QTL Conferring Resistance and Avoidance to White Mold in Common Bean

By J. Kolkman, J. Kelly. Crop science, 2003

119 citations recorded by the source corpus.

White mold, caused by Sclerotinia sclerotiorum (Lib.) De Bary, is a serious fungal disease that negatively affects production of common bean (Phaseolus vulgaris L.). Resistance to white mold in common bean is complexly inherited and comprised of physiological resistance and avoidance mechanisms. The objectives of this research were to discover quantitative trait loci (QTL) conferring resistance to white mold in navy beans, to determine if a multitrait bulking strategy was an efficient approach for locating QTL conferring resistance to white mold, and to identify agronomic traits associated with QTL for white mold avoidance in the field. A 98 F 3 -derived Bunsi/Newport population was evaluated in three environments for resistance to white mold and agronomic traits. A 28 recombinant inbred line population derived from a Huron/Newport cross was evaluated for the resistance and yield in four environments and was used to confirm marker associations. Marker BC20.1800 on B2 was associated with disease severity index (DSI) (12%) across environments, and was confirmed in the second population. Markers linked to QTL were also detected on B7 for DSI (17%), resistance to oxalate (16%), yield (37%), as well as days to flowering (14%), branching pattern (9%), lodging (9%) and seed size (20%). Growth habit unexpectedly mapped to B7, and represents a novel source of determinacy in navy bean. Multiple-trait bulking based on low DSI, high yield, and 40 to 45 d to flowering versus high DSI, low yield, and 40 to 45 d to flowering effectively identified more markers linked to QTL for resistance to white mold than did bulks based on low and high DSI alone. Selection based on QTL that confer resistance to white mold, such as the Bunsi-derived QTL located on B2 and B7 of the bean genome, combined with certain desirable agronomic traits offers the opportunity to develop resistant cultivars and improve our understanding of resistance to white mold in common bean.

Subfields: Plant Science

View Paper: https://www.semanticscholar.org/paper/7cb2d0f9f77a208ea8a218c16fc2c4136902d8f6

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In Plant Science

1. J. Beaver
2. J. Osorno
3. H. Schwartz
4. J. Kelly
5. S. Singh
6. Phillip N. Miklas
7. M. Blair
8. P. Gepts

Citations in the corpus

• Tagging and mapping of genes and QTL and molecular marker-assisted selection for traits of economic importance in bean and cowpea (2003, background): “identified as the site for white mold resistance in two other genetically distinct recombinant inbred populations (Park et al., 2001; Kolkman and Kelly, 2003).”
• Quantitative Trait Loci Associated with Drought Tolerance in Common Bean (2014, background): “Since these chromosomes have been independently reported to carry growth habit and phenology QTL as well as growth habit candidate genes in various studies (Blair et al., 2012; de Campos et al., 2011; Kolkman and Kelly, 2003; Kwak et al., 2008; Repinski et al., 2012; Tar’an et al., 2002), the identi”
• Towards marker‐assisted selection in pulses: a review (2011, background): “(2004) Pigeon pea Resistance to Fusarium wilt Gene RAPD – Kotresh et al. (2006) Plant type 2 Genes RAPD 8.”
• Sclerotinia sclerotiorum (Lib.) de Bary: biology and molecular traits of a cosmopolitan pathogen. (2006, background): “QTLs for resistance to S. sclerotiorum have been reported in several other important crops such as sunflower, common bean and oilseed rape (Arahana et al., 2001; Bert et al., 2004; Kolkman and Kelly, 2003; Miklas et al., 2003; Zhao and Meng, 2003).”
• Genomics of Phaseolus Beans, a Major Source of Dietary Protein and Micronutrients in the Tropics (2008, background): “Selective (Miklas et al. 1996, 2003a; Kolkman and Kelly 2003) and whole genome mapping (Jung et al.”
• Characterization of white mold disease avoidance in common bean (2013, background): “The mapping population superscripts are usually only included within the text at first mention.]”
• Breeding Common Bean for Resistance to White Mold: A Review (2013, background): “However, not all genotypes with Type I or Type II growth habit avoid white mold disease equally and some are highly susceptible, for example, ‘Benton’ (Soule et al., 2011), ‘Newport’ (Kelly et al., 1995; Kolkman and Kelly, 2003), and ‘Raven’ (Ender and Kelly 2005; Ender et al., 2008; Kelly et al., 1”
• Achievements and Challenges in Legume Breeding for Pest and Disease Resistance (2015, background): “It may also cause stem or pod rot in several legumes under cool or warmer weather, respectively (Kolkman and Kelly, 2003).”
• Achievements and limitations of contemporary common bean breeding using conventional and molecular approaches (2009, background): “2005); rust (Pastor-Corrales 2003); white mold (Maxwell et al. 2007; Schwartz et al. 2006; Ender and Kelly 2005; Kolkman and Kelly 2003; Miklas et al. 2001) and ashy stem blight (Mayek-Pérez et al.”