Symbol	Yr4a
Name	Reaction to Puccinia striiformis Westend.
Synonym
Local	6B[1870]
Linkage
Origin
Tester	Vilmorin-23,Yamhill(Yr2,Yr3a),Viginta(Yr2,Yr3a),Cappelle-Desprez(Yr3a),Druchamp(Yr3a),Nord-desprez(Yr3a),Top(Yr3a),Maris-Freeman(Yr3a,Yr6),Kinsman(Yr3a,Yr6),Hobbit(Yr3a,Yr14)[1870]