Photosynthetica 1999, 36(4):611-616 | DOI: 10.1023/A:1007008608217

Photosynthesis Parameters in Two Cultivars of Mulberry Differing in Salt Tolerance

S. Giridara Kumar1, A. Lakshmi1, K.V. Madhusudhan1, S. Ramanjulu1, C. Sudhakar1
1 Department of Botany, Sri Krishnadevaraya University, Anantapur, India

Three-month-old mulberry (Morus alba L.) cultivars (salt tolerant cv. S1 and salt sensitive cv. ATP) were subjected to different concentrations of NaCl for 12 d. Leaf area, dry mass accumulation, total chlorophyll (Chl) content, net CO2 assimilation rate (P N), stomatal conductance (g s), and transpiration rate (E) declined, and intercellular CO2 concentration (C i) increased. The changes in these parameters were dependent on stress severity and duration, and differed between the two cultivars. The tolerant cultivar showed a lesser reduction in P N and g s coupled with a better C i and water use efficiency (WUE) than the sensitive cultivar.

Additional key words: chlorophylls; intercellular CO2 concentration; leaf area; leaf dry mass; Morus alba; net photosynthetic rate; salt stress; stomatal conductance; transpiration; water use efficiency

Prepublished online: January 1, 2000; Published: December 1, 1999  Show citation

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Giridara Kumar, S., Lakshmi, A., Madhusudhan, K.V., Ramanjulu, S., & Sudhakar, C. (1999). Photosynthesis Parameters in Two Cultivars of Mulberry Differing in Salt Tolerance. Photosynthetica, 36(4), 611-616. doi: 10.1023/A:1007008608217
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