OAC Rex common bean

Michaels, Thomas E.; Smith, Thomas H.; Larsen, Julie S.; Beattie, Aaron D.; Pauls, K. Peter

doi:10.4141/p05-128

Cited by 53 publications

(53 citation statements)

References 8 publications

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“…The resistant navy bean line OAC 95-4 had superior yield and acceptable cooking quality. This line was registered in 2002 as OAC Rex, and became the first CBB-resistant cultivar in Canada (Michaels et al 2006). In the future as new resistant cultivars are released, Canadian-based seed multiplication will expand and seed costs should decrease.…”

Section: Mots Clé Smentioning

confidence: 99%

The performance of dry bean cultivars with and without common bacterial blight resistance in field studies across Canada

Gillard¹,

Conner²,

Howard³

et al. 2009

Can. J. Plant Sci.

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Common bacterial blight (CBB) is a serious seed-borne disease in dry beans (Phaseolus vulgaris). Plant breeders have focused on genetic resistance to control this disease, and this led to the release of the first resistant cultivar (OAC Rex) in 2002. In 2003 and 2004, field studies were conducted at six sites across Canada to measure the impact of CBB resistance on dry bean seed yield. Two resistant and four susceptible cultivars were evaluated in noninoculated and inoculated experiments at each site. In the noninoculated experiments, the CBB incidence was very low and there were no treatment differences for measurements of leaf disease. Significant disease pressure occurred in the inoculated experiments at 7 of 12 site-years. Both resistant cultivars usually had less leaf disease than the susceptible cultivars. Yield comparisons between the inoculated and noninoculated experiments were conducted using a yield index calculation to estimate the impact of CBB on the yield of the cultivar. OAC Rex and HR67 had a mean yield advantage of 23.1 and 13.8%, respectively, compared with the mean of the four susceptible cultivars. This is similar to the yield advantage previously reported in the literature. Key words: Dry bean, Phaseolus vulgaris, Xanthomonas axonopodis pv. phaseoli, resistance, yield

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Section: Mots Clé Smentioning

confidence: 99%

The performance of dry bean cultivars with and without common bacterial blight resistance in field studies across Canada

Gillard¹,

Conner²,

Howard³

et al. 2009

Can. J. Plant Sci.

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“…This suggests that the two QTL may be the same or of the same origion. Tar 'an et al (2001) identified three QTL from OAC-95-4, which is a sibling breeding line of the OAC-88-1 and the experimental name of the OAC-Rex cultivar (Michaels et al, 2006 Table 3. Commonly used MMs associated with the major CBB resistance gene(s) /or QTL and their primer sequences major QTL associated with the SSR marker PHVPVPK-1 w a s m a p p e d o n L G G 5 (corresponding to B5 or chromosome 5), which explained over 42% of the phenotypic variation.…”

Section: Molecular Tagging Of Cbb Resistance Gene(s) /Or Qtl and Applmentioning

confidence: 99%

“…Parker (1985) transferred CBB resistance from tepary bean into P. vulgaris by hybridizing PI440795 (P. acutifolius) to 'ICA Pijao' (P. vulgaris) and crossing the F 1 progeny to 'Ex Rico 23 ' (P. vulgaris). CBB resistance in both OAC-88-1 line and OAC-Rex Cultivar are originated from PI 440795 (Scott & Michaels, 1992;Michaels et al, 2006). The VAX lines, VAX1, VAX2, VAX3, VAX4, VAX5 and VAX6, were developed from inter-specific cross between the common bean cultivar ICA Pijao and the tepary bean accession G40001 in 1989 by embryo rescue (Mejia-Jimenez et al, 1994;Singh & Munoz, 1999).…”

mentioning

confidence: 99%

Development and Application of Molecular Markers to Breed Common Bean (Phaseolus vulgaris L.) for Resistance to Common Bacterial Blight (CBB) — Current Status and Future Directions

