Genetic Variability of Mineral Content in Different Grain Structures of Bean Cultivars from Mesoamerican and Andean Gene Pools

Beans (Phaseolus vulgaris L.) are an important source of proteins, carbohydrates, and micronutrients in the diets of millions of people in Latin America and Africa. Studies related to genetic variability in the accumulation and distribution of nutrients are valuable for biofortification programs, as there is evidence that the seed coat and embryo differ in the bioavailability of essential nutrients. In this study, we sought to evaluate the genetic variability of total mineral content in the grain and its constituent parts (seed coat, cotyledon, and embryonic axis) of bean genotypes from Mesoamerican and Andean centers of origin. Grain samples of 10 bean cultivars were analyzed for the content of proteins and minerals (Mg, Ca, K, P, Mn, S, Cu, B, Fe, and Zn) in the whole grains and seed coat, cotyledons, and embryonic axis tissues. Genetic variability was observed among the cultivars for protein content and all evaluated minerals. Moreover, differential accumulation of minerals was observed in the seed coat, cotyledons, and embryonic axis. Except for Ca, which accumulated predominantly in the seed coat, higher percentages of minerals were detected in the cotyledons. Furthermore, 100-grain mass values showed negative correlations with the contents of Ca, Mg, P, Zn, Fe, and Mn in whole grains or in the different grain tissues. In general, the Mesoamerican cultivars showed a higher concentration of minerals in the grains, whereas Andean cultivars showed higher concentrations of protein.

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Genetic variability of cooking time in dry beans (Phaseolus vulgaris L.) related to seed coat thickness and the cotyledon cell wall

Food Research International ◽

10.1016/j.foodres.2020.109886 ◽

2020 ◽

pp. 109886

Author(s):

Amber Bassett ◽

Sharon Hooper ◽

Karen Cichy

Keyword(s):

Cell Wall ◽

Phaseolus Vulgaris ◽

Genetic Variability ◽

Seed Coat ◽

Cooking Time ◽

Dry Beans ◽

Phaseolus Vulgaris L ◽

Cotyledon Cell

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Studies on Genetic Variability in Different Genotypes of French Bean (Phaseolus vulgaris L.)

International Journal of Life-Sciences Scientific Research ◽

10.21276/ijlssr.2016.2.3.1 ◽

2016 ◽

Vol 2 (3) ◽

Cited By ~ 1

Author(s):

Mukesh Topwal ◽

Geeta Gaur

Keyword(s):

Phaseolus Vulgaris ◽

Genetic Variability ◽

French Bean ◽

Phaseolus Vulgaris L

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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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