A New Small Red Bean with Improved Resistance to Common Bacterial Blight: Registration of 'Rio Rojo'. Issue 2 (4th March 2013)

• Record Type: Journal Article
• Authors: Osorno, Juan M.; Grafton, Kenneth F.; Vander Wal, Albert J.; Gegner, Sarah L.
• Is Part Of: Journal of plant registrations. Volume 7:Issue 2(2013)
• Page Start: 130
• Page End: 134
• Publication Date: 2013-03-04
• Subjects: Crops -- Genetic engineering -- Registers; Crops -- Germplasm resources -- Registers; Plant genetic engineering -- Periodicals; Plants -- Development -- Periodicals; Crops -- Genetic engineering; Crops -- Germplasm resources; Plant genetic engineering; Plants -- Development; Electronic journals; Periodicals; Registers (Lists); 631.523
• DOI: 10.3198/jpr2012.07.0014crc
• Languages: English
• ISSNs: 1936-5209

Abstract

Abstract : 'Rio Rojo' (Reg. No. CV‐304, PI 666041) is a new cultivar belonging to the small red bean ( Phaseolus vulgaris L.) market class, developed by the dry bean breeding program at North Dakota State University and released by the North Dakota Agricultural Experiment Station. Rio Rojo is a medium‐early‐maturing, high‐yielding small red bean with commercially acceptable seed size, shape, and appearance. Rio Rojo is erect (Type IIb), has good lodging resistance, and exhibits good and synchronous plant drydown before harvest. Rio Rojo has shown an average seed yield increase of 257 kg ha −1 above that of 'Merlot', the small red cultivar most commonly grown in the United States. Rio Rojo had a higher seed yield than Merlot in 6 out of 17 environments when they were tested together. Rio Rojo has similar agronomic performance as Merlot for other traits, but Rio Rojo has a smaller seed size. In addition, a Red Variety Trial was grown in five environments in which Rio Rojo had the highest seed yield (2464 kg ha −1 ) across all environments. Besides the high seed yield, Rio Rojo has improved resistance to common bacterial blight (CBB). The intermediate levels of CBB resistance observed in field tests showed that Rio Rojo is better than any of the small red cultivars commonly grown in the United States and could therefore become one of the most important small red bean cultivars in the United States.