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Journal Article

Artículo de revista

Injury to Photosynthesis and Productivity from Interaction Between High Temperature and Drought During Maturation of Wheat  [2005]

Nazeer H. Shah ; Gary M. Paulsen ;

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The present study aims to compare effects of high temperature and drought and to ascertain their interactions on photosynthesis and productivity of wheat. Len plants were uniformly grown in silt-loam soil [surface horizon of Ivan and Kennebec silt loams (fine-silty, mixed, mesic cumulic Hapudolls)] until anthesis and then subjected to day/night temperatures of 15/10, 25/20, or 35/30°C and moisture regimes of no drought (field capacity) and drought (-2.0 to -2.8 MPa plant water potential) in controlled environments until maturity. High temperature hastened the decline in photosynthetic rate and viable leaf area during maturation, decreased shoot and grain mass and kernel weight and soluble sugar content at maturity and reduced water use efficiency. Drought increased stomatal resistance; decreased photosynthesis, viable leaf area, shoot mass, grain mass and kernel weight and soluble sugar content and enhanced water use efficiency. Adverse effects were much more pronounced at high temperature than low temperature. Osmotic adjustment to drought was apparently promoted by low temperature of wheat to high temperature would improve its adaptation to regions with elevated temperature and either ample or deficit moisture.
Publicación
Asian Journal of Plant Sciences
ISSN : 1812-5697

Información bibliográfica

Tipo:
Journal Article
En AGRIS desde:
2012
Volumen:
4
Edición:
1
Página inicial:
757
Página final:
762
Editorial:
Asian Network for Scientific Information
Todos los títulos:
"Injury to Photosynthesis and Productivity from Interaction Between High Temperature and Drought During Maturation of Wheat"@eng
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Información bibliográfica

Tipo:
Journal Article
En AGRIS desde:
2012
Volumen:
4
Edición:
1
Página inicial:
757
Página final:
762
Editorial:
Asian Network for Scientific Information
Todos los títulos:
"Injury to Photosynthesis and Productivity from Interaction Between High Temperature and Drought During Maturation of Wheat"@eng