Claim · model-written summary
Drought stress decreased grain yield in inbred lines by 43.5%.
Zea maysVerbatim
e0“drought stress significantly affected stay-green-related traits and led to a 43.5% decrease in grain yield in the inbred lines”
t0“maize”
e1“18 maize genotypes under two contrasting water availability conditions”
Title
Phenotyping maize stay green traits via in situ leaf hyperspectral reflectance sensing
Hany Elsharawy; Yan-Cheng Lin; Claude Urbany; et al. Smart Agricultural Technology 2026. doi:10.1016/j.atech.2026.101963
Other claims from this paper (11)
- Intervention effect Drought stress significantly affected stay-green traits.
- Association Higher stay-green visual scores were associated with higher grain dry yield.
- Association Stay-green traits correlated with vegetation indices, strongest for Chl_NDI at r = 0.91.
- Method / resource Water-absorption indices classified stay-green groups better than chlorophyll-absorption and other indices.
- Method / resource Water-absorption indices predicted SGVS using RF with R² = 0.79 ± 0.04.
- Method / resource Water-absorption indices predicted SGVS using RF with RMSE = 0.12 ± 0.01.
- Method / resource Model transferability varied across locations and years due to environmental and temporal shifts.
- Method / resource RF outperformed ANN and was more robust to inter-site and interannual variation.
- Method / resource Model performance degraded most in spectrally distinct environments or atypical seasons.
- Method / resource RDIS_3b, NDIS_2b and NDWI2 were the most important RF predictors across dataset arrangements.
- Recommendation The authors recommended multisite, multiyear calibration for generalizability.