Title: Effect of Ethylene on Physiological and Biochemical Indexes of Soybean Seedlings under Low Phosphorus
Abstract: In order to analyze the effects of ethylene(50 μmol·L-1)on physiological and biochemical of soybean seedlings under low phosphorus,pot experiments were conducted in 2010,with soybean cultivar Zhonghuang 22 as material.Soybean seedlings were transplanted into Hoagland solutions when the first true leaves were expanded.Four treatments including HP(2 mmol·L-1 Pi),LP(20 μmol·L-1 Pi),HP+Eth and LP+Eth were set.After cultivation for 15 days,soybean seedlings were sampled and the physio-biochemical characters of soybean were determined,such as photosynthetic rate,transpiration rate,ethylene release quantity,phosphorus content,root activity,etc.The results showed that ethylene affected physiological and biochemical traits of soybean.Under low phosphorus stress,plant roots' ethylene production and phosphorus content increased obviously after adding ethylene.At the same time,ethylene promoted the growth of main root,root volume and root vigor.It showed ethylene could enhance the phosphorus absorbing ability by promoting root morphology and activity.For photosynthesis,transpiration and nitrate reductase activity,however,ethylene had inhibitory effect,which led to the decrease of dry matter accumulation and water absorption.
Publication Year: 2011
Publication Date: 2011-01-01
Language: en
Type: article
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