Effects of Aluminum Stress on Growth and Physiological Characteristics in Peanut Root
XU Fen-fen
CHENG Shi-yu
TIAN Yu-qing
Abstract：In order to clarify the response of the peanut root to aluminum toxicity in acidic soil,the root growth and physiological characteristics of peanut (Arachis hypogaea L.)seedlings under different concentrations of aluminum were studied in this paper by hydroponics culture.The results showed that the growth of peanut seedling roots under the low concentrations of aluminum(0.5-1.0 mmol/L)was promoted at first nine days after aluminum treatment,the root length in 0.5,1.0 mmol/L aluminum treatment was improved by 9.6% and 16.6% respectively compared with CK,the root fresh weight in 0.5 ,1.0 mmol/L aluminum treatment was increased by 2.5% and 8.2% respectively compared with CK.The growth of peanut root in high concentrations of aluminum(≥2.0 mmol/L)was significantly inhibited.The root length and the root fresh weight in 8.0 mmol/L aluminum treatment were reduced by 45.0% and 26.5%respectively compared with CK at the first nine days after aluminum treatment.The SOD,POD activities of root in low concentrations of aluminum(0.5-1.0 mmol/L)were enhanced,and the root cell membrane permeability decreased,so the growth of peanut root was promoted.However, the SOD,POD activities of root in high concentrations of aluminum(≥2.0 mmol/L)decreased, and the root cell membrane permeability increased,so the growth of peanut root was inhibited.
Keywords：aluminum stresspeanutroot growthprotective enzyme activityproline contentcytoplasmic membrane permeability
Publication Date：2014-09-01
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：4( 52-55 )