EurekaMag.com logo
+ Site Statistics
References:
53,623,987
Abstracts:
29,492,080
+ Search Articles
+ Subscribe to Site Feeds
EurekaMag Most Shared ContentMost Shared
EurekaMag PDF Full Text ContentPDF Full Text
+ PDF Full Text
Request PDF Full TextRequest PDF Full Text
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter
Follow on LinkedInFollow on LinkedIn

+ Translate

Genetic diversity among Latin American Andean and Mesoamerican common bean cultivars



Genetic diversity among Latin American Andean and Mesoamerican common bean cultivars



Crop Science 34(4): 1100-1110



Knowledge of the relationship among existing crop cultivars helps broaden the genetic base of new cultivars, facilitates deployment of useful genes, reduces genetic vulnerability, and maximizes the use of available germplasm resources. In this study, our objective was to analyze the genetic base of common bean (Phaseolus vulgaris L.) cultivars released in Latin America from the onset of breeding activities until 1993. Each of the 203 cultivars of hybrid origin and their 194 ancestors were classified into one of six racial groups: Mesoamerica, Durango, Jalisco, Nueva Granada, Peru, or Chile. Genetic diversity was assessed, based on the pedigree, through the coefficient of parentage (r). The groups of 130 cultivars of Race Mesoamerica and 46 cultivars of Race Nueva Granada both received 79 and 76% of their genes, respectively, from ancestors of their same race. Furthermore, a 55% genetic contribution in the case of Race Nueva Granada cultivars and 41% for Race Mesoamerica was attributed to 12 and 10 ancestors of the same race, respectively. The 18 cultivars of Race Durango received 18% of their genes from Race Nueva Granada; the genetic contribution from their same race was as much as 43%. The three cultivars of Race Chile received half of their genes from Race Chile; the other half came from Races Nueva Granada, Mesoamerica, and Durango. Races Jalisco and Peru received little or no improvement and were used little in the improvement of cultivars of other races. When cultivars were grouped by different time periods, the increasing trend of using interracial hybridizations to broaden the genetic base of cultivars of Races Mesoamerica and Nueva Granada became evident.

(PDF 0-2 workdays service: $29.90)

Accession: 002390710

Download citation: RISBibTeXText



Related references

Genetic control of incompatibility in crosses of Andean and Mesoamerican common bean cultivars. Ciencia E Agrotecnologia: 3, 978-980, 2008

Genetic diversity of rhizobia in a Brazilian oxisol nodulating Mesoamerican and Andean genotypes of common bean (Phaseolus vulgarisL.). World Journal of Microbiology and Biotechnology 27(3): 643-650, 2011

Genetic variation for grain quality and nutritional characteristics in common bean (Phaseolus vulgaris L.) cultivars of Mesoamerican and Andean origin. Annual report9(39): 258-259, 1996

Structure of genetic diversity among common bean (Phaseolus vulgaris L.) varieties of Mesoamerican and Andean origins using new developed microsatellite markers. Genetic resources and crop evolution 54(8): 1747-1762, 2007

Nodulation capacity and combinatory ability between cultivars from Mesoamerican and Andean genic pools of common bean (Phaseolus vulgaris L.). Annual report1(41): 133-134, 1998

Genetic base of Andean red-seeded bean cultivars of Latin America. Annual report of the Bean Improvement Cooperative6(36): 24-25, 1993

Correspondence between the genetic diversity of Latin American and African isolates of Phaeoisariopsis griseola, the angular leaf spot pathogen of the common bean. Phytopathology 87(6 SUPPL ): S76, 1997

Nodulation in Andean and Mesoamerican cultivars of dry bean. Pesquisa Agropecuaria Brasileira 37(8): 1145-1150, 2002

Epistasis in an Andean × Mesoamerican cross of common bean. Euphytica 186(3): 755-760, 2012

Inheritance of photoperiod response in Andean and Mesoamerican common bean. Crop Science 33(5): 977-984, 1993

Resistance of Andean and Mesoamerican common bean genotypes to Phaeoisariopsis griseola. Annual report 48(48): 88-89, 2005

Performance of common bean families from crossing of Andean and Mesoamerican lines. Annual report: no 47 299-300, 2004

Virulence and molecular diversity within Colletotrichum lindemuthianum isolates from Andean and Mesoamerican bean varieties and regions. European Journal of Plant Pathology 110(3): 253-263, 2004

Physiological traits associated with drought resistance in Andean and Mesoamerican genotypes of common bean (Phaseolus vulgarisL.). Euphytica 210(1): 17-29, 2016

Domestication patterns in common bean (Phaseolus vulgaris L.) and the origin of the Mesoamerican and Andean cultivated races. Tag. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik 110(3): 432-444, 2005