Physiological and genetic characterization of heat stress effects in a common bean RIL population.

Publication Overview
TitlePhysiological and genetic characterization of heat stress effects in a common bean RIL population.
AuthorsVargas Y, Mayor-Duran VM, Buendia HF, Ruiz-Guzman H, Raatz B
TypeJournal Article
Journal NamePloS one
CitationVargas Y, Mayor-Duran VM, Buendia HF, Ruiz-Guzman H, Raatz B. Physiological and genetic characterization of heat stress effects in a common bean RIL population.. PloS one. 2021; 16(4):e0249859.


Heat stress is a major abiotic stress factor reducing crop productivity and climate change models predict increasing temperatures in many production regions. Common bean (Phaseolus vulgaris L.) is an important crop for food security in the tropics and heat stress is expected to cause increasing yield losses. To study physiological responses and to characterize the genetics of heat stress tolerance, we evaluated the recombinant inbred line (RIL) population IJR (Indeterminate Jamaica Red) x AFR298 of the Andean gene pool. Heat stress (HS) conditions in the field affected many traits across the reproductive phase. High nighttime temperatures appeared to have larger effects than maximum daytime temperatures. Yield was reduced compared to non-stress conditions by 37% and 26% in 2016 and 2017 seasons, respectively. The image analysis tool HYRBEAN was developed to evaluate pollen viability (PolVia). A significant reduction of PolVia was observed in HS and higher viability was correlated with yield only under stress conditions. In susceptible lines the reproductive phase was extended and defects in the initiation of seed, seed fill and seed formation were identified reducing grain quality. Higher yields under HS were correlated with early flowering, high pollen viability and effective seed filling. Quantitative trait loci (QTL) analysis revealed a QTL for both pod harvest index and PolVia on chromosome Pv05, for which the more heat tolerant parent IJR contributed the positive allele. Also, on chromosome Pv08 a QTL from IJR improved PolVia and the yield component pods per plant. HS affected several traits during the whole reproductive development, from floral induction to grain quality traits, indicating a general heat perception affecting many reproductive processes. Identification of tolerant germplasm, indicator traits for heat tolerance and molecular tools will help to breed heat tolerant varieties to face future climate change effects.

This publication contains information about 32 features:
Feature NameUniquenameType
Days to floweringqDFFL.IJR/AFR298.LG01.HS16QTL
Days to floweringqDFFL.IJR/AFR298.LG01.HSCQTL
Days to floweringqDFFL.IJR/AFR298.LG01.NS18QTL
Days to floweringqDFFL.IJR/AFR298.LG04.HS16QTL
Days to floweringqDFFL.IJR/AFR298.LG04.HSCQTL
Days to floweringqDFFL.IJR/AFR298.LG09.HS16QTL
Days to floweringqDFFL.IJR/AFR298.LG09.HSCQTL
Harvest indexqHI.IJR/AFR298.LG05.HS16QTL
Harvest indexqHI.IJR/AFR298.LG05.HSCQTL
Harvest indexqHI.IJR/AFR298.LG05.NS17QTL
Harvest indexqHI.IJR/AFR298.LG10.NS17QTL
Pods with shriveled seedsqPDSHR.IJR/AFR298.LG01.HS16QTL
Pods with shriveled seedsqPDSHR.IJR/AFR298.LG01.HSCQTL
Percent empty podqPEP.IJR/AFR298.LG01.HS16QTL
Percent empty podqPEP.IJR/AFR298.LG01.HSCQTL
Pod number per plantqPNB.IJR/AFR298.LG01.HSCQTL
Pod number per plantqPNB.IJR/AFR298.LG01.NS17QTL
Pod number per plantqPNB.IJR/AFR298.LG04.HS16QTL
Pod number per plantqPNB.IJR/AFR298.LG08.HS16QTL
Pollen viabilityqPOLVIA.IJR/AFR298.LG05.HS16QTL
Pollen viabilityqPOLVIA.IJR/AFR298.LG05.HSCQTL
Pollen viabilityqPOLVIA.IJR/AFR298.LG08.HS17QTL
Seed number per podqSDNB.IJR/AFR298.LG01.HS16QTL
Seed number per podqSDNB.IJR/AFR298.LG01.HS16.2QTL
Seed number per podqSDNB.IJR/AFR298.LG01.HSCQTL


This publication contains information about 1 projects:
Project NameDescription
This publication contains information about 1 maps:
Map Name
This publication contains information about 3 stocks:
Stock NameUniquenameType
Indeterminate Jamaica RedIndeterminate Jamaica Redaccession
Additional details for this publication include:
Property NameValue
Publication ModelElectronic-eCollection
Publication Date2021
Journal AbbreviationPLoS One
Language Abbreng
Publication TypeJournal Article
Journal CountryUnited States