Local to continental-scale variation in fitness and heritability in common bean

Alice H. MacQueen, Colin K. Khoury, Phil Miklas, Phillip E. McClean, Juan M. Osorno, Bryan C. Runck, Jeffrey W. White, Michael B. Kantar, Patrick M. Ewing

Research output: Contribution to journalArticlepeer-review

Abstract

Selection during plant domestication and improvement often decreases genetic variation, including variation that confers adaptation to local conditions. We report spatial and temporal variation in fitness (seed yield), local adaptation, and segregating genetic variation within three races of common bean (Phaseolus vulgaris L.) with differing domestication histories and genetic diversities. Three-hundred and twenty-seven common bean genotypes had seed yield measured at subsets of 70 sites across North America between 1981 and 2015, as part of the Cooperative Dry Bean Nursery (CDBN). We estimated local adaptation using the metric home field advantage (HFA) and segregating genetic variation using heritability. The Durango and Mesoamerican races (Middle American genepool) had higher-than-expected (p =.002) HFA, equal to up to 34 yr of average yield gains. Surprisingly, Nueva Granada (Andean genepool) and Durango yields became more heritable across the study period (p <.001), while Mesoamerican heritability decreased (p <.001). Both metrics detected diversity loss corresponding to the timings of major historical gene introgressions. Local adaptation remains an agronomically important phenomenon within some common bean races. Common bean adaptation to new conditions will be most rapid at locations with large local adaptation benefits and high heritability.

Original languageEnglish (US)
Pages (from-to)767-779
Number of pages13
JournalCrop Science
Volume62
Issue number2
DOIs
StatePublished - Mar 1 2022

Bibliographical note

Funding Information:
The authors thank the many individuals who helped compile this dataset and provide feedback on drafts, as well as their funding sources. This research was partially funded by support from the National Science Foundation, Plant Genomes Research Program, Grant IOS‐1612262 to AHM.

Publisher Copyright:
© 2021 The Authors. Crop Science published by Wiley Periodicals LLC on behalf of Crop Science Society of America. This article has been contributed to by US Government employees and their work is in the public domain in the USA

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