Genetics of Seed Coat Color and Pattern in Common Bean

Bassett, Mark J.

doi:10.1002/9780470168028.ch8

Cited by 49 publications

(95 citation statements)

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“…Bassett (2007) published a comprehensive review of the genetics of seed coat color in common bean. There are, however, fewer specific genes identified for pest resistance, tolerance to abiotic stress, nutritional quality and cooking characteristics of common bean.…”

Section: Classical Mapping Effortsmentioning

confidence: 99%

Achievements and limitations of contemporary common bean breeding using conventional and molecular approaches

Beaver

Osorno

2009

Euphytica

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Common bean (Phaseolus vulgaris L.) improvement programs have been successful using conventional breeding methods to accomplish a wide array of important objectives. Specific achievements include the extension of range of adaptation of the crop, the development of cultivars with enhanced levels of disease and pest resistance and breeding lines that possess greater tolerance to drought. The most effective breeding method depends on the expression and inheritance of the trait to be selected and the target environment. Many bean improvement programs use molecular markers to facilitate cultivar development. In fact, several recent germplasm releases have used molecular markers to introgress and or pyramid major genes and QTL for disease resistance. Related species (P. coccineus and P. acultifolius) via interspecific hybridizations remain an important albeit long-term source for resistance to economically important diseases. Slow progress has been made in the improvement of traits such as adaptation to low soil fertility and tolerance to high levels of soluble Al in the soil using conventional breeding methods. The inability to directly measure root traits and the importance of genotype 9 environment interaction complicate the selection of these traits. In addition, symbiotic relationships with Rhizobium and mycorrhiza need to be taken into consideration when selecting for enhanced biological N fixation and greater or more efficient acquisition of soil P. Genomic examination of complex traits such as these should help bean breeders devise more effective selection strategies. As integration of genomics in plant breeding advances, the challenge will be to develop molecular tools that also benefit breeding programs in developing countries. Transgenic breeding methods for bean improvement are not well defined, nor efficient, as beans are recalcitrant to regeneration from cell cultures. Moreover, if issues related to consumer acceptance of GMOs cannot be resolved, traits such as herbicide tolerance in transgenic bean cultivars which would help farmers reduce production costs and decrease soil erosion will remain unrealized.

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Section: Classical Mapping Effortsmentioning

confidence: 99%

Achievements and limitations of contemporary common bean breeding using conventional and molecular approaches

Beaver

Osorno

2009

Euphytica

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“…Two hypotheses could fit the preliminary data. 'Dorado' may carry a second gene of the R-type having a different interaction with B, viz., an R-2 gene as tentatively proposed by Bassett (2007). Alternatively, 'Dorado' may carry a new allele at Rk with dominant expression of red color.…”

Section: Introductionmentioning

confidence: 95%

“…The genetics of seed coat color and pattern in common bean was recently reviewed by Bassett (2007). A reprint of this paper is available upon request.…”

Section: Introductionmentioning

confidence: 98%

“…The heterozygous genotype Rr expresses mottled seed coat colors, the actual hue depending on the allelic constitution of the other genes in the system. The interactions of R with the other genes controlling seed coat colors were reviewed and summarized by Prakken (1972) and Bassett (2007). The interaction of R with G B expresses the ''dark seal brown'' of Lamprecht (1947), which is the same as the ''dark (blackish) brown'' of Prakken (1972).…”

Section: Introductionmentioning

confidence: 99%

“…185). The senior author of this paper will provide upon request a color plate supplement to his review of the genetics of seed coat color and pattern in common bean (Bassett 2007), which gives 16 seed illustrations (after Voysest 2000) that include the Liborino market class and more typical color patterns for striped seed coats. Also, the color plate illustrates all the principal seed coat hues presented in this paper but not illustrated in Fig.…”

Section: Introductionmentioning

confidence: 99%

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A dominant gene for garnet brown seed coats at the Rk locus in ‘Dorado’ common bean and mapping Rk to linkage group 1

Bassett

Miklas

Caldas³

et al. 2010

Euphytica

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The color of the seed coats of 'Dorado' (Phaseolus vulgaris L.) is garnet brown (dark red kidney bean color) and differs from most other dry bean varieties in the Honduran red bean market class. A genetic investigation of the color of 'Dorado' (same as DOR364) and G19833 (Liborino market class) seed coats was conducted. Crosses with genetic tester stocks demonstrated that the gene for garnet brown (GB) in 'Dorado' was not allelic with the R gene for dominant red (oxblood) seed coat. An allelism test between the 'Dorado' gene for GB seed coat and the rk drv gene for recessive expression of GB demonstrated allelism. We propose the gene symbol for Rk r for the 'Dorado' GB seed coat color gene. Rk r expresses partial dominance over Rk, where Rk r /Rk expresses a paler and highly variable intermediate red color. The interactions of Rk r , rk drv , and c u are discussed. Segregation analysis in the mapping population made up of DOR364 (same as 'Dorado') 9 G19833 recombinant inbred lines showed that the Rk r gene mapped to linkage group 1. The new allele at Rk was located at a distance of 17 cM from the RFLP marker Bng130 with a LOD[ 3.0.

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