Yu¹,

Shi²,

Zhang³

2012

Applied Photosynthesis

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“…The SCAR marker BC420 is associated with the genes that conditions CBB resistance in the line HR67. The navy bean cultivar 'OAC Rex', which also used tepary bean as the CBB resistance source, was registered in 2002 (Michaels et al 2006) as the first Canadian CBBresistant cultivar. The Simple Sequence Repeat (SSR) marker PVctt001 (Yu et al 2000b) on Pv04 was shown to be associated with resistance to CBB in the navy bean cultivar OAC Rex (Michaels et al 2006;Boersma et al 2014).…”

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confidence: 99%

Impact of common bacterial blight on the yield, seed weight and seed discoloration of different market classes of dry beans (Phaseolus vulgarisL.)

et al. 2015

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. 2015. Impact of common bacterial blight on the yield, seed weight and seed discoloration of different market classes of dry beans (Phaseolus vulgaris L.). Can. J. Plant Sci. 95: 703Á710. Common bacterial blight (CBB) is a seed-borne disease of dry bean (Phaseolus vulgaris L.), causing significant economic loss to growers due to reductions in seed yield and quality and the need to annually purchase disease-free seed. Over the past decade a number of breeding lines and cultivars with resistance to CBB have been developed in several bean market classes including navy, black and cranberry beans. A comparison of three susceptible navy bean cultivars and seven resistant navy, three black and one cranberry bean entries in Manitoba revealed that most resistant navy and black bean lines had significantly reduced the incidence of leaf symptoms and their mean yield losses were reduced to less than 17%, while those of the susceptible lines were as high as 36% under severe disease pressure. Only the weakly resistant navy bean cultivar HR67 and the cranberry bean line F4GR1 failed to substantially reduce CBB symptoms or show a yield advantage. The Simple Sequence Repeat (SSR) marker PVctt001 in combination with Sequence Characterized Amplified Region (SCAR) marker SU91 was associated with a low incidence of CBB symptoms and a reduced yield loss in five navy bean lines, but not in the cranberry bean line F4GR1. Disease symptoms on the pods in the resistant black and navy beans and seed discoloration of navy beans caused by CBB were also significantly reduced by resistance. Seed weights were reduced by 2.1Á4.7% in the susceptible cultivars, but there was only a slight or no decrease or no effect on the seed weight of the CBB-resistant lines and cultivars. Generally the magnitude of the reductions in yield was much greater than the impact on seed weight, which suggests that yield losses were caused by a combination of reduced seed weight and the number of seeds per plant. 'une diminution du rendement et d'une de´te´rioration de la qualite´des graines, ensuite, de la ne´cessite´d'acheter chaque anne´e des semences indemnes de la maladie. Au cours des dix dernie`res anne´es, plusieurs ligne´es ge´ne´alogiques et cultivars re´sistants a`la bruˆlure bacte´rienne ont vu le jour dans diverses classes marchandes, y compris celles du petit haricot rond blanc, du haricot noir et du haricot canneberge. La comparaison de trois cultivars sensibles de petit haricot rond blanc a`sept varie´te´s re´sistantes, et at rois cultivars re´sistants de haricot noir ainsi qu'a`un autre de haricot canneberge au Manitoba re´ve`le que la plupart des ligne´es re´sistantes de petit haricot rond blanc et de haricot noir pre´sentent des symptoˆmes foliaires nettement moins e´tendus et une baisse de rendement moyenne infe´rieure a`17 %, alors que la diminution du rendement peut atteindre jusqu'a`36 % chez les ligne´es sensibles, quand la pression de la maladie se fait e´leve´e. Seuls le cultivar de petit haricot rond blanc peu re´sistant HR67 et la ligne´e d...

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OAC Rex common bean

Cited by 53 publications

References 8 publications

The performance of dry bean cultivars with and without common bacterial blight resistance in field studies across Canada

The performance of dry bean cultivars with and without common bacterial blight resistance in field studies across Canada

Development and Application of Molecular Markers to Breed Common Bean (Phaseolus vulgaris L.) for Resistance to Common Bacterial Blight (CBB) — Current Status and Future Directions

Impact of common bacterial blight on the yield, seed weight and seed discoloration of different market classes of dry beans (Phaseolus vulgarisL.)

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