Registration of Common Bacterial Blight Resistant Dark Red Kidney Bean Germplasm Line USDK‐CBB‐15

Abstract

Dark red kidney bean (Phaseolus vulgaris) germplasm line USDK-CBB-15 was developed by the USDA-ARS in cooperation with the Idaho Agricultural Experiment Station. It is a modified BC3F1:4 bulk from the cross K97305/3/SVM-2242//I9566-21-4-2/'Montcalm'. It was released in 2005 on the basis of its resistance to common bacterial blight caused by Xanthomonas axonopodis pv. phaseoli. In a greenhouse inoculation test, USDK-CBB-15 had a mean disease score of 2 on the basis of a 1 to 9 scale, in which 1 is resistant and 9 is completely susceptible. It possess both the SAP6 and SU91 markers linked with major QTL for resistance derived from Montana No.5 (via Montcalm) and tepary bean (via XAN 159), respectively. It exhibits a Type I determinate bush growth habit typical of kidney bean. Yield was 108% of 'Red Hawk' dark red kidney at Othello, Washington in 2004. Average weight of 100 seeds was 52 g and equal to Red Hawk. USDK-CBB-15 matured in 98 days, which is 2 days later than Red Hawk. It also exhibits a hypersensitive resistance response to the NL-3 strain of Bean common mosaic necrosis virus.