TY - JOUR

T1 - Phenotypic variation in photosynthetic traits in wheat grown under field versus glasshouse conditions

T2 - Mismatch between field versus glasshouse-grown plants

AU - Sales, CRG

AU - Molero, Gemma

AU - Evans, John

AU - Taylor, Samuel

AU - Joynson, Ryan

AU - Furbank, Robert

AU - Hall, Anthony

AU - Carmo-Silva, Elizabete

N1 - This is a pre-copy-editing, author-produced PDF of an article accepted for publication in Journal of Experimental Botany following peer review. The definitive publisher-authenticated version Cristina R G Sales, Gemma Molero, John R Evans, Samuel H Taylor, Ryan Joynson, Robert T Furbank, Anthony Hall, Elizabete Carmo-Silva, Phenotypic variation in photosynthetic traits in wheat grown under field versus glasshouse conditions, Journal of Experimental Botany, Volume 73, Issue 10, 23 May 2022, Pages 3221–3237 is available online at: https://academic.oup.com/jxb/article/73/10/3221/6546621

PY - 2022/5/23

Y1 - 2022/5/23

N2 - Recognition of the untapped potential of photosynthesis to improve crop yields has spurred research to identify targets for breeding. The CO2-fixing enzyme Rubisco is characterised by a number of inefficiencies and frequently limits carbon assimilation at the top of the canopy, representing a clear target for wheat improvement. Two bread wheat lines with similar genetic backgrounds and contrasting in vivo maximum carboxylation activity of Rubisco per unit leaf nitrogen (Vc,max,25/Narea) determined using high throughput phenotyping methods were selected for detailed study from a panel of 80 spring wheat lines. Detailed phenotyping of photosynthetic traits in the two lines using glasshouse-grown plants showed no difference in Vc,max,25/Narea determined directly via in vivo and in vitro methods. Detailed phenotyping of glasshouse-grown plants of the 80 wheat lines also showed no correlation between photosynthetic traits measured via high throughput phenotyping of field-grown plants. Our findings suggest that the complex interplay between traits determining crop productivity and the dynamic environments experienced by field-grown plants needs to be considered when designing strategies for effective wheat crop yield improvement when breeding for particular environments

AB - Recognition of the untapped potential of photosynthesis to improve crop yields has spurred research to identify targets for breeding. The CO2-fixing enzyme Rubisco is characterised by a number of inefficiencies and frequently limits carbon assimilation at the top of the canopy, representing a clear target for wheat improvement. Two bread wheat lines with similar genetic backgrounds and contrasting in vivo maximum carboxylation activity of Rubisco per unit leaf nitrogen (Vc,max,25/Narea) determined using high throughput phenotyping methods were selected for detailed study from a panel of 80 spring wheat lines. Detailed phenotyping of photosynthetic traits in the two lines using glasshouse-grown plants showed no difference in Vc,max,25/Narea determined directly via in vivo and in vitro methods. Detailed phenotyping of glasshouse-grown plants of the 80 wheat lines also showed no correlation between photosynthetic traits measured via high throughput phenotyping of field-grown plants. Our findings suggest that the complex interplay between traits determining crop productivity and the dynamic environments experienced by field-grown plants needs to be considered when designing strategies for effective wheat crop yield improvement when breeding for particular environments

KW - field

KW - glasshouse

KW - hyperspectral reflectance

KW - photosynthesis

KW - Rubisco

KW - Triticum aestivum

U2 - 10.1093/jxb/erac096

DO - 10.1093/jxb/erac096

M3 - Journal article

VL - 73

SP - 3221

EP - 3237

JO - Journal of Experimental Botany

JF - Journal of Experimental Botany

SN - 0022-0957

IS - 10

ER -