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We identified haplotype-tagging insertion/deletions (InDels) for downy mildew resistance (Rpv3-1) in grapevine and converted them into InDel markers. InDel-25,941 and InDel-26,032 were validated by fragment analysis via capillary electrophoresis in 174 varieties of Vitis vinifera, 50 resistant varieties of the ‘Seibel 4614’ lineage that share Rpv3-1 by descent, and in 83 Vitis accessions. Amplicon...
Grape varieties with resistance to downy mildew (DM) carry alien chromosome segments in Vitis vinifera backgrounds. We previously showed that the largest descent group shares a non‐vinifera haplotype at the locus Rpv3. Here, we performed a common garden experiment with 76 varieties to evaluate the level of field resistance across four years. All varieties exhibited effector‐triggered immunity (ETI)‐associated...
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