, shared by the prone moms and dad ‘AAC best app to hookup in college Proclaim’, was recognized merely regarding Lethbridge 2020 ecosystem and pooled analysis, in which it shared 4% from phenotypic adaptation and you will are closely for the SNP marker wsnp_JD_rep_c63957_40798083 (Dining table step 3). There are many earlier education revealing stripe corrosion resistance QTLs toward chromosome 2D (Lu ainsi que al. 2009 ; Agenbag mais aussi al. 2012 ; Lan ainsi que al. 2014 ; Ren ainsi que al. 2015 , 2017 ). All these QTLs was indeed present to your short-arm out of chromosome 2D for example QYr.lrdc-2D. Yet not, irrespective of their mapping on the same chromosome case, the latest bodily condition (21–twenty-two Mb) off QYr.lrdc-2D (Desk 3) does not convergence with any of the QTLs with the IWGSC RefSeq v1.0, indicating it could be distinct from these types of QTLs.