Improvement of Medium-Seeded Race Durango Cultivars

Brick, Mark A.; Grafton, K.F.

doi:10.1007/978-94-015-9211-6_9

Cited by 25 publications

(27 citation statements)

References 97 publications

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“…1,[11][12][13] The pathogen has also been reported in Algeria, Asia, Australia, Egypt, Europe, Ethiopia, Kenya, Lesotho, Malawi, Mauritius, Morocco, New Zealand, Tanzania, Tunisia, Uganda and Zimbabwe. 14,15 Although Melis 16 reported the incidence of BBS as being 'only occasional' in South Africa, the disease was first described in 1994 17 when 100% incidence on the cultivar Bonus was recorded.…”

Section: Introductionmentioning

confidence: 97%

“…syringae (Pss), Van Hall, is an important bacterial disease of common bean (Phaseolus vulgaris L.) globally, including in South Africa. [1][2][3] The disease is seed-borne and mainly infects foliage and to a lesser extent pods. It is prevalent where dry bean monocropping is practised and spreads through seed transmission, wind and human movement from infected to uninfected areas.…”

Section: Introductionmentioning

confidence: 99%

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Distribution and severity of bacterial brown spot on dry beans in South Africa: An update

Muedi¹,

Fourie²,

McLaren³

2015

S. Afr. J. Sci.

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Bacterial brown spot (BBS) of common bean (Phaseolus vulgaris) is a seed-borne bacterial disease caused by Pseudomonas syringae pv. syringae (Pss). Dry bean is an important field crop in South Africa and all commercially available South African dry bean cultivars are susceptible to BBS. The aim of this study was to determine the current distribution and severity of BBS in the dry bean production areas of South Africa. We surveyed 31 locations in five provinces. Disease severity was evaluated on selected plots on a 0–9 scale in four different farming systems: commercial and subsistence farms and strip and national cultivar trials. Leaves with typical BBS symptoms were harvested and transferred to the laboratory. Bacteria were isolated following standard procedure using King’s B medium. Identification of pure isolates was done using physiological and biochemical techniques. Incidence and severity values were used to calculate a disease index. BBS was observed in 88% of locations. BBS incidence was recorded in 54% to 100% of all the farming systems surveyed during the 2008/2009 and 2010/2011 seasons combined. BBS was more severe in the strip and national cultivar trials than on subsistence and commercial farms during the 2008/2009 season and more severe on the commercial farm and in national cultivar trials than on subsistence farms and strip trials during the 2010/2011 season. Findings of this study signal the importance of developing BBS-resistant dry bean cultivars for South Africa.

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Section: Introductionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

Distribution and severity of bacterial brown spot on dry beans in South Africa: An update

Muedi¹,

Fourie²,

McLaren³

2015

S. Afr. J. Sci.

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“…Acosta-Gallegos et al (1995b and Singh et al (1993) combined resistance to angular leaf spot, anthracnose, BCMV, and rust into high-yielding bayo, black, ojo de cabra, and pinto bean for Mexican highlands. Brick et al (2001), Coyne et al (2000), Kelly et al (1999aKelly et al ( , 1999d, and Myers et al (2001aMyers et al ( , 2001b, among others (see Beaver et al, 2003;Brick and Grafton, 1999;Singh, 2001aSingh, , 2001b, combined BCMV and rust resistance into great northern and pinto beans. Coyne (1999) lists dry bean cultivars released in the U.S.…”

Section: Race Durango Cultivarsmentioning

confidence: 94%

“…The I resistance allele was introgressed into great northern (Coyne et al, 2000;Kelly et al, 1999d;Myers et al, 2001b), 'flor de mayo' (Acosta-Gallegos et al, 1995a), and pinto (Brick et al, 2001;Myers et al, 2001a) genotypes. Kelly et al (1995) discussed strategies for pyramiding BCMV and BCMNV resistance alleles.…”

Section: Bcmv and Bcmnv Resistancementioning

confidence: 95%

“…Readers interested in specific examples of introgression of favorable alleles and QTL between market classes, races, and gene pools of common bean cultivars should refer to , Brick and Grafton (1999), Kelly (2001), , and Singh (2001a). Only general strategies used and problems encountered will be briefly discussed here.…”

Section: Introgression Between and Within Cultivated Common Bean Genementioning

confidence: 99%

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