Research Article

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

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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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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Authors

M. A. Sethar

V. Mala Pahoja

Q. I. Chachar

D. L. Laidman

Keywords

Research Article

Impact of Optimal and Superoptimal Temperatures on the Photosynthetic Apparatus of Cotton Leaves

How to cite this article

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