Title
Genetic diversity and genome-wide association analysis of cooking time in dry bean (Phaseolus vulgaris L.)
Date Issued
24 August 2015
Access level
metadata only access
Resource Type
journal article
Author(s)
Michigan State University
Publisher(s)
Springer Verlag
Abstract
Key message: Fivefold diversity for cooking time found in a panel of 206Phaseolus vulgarisaccessions. Fastest accession cooks nearly 20 min faster than average.   SNPs associated with cooking time on Pv02, 03, and 06. Abstract: Dry beans (Phaseolus vulgaris L.) are a nutrient dense food and a dietary staple in parts of Africa and Latin America. One of the major factors that limits greater utilization of beans is their long cooking times compared to other foods. Cooking time is an important trait with implications for gender equity, nutritional value of diets, and energy utilization. Very little is known about the genetic diversity and genomic regions involved in determining cooking time. The objective of this research was to assess cooking time on a panel of 206 P. vulgaris accessions, use genome- wide association analysis (GWAS) to identify genomic regions influencing this trait, and to test the ability to predict cooking time by raw seed characteristics. In this study 5.5-fold variation for cooking time was found and five bean accessions were identified which cook in less than 27 min across 2 years, where the average cooking time was 37 min. One accession, ADP0367 cooked nearly 20 min faster than average. Four of these five accessions showed close phylogenetic relationship based on a NJ tree developed with ~5000 SNP markers, suggesting a potentially similar underlying genetic mechanism. GWAS revealed regions on chromosomes Pv02, Pv03, and Pv06 associated with cooking time. Vis/NIR scanning of raw seed explained 68 % of the phenotypic variation for cooking time, suggesting with additional experimentation, it may be possible to use this spectroscopy method to non-destructively identify fast cooking lines as part of a breeding program.
Start page
1555
End page
1567
Volume
128
Issue
8
Language
English
OCDE Knowledge area
Genética, Herencia Agricultura
Scopus EID
2-s2.0-84931565996
PubMed ID
Source
Theoretical and Applied Genetics
ISSN of the container
00405752
Sponsor(s)
This work was supported in part by funding from the Norman Borlaug Commemorative Research Initiative (US Agency for International Development), by the US Department of Agriculture, Agricultural Research Service. The contents of this publication do not necessarily reflect the views or policies of the US Department of Agriculture, nor does mention of trade names, commercial products, or organizations imply endorsement by the US Government. We also thank Yasmin Salat, Dennis Katuuramu, and Scott Shaw for assistance with cooking.
Sources of information: Directorio de Producción Científica Scopus