Towards Heat Tolerant Runner Bean (<i>Phaseolus coccineus</i> L.) by Utilizing Plant Genetic Resources
Svenja Bomers,
Eva M. Sehr,
Eveline Adam,
Philipp von Gehren,
Karin Hansel-Hohl,
Noémie Prat,
Alexandra Ribarits
Affiliations
Svenja Bomers
AGES Austrian Agency for Health and Food Safety, Division for Food Security, Institute for Seed and Propagating Material, Phytosanitary Service and Apiculture, Spargelfeldstraße 191, 1220 Vienna, Austria
Eva M. Sehr
AIT Austrian Institute of Technology GmbH, Center for Health & Bioresources, Konrad-Lorenz-Str. 24, 3430 Tulln, Austria
Eveline Adam
Saatzucht Gleisdorf Ges.mbH, Am Tieberhof 33, 8200 Gleisdorf, Austria
Philipp von Gehren
AGES Austrian Agency for Health and Food Safety, Division for Food Security, Institute for Seed and Propagating Material, Phytosanitary Service and Apiculture, Spargelfeldstraße 191, 1220 Vienna, Austria
Karin Hansel-Hohl
AIT Austrian Institute of Technology GmbH, Center for Health & Bioresources, Konrad-Lorenz-Str. 24, 3430 Tulln, Austria
Noémie Prat
AGES Austrian Agency for Health and Food Safety, Division for Food Security, Institute for Seed and Propagating Material, Phytosanitary Service and Apiculture, Spargelfeldstraße 191, 1220 Vienna, Austria
Alexandra Ribarits
AGES Austrian Agency for Health and Food Safety, Division for Food Security, Institute for Seed and Propagating Material, Phytosanitary Service and Apiculture, Spargelfeldstraße 191, 1220 Vienna, Austria
Climate change and its extreme heat waves affect agricultural productivity worldwide. In the cultivation of beans, heat stress during the reproductive phase may lead to complete crop failures, as recently was documented for runner bean (Phaseolus coccineus L.) in Austria. Developing better adapted varieties utilizing plant genetic resources is of utmost importance in such conditions. Our study aimed at identifying heat tolerant accessions and developing associated genetic markers for their application in marker assisted selection. For this, we assessed the genetic and phenotypic characteristics of 113 runner bean genotypes (101 of Austrian origin) grown in the glasshouse under heat stress conditions during two years. In particular three accessions showed a higher yield than the reference variety Bonela under heat stress in both years. The phenotypic data complemented with genetic data based on 1190 SNPs revealed high performing pure genotypes that may serve as good candidates to be included in breeding programs. In addition, the genome-wide association analysis resulted in 18 high quality SNPs that were subsequently used for the calculation of an estimated heat tolerance using the MassARRAY® system. Overall, our study represents first steps towards breeding heat tolerant runner bean to withstand global warming.
