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- Title
EFFECT OF SHADING BASED ON FUNCTIONAL LEAF SATURATED LIGHT INTENSITY ON THE YIELD AND WATER CONSUMPTION OF WINTER WHEAT (TRITICUM AESTIVUM L.).
- Authors
Y. B., SHEN; J. F., ZHANG; T., LI
- Abstract
This study investigated diminished sunshine impact on crop growth and water consumption. A two-year pot experiment was conducted using the winter wheat variety “XINONG 979”. Starting from the jointing stage, a control and four shading treatments were established based on the leaf saturation light intensity (LSP) of a fully light exposed functional leaf in each growth stage: (1) LSP − 500 (S1); (2) LSP − 200 (S2); (3) LSP + 100 (S3); (4) LSP + 400 μmol m−2 s−1 (S4), and; (5) control (CK) without shading. Diurnal gas exchange and evapotranspiration were measured since jointing stage. S2, S3, and S4 showed an increase in yield and water use efficiency (WUE) under comparison to CK, with the increase in S3 being significant. Evapotranspiration in S4 increased whereas it significantly decreased in other treatments. The daily evapotranspiration of treatment S4 increased after heading to flowering stage. The net photosynthetic rate, stomatal conductance, and transpiration rate of the functional leaves of S4 showed increases at different times. The instantaneous and intrinsic WUE of functional leaves increased between 12:00–14:00. There were different shading effects on the functional leaves, whole wheat water consumption, and WUE between different shading treatments.
- Subjects
WINTER wheat; WATER consumption; WHEAT; WATER efficiency; LEAF anatomy; LIGHT intensity
- Publication
Applied Ecology & Environmental Research, 2021, Vol 19, Issue 4, p3303
- ISSN
1589-1623
- Publication type
Article
- DOI
10.15666/aeer/1904_33033321