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| DOI： |
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| Effect of Flooding and Waterlogging at Squaring Stage on Growth and Yield of Cotton Studied Using Pot Experiment |
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ZOU Pengfei, YUAN Baozhong, HU Xiaodong, WANG Yun
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College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
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| Abstract: |
| Flooding and waterlogging were main abiotic stresses for cotton. This paper studied the change in morphological traits of cotton cultivar Hua Mian 3109 subjected to flooding and waterlogging at squaring stage in the Yangtze River valley of China, as well as the ultimate yield using pot experiments. Three water treatments at the squaring stage were examined: normal irrigation (CK), flooding/waterlogging for seven days(T1), and flooding/waterlogging for 14 days (T2). The results showed that the flooding and waterlogging reduced almost all morphological traits, including SPAD value, plant height, functional leaf area, the number of green leaves, squares, flowers, bolls, fruiting branches, and fruiting nodes. The severity of the impact was in the order of CK＞T1＞T2. It was also found that there was a quick recovery in plant growth after the flooding and waterlogging was relieved. However, a prolonged waterlogging led to a reduction in seed yield and decrease in abscission of flowers, squares and bolls. |
| Key words: squaring period; flooding and waterlogging stress; cotton; growth; yield |
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