THE ASSOCIATION OF SIZE DIFFERENCES WITH SEED-COAT PATTERN AND PIGMENTATION IN PHASEOLUS VULGARIS

AbstractThe appearance of the seed is an important aspect of consumer preference for cowpea (Vigna unguiculata [L.] Walp.). Seed coat pattern in cowpea has been a subject of study for over a century. This study makes use of newly available resources, including mapping populations, a reference genome and additional genome assemblies, and a high-density single nucleotide polymorphism genotyping platform, to map various seed coat pattern traits to three loci, concurrent with the Color Factor (C), Watson (W), and Holstein (H) factors identified previously. Several gene models encoding proteins involved in regulating the later stages of the flavonoid biosynthesis pathway have been identified as candidate genes, including a basic helix-loop-helix gene (Vigun07g110700) for the C locus, a WD-repeat gene (Vigun09g139900) for the W locus and an E3 ubiquitin ligase gene (Vigun10g163900) for the H locus. A model of seed coat development, consisting of six distinct stages, is described to explain some of the observed pattern phenotypes.

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Significance of seed coat pattern inVigna radiata var.sublobata

Proceedings of the Indian Academy of Sciences - Section A Part 3 Mathematical sciences ◽

10.1007/bf03053223 ◽

1985 ◽

Vol 94 (4-6) ◽

pp. 561-566

Author(s):

S Ignacimuthu ◽

C R Babu

Keyword(s):

Seed Coat ◽

Coat Pattern ◽

Seed Coat Pattern

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Morphological characterization of lentil accessions: Qualitative characters

Bangladesh Journal of Botany ◽

10.3329/bjb.v41i2.13447 ◽

2013 ◽

Vol 41 (2) ◽

pp. 187-190

Author(s):

S Roy ◽

MA Islam ◽

A Sarker ◽

MR Ismail ◽

MY Rafii ◽

...

Keyword(s):

Seed Coat ◽

Flower Colour ◽

Morphological Characterization ◽

Normal Green ◽

Coat Pattern ◽

Wide Variability ◽

Qualitative Characters ◽

Stem Colour ◽

Seed Coat Pattern

Wide variability was observed for all the characters among 110 lentil accessions. Stem colour varied from normal green (45%) to purple (55%). Prominent and rudimentary tendrils were found in 60% and 40% of the accessions, respectively. Among the characters, flower colour showed the highest variation. White flower colour was observed in 49%, violet in 28%, white with blue veins in 20% accessions and the rest 3% were with blue flowers. Red cotyledon was shown by 90% while with yellow was shown by 10% of the accessions. Green, grey and brown seed coat was observed in 10, 66 and 24% of the accessions, respectively. Seed coat pattern with dots was found in 70% accessions and marbled seed coat pattern was shown by 15.5% while 14.5% did not show any seed coat pattern. DOI: http://dx.doi.org/10.3329/bjb.v41i2.13447 Bangladesh J. Bot. 41(2): 187-190, 2012 (December)

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Inheritance of seed condensed tannins and their relationship with seed-coat color and pattern genes in common bean (Phaseolus vulgaris L.)

Theoretical and Applied Genetics ◽

10.1007/s00122-009-1023-4 ◽

2009 ◽

Vol 119 (1) ◽

pp. 131-142 ◽

Cited By ~ 36

Author(s):

Gina Viviana Caldas ◽

Matthew W. Blair

Keyword(s):

Phaseolus Vulgaris ◽

Common Bean ◽

Seed Coat ◽

Condensed Tannins ◽

Coat Color ◽

Seed Coat Color ◽

Phaseolus Vulgaris L

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Induction of seed coat darkening in common beans (Phaseolus vulgaris L.) and the association with cooking time after storage

Australian Journal of Crop Science ◽

10.21475/ajcs.20.14.01.p1500 ◽

2020 ◽

pp. 21-27 ◽

Cited By ~ 2

Author(s):

Renata C. Alvares ◽

Helton S. Pereira ◽

Leonardo C. Melo ◽

Phillip N. Miklas ◽

Patrícia G. S. Melo

Keyword(s):

Phaseolus Vulgaris ◽

Genetic Correlation ◽

Seed Coat ◽

Uv Light ◽

Accelerated Aging ◽

Cooking Time ◽

Ambient Conditions ◽

Phaseolus Vulgaris L ◽

Dry Bean ◽

Cooking Times

Carioca is the most important edible dry bean (Phaseolus vulgaris L.) grown in Brazil. It represents the largest dry bean market class in the world. The seed coat of carioca beans will darken under adverse harvest conditions and with the increasing of storage time. In general, darkened seeds are associated with older seeds that suffer from prolonged cooking times. A relatively new ‘slow darkening’ trait is available in carioca that delays seed coat darkening under storage. However, its effect on cooking time is unknown. The objective of this work was to evaluate two induction methods of seed coat darkening and to examine the effect of slow darkening trait on cooking time after storage. Lines derived from four segregating populations resulting from crossings between cultivar BRSMG Madrepérola with slow seed coat darkening, and the parents BRS Estilo, BRS Cometa, BRS Notável and BRS Sublime with normal darkening were evaluated. An experiment inlcuding 220 lines, 55 per population and the five parents, in a 15x15 triple lattice was conducted in the winter growing season in Brasilia. Seed coat darkening and cooking time traits were evaluated. Two methods for inducing seed coat darkening were compared: an accelerated aging test using UV light for 72 hours, and an extended storage for 90 days under ambient conditions. The correlation between the induction methods ranged from 0.77 to 0.85 for the different populations indicating either method could be used to discriminate lines with normal versus slow darkening trait. The percentage of light-colored grain lines was identified by both induction methods of seed coat darkening ranged from 75 to 85.7% in the populations. The genetic correlation between seed coat darkening and cooking time varied from -0.06 to -0.48, indicating that in some populations there is no significant genetic correlation between seed coat darkening and cooking time. Thus, light colored grains are not indicative of low cooking time, when they are considered genotypes with genetic variation for the seed coat darkening.

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