Seed Coat Shininess in Phaseolus vulgaris: Rescuing a Neglected Trait by Its Screening on Commercial Lines and Landraces

Konzen, Enéas Ricardo; Tsai, Siu Mui

doi:10.5539/jas.v6n8p113

Cited by 15 publications

(29 citation statements)

References 43 publications

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“…In addition, this can be a long and slow procedure when the sample size is large, and samples differ in small degree with higher probability of human error. With advancements in technology, colorimeters and Computer vision provide more accurate information on seed coat color, all with minimal costs (Bassett et al, 2002;Ozturk et al, 2009;Cobb et al, 2013;Konzen and Tsai, 2014). The whole process can also be automated, enabling the analysis of a great number of samples in short time.…”

Section: Resultsmentioning

confidence: 99%

How does Computer vision compare to standard colorimeter in assessing the seed coat color of common bean (Phaseolus vulgaris L.)?

Varga¹,

Vidak²,

Ivanović³

et al. 2019

j. cent. eur. agric.

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Common bean (Phaseolus vulgaris L.) exhibits a wide range of seed coat colors and this morphological trait is widely used in cultivar identification and assessment of diversity within this species. With an advancement in technology and informatics, new methods of assessing seed color are emerging in addition to traditionally used visual observation. Due to a great variety of color measuring techniques, the evaluation of the agreement between methods is needed prior to using the methods interchangeably. Seed coat color in terms of CIE L*a*b* color coordinates of 100 common bean accessions belonging to five mono-colored landraces was assessed using two methods, colorimeter and Computer vision. The percentage difference between the two methods across all samples for L* color coordinate was 5.81%, for a* color coordinate 23.32% and for b* color coordinate 44.44%. According to Bland-Altman difference plot there is a considerable lack of agreement between the two methods. However, using stepwise discriminant analysis revealed that colorimeter method correctly classified 97% of accessions into their respective landrace, while the classification success of the Computer vision was 99%.

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Section: Resultsmentioning

confidence: 99%

How does Computer vision compare to standard colorimeter in assessing the seed coat color of common bean (Phaseolus vulgaris L.)?

Varga¹,

Vidak²,

Ivanović³

et al. 2019

j. cent. eur. agric.

View full text Add to dashboard Cite

show abstract

“…In regard to brightness, beans with a shiny seed coat absorb water more slowly and therefore take longer to cook than those with an opaque seed coat (Konzen and Tsai, 2014); therefore, the former are disregarded in the cultivar selection process.…”

Section: Resultsmentioning

confidence: 99%

<b>Interrelationship between morphological, agronomic and molecular characteristics in the analysis of common bean genetic diversity

et al. 2018

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ABSTRACT.The present study aimed to analyze, through 12 morpho-agronomic traits and 18 micro satellite loci, the genetic diversity in 17 common bean accessions from the Bean Germplasm Bank of the Center for Applied Agricultural Research of the State University of Maringá (BGF/Nupagri/UEM), in Paraná State, Brazil. Genetic diversity was assessed by joint analysis of phenotypic and genotypic characteristics using the Genetics platform of SAS software. To that end, a dissimilarity matrix was constructed based on the Jaccard index. This was used to generate a dendrogram via UPGMA hierarchical clustering, validated by multidimensional scaling and nonorthogonal principal components analysis. Based on genetic diversity analysis, the accessions were clustered into two large groups: one consisting of 11 accessions of Andean origin and the other containing six Mesoamerican accessions. The 17 accessions from the BGF/Nupagri/UEM were found to be an important source of genetic variability for inclusion in common bean breeding programs, contributing to the development of cultivars with desirable agronomic characteristics.

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“…Interestingly, at one of the farms, from a fresh sample of SAF seeds collected (approximately 1 kg), only 10 seeds presented the SAB pattern ( Figure 1A shows the phenotypes of SAB and SAF). Seeds with the SAB pattern were crossed to the SAF pattern and the reciprocal as well, and populations were advanced to F 4 generation, revealing consistent patterns of segregation for seed glossiness and color [12].…”

Section: The Serro Azul Landrace: Parental Genotypes and Segregating mentioning

confidence: 99%

“…Serro Azul shows considerable morphological variability, revealing different types of seeds. It shows high genetic variation for seed colors and patterns [12], disease and insect resistance and nodulation ability [11,13], which are among the main aspect studies in breeding programs of common bean.…”

Section: Introductionmentioning

confidence: 99%

Genetic Variation of Landraces of Common Bean Varying for Seed Coat Glossiness and Disease Resistance: Valuable Resources for Conservation and Breeding

Konzen¹,

Tsai²

2018

Rediscovery of Landraces as a Resource for the Future

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In this chapter, we outline the significance of landraces of common bean (Phaseolus vulgaris L.) for unraveling novel morphological, biochemical and genetic variation that could be integrated to breeding programs, related to seed coat color and glossiness and disease resistance. Moreover, we emphasize how important the conservation of such genetic resources is in small-farming areas, the prevailing system for bean cultivation. A particular Brazilian landrace referred as Serro Azul by local farmers is highlighted to show new evidences of the genetic control of seed glossiness in common bean and how it implicates in the seed protection against diseases and insects. Moreover, new findings presented here give insights into a remarkable anthracnose resistance of one of the variants of Serro Azul, which also presents seed coat glossiness. The potential benefits for human health after consuming beans with glossy seed coat are also discussed. This is one among the various landraces that need better understanding for strengthening the knowledge of the genetic diversity of common bean. Such knowledge is important for conducting conservation actions and performing new crosses for providing genetic materials with desirable combinations for farmers, breeders and consumers.

show abstract

Seed Coat Shininess in Phaseolus vulgaris: Rescuing a Neglected Trait by Its Screening on Commercial Lines and Landraces

Cited by 15 publications

References 43 publications

How does Computer vision compare to standard colorimeter in assessing the seed coat color of common bean (Phaseolus vulgaris L.)?

How does Computer vision compare to standard colorimeter in assessing the seed coat color of common bean (Phaseolus vulgaris L.)?

<b>Interrelationship between morphological, agronomic and molecular characteristics in the analysis of common bean genetic diversity

Genetic Variation of Landraces of Common Bean Varying for Seed Coat Glossiness and Disease Resistance: Valuable Resources for Conservation and Breeding

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