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Frost Damage Index:The Antipode of Growing Degree Days
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作者 flavian tschurr Norbert Kirchgessner +4 位作者 Andreas Hund Lukas Kronenberg Jonas Anderegg Achim Walter Lukas Roth 《Plant Phenomics》 SCIE EI CSCD 2023年第4期757-766,共10页
Abiotic stresses such as heat and frost limit plant growth and productivity.Image-based field phenotyping methods allow quantifying not only plant growth but also plant senescence.Winter crops show senescence caused b... Abiotic stresses such as heat and frost limit plant growth and productivity.Image-based field phenotyping methods allow quantifying not only plant growth but also plant senescence.Winter crops show senescence caused by cold spells,visible as declines in leaf area.We accurately quantified such declines by monitoring changes in canopy cover based on time-resolved high-resolution imagery in the field.Thirty-six winter wheat genotypes were measured in multiple years.A concept termed"frost damage index"(FDI)was developed that,in analogy to growing degree days,summarizes frost events in a cumulative way.The measured sensitivity of genotypes to the FDI correlated with visual scorings commonly used in breeding to assess winter hardiness.The FDI concept could be adapted to other factors such as drought or heat stress.While commonly not considered in plant growth modeling,integrating such degradation processes may be key to improving the prediction of plant performance for future climate scenarios. 展开更多
关键词 WINTER ANALOGY integrating
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