Aggarwal, Pramod K. ; Sinha, Suresh K. (1984) Differences in water relations and physiological characteristics in leaves of wheat associated with leaf position on the plant Plant Physiology, 74 (4). pp. 1041-1045. ISSN 0032-0889
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Official URL: http://www.plantphysiol.org/cgi/content/abstract/7...
Related URL: http://dx.doi.org/10.1104/pp.74.4.1041
Abstract
The seasonal change in leaf water potential and its components, stomatal resistance, specific leaf weight, photosynthesis rate, the activities of ribulose-1,5-bisphosphate carboxylase and nitrate reductase, and soluble proteins were measured in flag leaves (ninth from base in position), seventh and fifth leaves of wheat Trticam aestipum L. cv Kalyansona. Flag leaves had a lower water and solute potential and lower or equal turgor pressure than seventh and fifth leaves. These differences were found to be independent of environment. The rate of photosynthesis and nitrate reductase activity were always lower in fifth and seventh leaves than in flag leaf. The photosynthetic efficiency in flag leaves appeared to be associated with lower stomatal resistance and higher specific leaf weight. The relations between leaf water potential and relative water content showed a change with leaf position. This change possibly allows flag leaf to maintain its functional efficiency despite its lower water potential.
Item Type: | Article |
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Source: | Copyright of this article belongs to American Society of Plant Biologists. |
ID Code: | 35126 |
Deposited On: | 11 Apr 2011 12:59 |
Last Modified: | 17 May 2016 18:02 |
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