Genetic analysis of photosynthesis‐related traits in faba bean (Vicia faba) for crop improvement

Increasing productivity through improvement of photosynthesis in faba bean breeding programmes requires understanding of the genetic control of photosynthesis‐related traits. Hence, we investigated the gene action of leaf area, gas exchange traits, canopy temperature, chlorophyll content, chlorophyl...

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Bibliographic Details
Published inPlant breeding Vol. 138; no. 6; pp. 761 - 769
Main Authors Khazaei, Hamid, Wach, Damian, Pecio, Alicja, Vandenberg, Albert, Stoddard, Frederick L.
Format Journal Article
LanguageEnglish
Published Berlin Wiley Subscription Services, Inc 01.12.2019
Subjects
Autosomal dominant inheritance
Biomass
Broad beans
Canopies
canopy temperature
Chlorophyll
chlorophyll fluorescence
Conductance
Crop improvement
Cultivars
Fluorescence
Gas exchange
generation mean analysis
Genetic analysis
Genetic control
Genetics
Inbreeding
Leaf area
Photosynthesis
Plant breeding
Productivity
Resistance
SPAD
Stomata
Stomatal conductance
Temperature
Vicia faba
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Summary:Increasing productivity through improvement of photosynthesis in faba bean breeding programmes requires understanding of the genetic control of photosynthesis‐related traits. Hence, we investigated the gene action of leaf area, gas exchange traits, canopy temperature, chlorophyll content, chlorophyll fluorescence parameters and biomass. We chose inbred lines derived from cultivars 'Aurora' (Sweden) and 'Mélodie' (France) along with an Andean accession, ILB 938, crossed them (Aurora/2 × Mélodie/2, ILB 938/2 × Aurora/2 and Mélodie/2 × ILB 938/2), and prepared the six standard generations for quantitative analysis (P1, P2, F1, F2, B1, and B2). Gene action was complex for each trait, involving additive and dominance gene actions and interactions. Additive gene action was important for SPAD, photosynthetic rate, stomatal conductance and Fv/Fm. Dominance effect was important for biomass production. It is suggested that breeders selecting for productivity can maximize genetic gain by selecting early generations for canopy temperature, SPAD and Fv/Fm, then later generations for biomass. The information on genetics of various contributing traits of photosynthesis will assist plant breeders in choosing an appropriate breeding strategy for enhancing productivity in faba bean.
ISSN:0179-9541
1439-0523
DOI:10.1111/pbr.12716