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Seed Film Coating with Uniconazole Improves Rape Seedling Growth in Relation to Physiological Changes Under Waterlogging Stress
Authors:Jun?Qiu  Renmin?Wang  Jizhi?Yan  Email author" target="_blank">Jin?HuEmail author
Institution:(1) Department of Agronomy, Zhejiang University, 310029 Hangzhou, China;(2) Department of Agriculture Science, Hexi University, 734000 Zhangye, China
Abstract:Waterlogging is an important constraint of global production of rape. The effects of seed film coating with 0.0075% uniconazole on the growth and physiology was investigated using seedlings from three varieties of rape (Brassica napus L.) subjected to waterlogging. While seed coating with uniconazole had no significant effect on germination percentage during waterlogging stress, it enhanced root vigour, increased root length, root volume and root dry weight. It also significantly enhanced leaf dry weight and ratio of root to shoot, but induced a significant decrease in shoot height and stem dry weight. Seed film coating with uniconazole also significantly increased the activities of the antioxidant enzymes, POD, CAT and SOD, and soluble sugar concentration during waterlogging. Thus, it suggests that seed film coating with uniconazole at a suitable concentration can improve rape seedling growth and increase seedling establishment during waterlogging.
Keywords:Antioxidant enzymes  Brassica napus L    Seed film coating  Seedling growth  Uniconazole  Waterlogging
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