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The sunflower germplasm line TX16R is resistant to Plasmopara halstedii (causal agent of sunflower downy mildew) and Puccinia helianthi (causal agent of sunflower rust), which are two destructive foliar diseases in sunflower production worldwide. This study reports the mapping of the downy mildew and rust resistance genes Pl33 and R16 from TX16R, respectively. Progeny testing of test crosses for downy...
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