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Journal of Biological Sciences
  Year: 2001 | Volume: 1 | Issue: 11 | Page No.: 1088-1092
DOI: 10.3923/jbs.2001.1088.1092
 
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Impact of Optimal and Superoptimal Temperatures on the Photosynthetic Apparatus of Cotton Leaves
M. A. Sethar, V. Mala Pahoja , Q. I. Chachar and D. L. Laidman

Abstract:
The leaves of cotton cultivars Qalandri, MNH-93, Rehmani and S-12 were stressed for 2 h at 30 (control), 35, 38, 40, 42, 43, 44, 45 and 46°C to quantify the damage caused to chloroplast photosynthetic apparatus by chlorophyll fluorescence technique. There was 10-30% decrease in Fv/Fm ratio up to the temperature stress of 40°C. But at 44°C the cultivars showed considerably higher damage to photosynthesis process by recovering only 10, 13, 37 and 50% of the Fv/Fm ratio by the cultivars MNH-93, Qalandri, Rehmani and S-12 respectively.
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How to cite this article:

M. A. Sethar, V. Mala Pahoja , Q. I. Chachar and D. L. Laidman , 2001. Impact of Optimal and Superoptimal Temperatures on the Photosynthetic Apparatus of Cotton Leaves. Journal of Biological Sciences, 1: 1088-1092.

DOI: 10.3923/jbs.2001.1088.1092

URL: https://scialert.net/abstract/?doi=jbs.2001.1088.1092

 
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