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Physiological Response of Different Soybeans under Sparingly Soluble Phosphate(PDF)

《大豆科学》[ISSN:1000-9841/CN:23-1227/S]

Issue:
2012年03期
Page:
411-415
Research Field:
Publishing date:

Info

Title:
Physiological Response of Different Soybeans under Sparingly Soluble Phosphate
Author(s):
GU Si-yuLIU ShuangWANG Jia-jiaYAN Yan
College of Resources and Environment,Northeast Agricultural University,Harbin 150030,Heilongjiang,China
Keywords:
SoybeanSparingly soluble phosphateAdaption mechanism
PACS:
S565.1
DOI:
10.3969/j.issn.1000-9841.2012.03.015
Abstract:
Studying the adaptation of soybean plant to low P stress was very important for screening or breeding P-efficient soybean genotypes.A sand culture and a solution culture experiment were conducted to study the genotypic discrepancy and physiology variation of soybean in using insoluble phosphates.The results showed that the P concentration and uptake in insoluble phosphates treatment were lower than that in high phosphates treatment(P<0.05),and there were differences in phosphorus concentration and uptake among different soybean genotypes.The insoluble phosphate induced the increase of acid phosphatase(APA) in leaf and root.At late stage of insoluble phosphates treatment,the malondialdehyde(MDA) content of soybean was higher than that in high phosphates treatment,indicating that P deficiency stress could lead to the accumulation of superoxide free radical and the increase of membrane lipid peroxidation.In Ca-P and Fe-P treatment,the plant P concentration had very significant negative correlation with leaf APA.

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Last Update: 2014-08-16