Extending physiological screening beyond the flag leaf : a canopy-wide approach to Wheat resilience under contrasting field conditions
Material type:
ArticleLanguage: English Publication details: India : Indian Society of Agriculture Science and Technology for Rural Empowerment, 2025.Subject(s): Online resources:
In:
Current Innovation in Agriculture Science India : Indian Society of Agriculture Science and Technology for Rural Empowerment, 2025. v. 2, no. 2, p. 532-534Summary: Understanding wheat's response to drought requires more than focusing on the flag leaf. In this study, 72 elite genotypes were assessed under irrigated and drought field conditions in Obregón, Mexico, using high-resolution phenotyping tools to quantify physiological responses across the full canopy including flag, second, and third leaves. Parameters such as SPAD chlorophyll content, PRI, quantum yield, stomatal conductance, light interception, and pigment-specific spectral indices were measured, alongside soil moisture profiles. Results revealed distinctive patterns in each canopy layer, with lower leaves playing a supplementary yet measurable role in maintaining canopy function under stress. This study highlights the need for integrating full-canopy physiological evaluations into breeding strategies for climate resilience.
| Item type | Current library | Collection | Status | |
|---|---|---|---|---|
| Article | CIMMYT Knowledge Center: John Woolston Library | CIMMYT Staff Publications Collection | Available |
Peer review
Open Access
Understanding wheat's response to drought requires more than focusing on the flag leaf. In this study, 72 elite genotypes were assessed under irrigated and drought field conditions in Obregón, Mexico, using high-resolution phenotyping tools to quantify physiological responses across the full canopy including flag, second, and third leaves. Parameters such as SPAD chlorophyll content, PRI, quantum yield, stomatal conductance, light interception, and pigment-specific spectral indices were measured, alongside soil moisture profiles. Results revealed distinctive patterns in each canopy layer, with lower leaves playing a supplementary yet measurable role in maintaining canopy function under stress. This study highlights the need for integrating full-canopy physiological evaluations into breeding strategies for climate resilience.
Text in English
Click on an image to view it in the image viewer