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Genotypic Variation in P Utilization of Soybean(Glycine max L.)Grown in Various Insoluble P Sources(PDF)

《大豆科学》[ISSN:1000-9841/CN:23-1227/S]

Issue:
2007年04期
Page:
571-577
Research Field:
Publishing date:

Info

Title:
Genotypic Variation in P Utilization of Soybean(Glycine max L.)Grown in Various Insoluble P Sources
Author(s):
QIAOYun-fa1; HAN Xiao-Zeng1; MIAO Shu-jie2
1Northeast Institute of Geography and Agrio-Ecology，CAS，Harbin 150081;
2College of Resource and Environment，Northeast Agricultural University，Harbin 150030
Keywords:
Genotypic variation; P utilization; Insoluble P; Soybean
PACS:
S565.1
DOI:
10.3969/j.issn.1000-9841.2007.04.023
Abstract:
The information on soybean genotypes originating from different pH soil utilized insoluble P sources was various.Three soybean genotypes representing typical native species were collected from south，western and northeast of China.Plant biomass，P accumulation，organic acid excretion，pH and PUE were analysed.Three genotypes all favoured in Al-P，however，Suinong 10 and Nibadou total biomass in Al.P was 8.5% and 9.4% less than Na-P，respectively，then 5.3% and 11.8%，6.4% and 42.2% more than Ca-P and Fe-P，respectively.For Xin soybean 1 total biomass was 1.4%，20.8% and 40.8% more than Na-P，Fe-P and Ca-P，respectively-P concentration ranged from 1.37 to 2.47 mg/g，1.39 to 3.04 mg/g and 3.20 to 4.73 mg/g in shoots，roots and nodules，respectively.The maximum total P concentration was Al-P，Fe-P and Fe-P in Suinong10，Xin soybean 1 and Nibadou，respectively.Irrespective of genotype，the amount of organic acid exuded followed the order L(-)-malic>Oxalic>L(+)-lactic>Malonic>Succinic>Citric.However，for Suinong 10 the order was Oxalic>L (+)-lactic>L(-)-malic，for Xin soybean 1 the order was L(+)-lactic>L(-)-malic > Malonic>Oxalic> Citric and for Nibadou the order was L(-)-malic>Oxalic>L(+)-lactic>Citric>Malonic-Solution pH ranged from 5.48 to 6.52.PUE (phosphorus use efficiency) in Xin soybean 1 was more than Suinong 10 and Nibadou，irrespective of P source.The maximum PUE was Al-P，Al-P and Na-P in Suinong 10，Xin soybean 1 and Nibadou.The results suggest that soybean genotypes differ in growth response and P uptake from insoluble P sources and genotypic variation in P acquisition was related to root exudation and pH.

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Last Update: 2014-10-20