Kumar, Neeraj and Kumar, Sanjay and Ahuja, Paramvir Singh (2007) Different photosynthetic responses of wild and cultivated plants to high irradiance. Photosynthetica, 45 (1). pp. 70-74. ISSN 0300-3604

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Abstract

In addition to other factors, high altitude (HA) environment is characterized by high photosynthetic photon flux density (PPFD). Photosynthetic characteristics of wild and cultivated plants were studied at different irradiances at Losar, India (altitude 4 200 m). Wild plants were tolerant to high PPFDs. Slopes of curve between net photosynthetic rate (PN) and intercellular CO2 concentration (Ci) or stomatal conductance (gs) increased with increase in irradiance suggesting insensitivity or tolerance of these plants to higher PPFD. Cultivated plants, however, were sensitive to higher PPFD, their slopes of curves between PN and Ci or gs decreased with increased PPFD. Tolerance or insensitivity to higher PPFD was an important parameter affecting plant performance at HA.

Item Type:	Article
Uncontrolled Keywords:	Aquilegia; Hordeum; intercellular CO2 concentration; irradiance; photosynthetic photon flux density; Pisum; Rumex; species differences; stomatal conductance.
Subjects:	Plant sciences Synthetic Chemistry
Divisions:	UNSPECIFIED
Depositing User:	Dr. Aparna Maitra Pati
Date Deposited:	27 Dec 2011 08:40
Last Modified:	07 Feb 2012 10:55
URI:	http://ihbt.csircentral.net/id/eprint/63

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