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Abstract
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Article Information:
Physiological Responses of Cotton at Seedling Stage to Waterlogged Stress
Kai-wen Liu, Rong-rui Su, Jian-qiang Zhu and Hao Tian
Corresponding Author: Jian-qiang Zhu
Submitted: August 31, 2012
Accepted: October 03, 2012
Published: December 20, 2012 |
Abstract:
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In Jianghan plain as well as south China, cotton at seedling stage often encounter waterlogged stress, by
which normal growth of cotton plants is affected, the purpose of the study is to analyze the responses to
Waterlogging stress. Therefore flooding experiments of cotton in the seedling stage was made and a series of
physiological indices were observed such as Chlorophyll Relative value (RC), chlorophyll fluorescence (F0, Fm), Malondialdehyde (MDA), nomadic Proline (Pro), Dissoluble Sugar (DS), Peroxidase (POD) and Superoxide
Dismutase (SOD), Analytic results indicated that, after Waterlogging, chlorophyll hydrolysis rate was higher in the
first 3 days, the peak value of chlorophyll fluorescence decrease occurred between the 6th to 9th day. It figured that
stagnant water on the field should be drained off in 3 days after Waterlogging stress, to avoid the photosynthetic
efficiency being strongly inhibited. The balance of normal physiological metabolic process in cotton leaf was broken
after Waterlogging, some new negative changes occurred, as MDA content increasing and the activity of SOD
decline. Some other positive changes were accompanied, as the increasing of DS and Pro content and the activity of
POD, for protecting active tissues. These physiological indices appeared regularly changing characterized by fastslow-
fast, which can be simulated in unary cubic regression curve model.
Key words: Cotton, leaf, physiological metabolism, waterlogged stress, , , ,
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Cite this Reference:
Kai-wen Liu, Rong-rui Su, Jian-qiang Zhu and Hao Tian, . Physiological Responses of Cotton at Seedling Stage to Waterlogged Stress. Advance Journal of Food Science and Technology, (6): 348-351.
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ISSN (Online): 2042-4876
ISSN (Print): 2042-4868 |
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