Photosynthetica, 2012 (vol. 50), issue 2

Photosynthetica 2012, 50(2):161-170 | DOI: 10.1007/s11099-012-0029-3

Analyzing the significance of defoliation in growth, photosynthetic compensation and source-sink relations

N. Iqbal1, A. Masood1, N. A. Khan1,*
1 Department of Botany, Aligarh Muslim University, Aligarh, India

Leaf canopy plays a determining role influencing source-sink relations as any change in source activity (photosynthesis) affects sink metabolism. Defoliation (removal of leaves) influences growth and photosynthetic capacity of plants, remobilizes carbon and nitrogen reserves and accelerates sink metabolism, leading to improved source-sink relations.
The response of plants to defoliation could be used to manipulate source-sink relations by removing lower and senescing leaves to obtain greatest photosynthetic capacity and efficient carbon and nitrogen metabolism under optimal and stressful environments. The present work enhances our current understanding on the physiological responses of plants to defoliation and elaborates how defoliation influences growth, photosynthetic capacity and source-sink relations under optimal and changing environmental conditions.

Keywords: carbon; defoliation; nitrogen; photosynthetic potential; sink; source

Received: August 4, 2011; Accepted: March 6, 2012; Published: June 1, 2012Show citation

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Iqbal, N., Masood, A., & Khan, N.A. (2012). Analyzing the significance of defoliation in growth, photosynthetic compensation and source-sink relations. Photosynthetica, 50(2), 161-170. doi: 10.1007/s11099-012-0029-3.
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