大豆科学2007，Vol.26Issue(4)：571-577,7.
大豆利用难溶磷源基因型差异
Genotypic Variation in P Utilization of Soybean(Glycine max L. )Grown in Various Insoluble P Sources
摘要
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 andgenotypic variation in P acquisition was related to root exudation and pH.关键词
基因型变化/磷素利用/难溶磷源/大豆Key words
Genotypic variation/P utilization/Insoluble P/Soybean分类
农业科技引用本文复制引用
乔云发,韩晓增,苗淑杰..大豆利用难溶磷源基因型差异[J].大豆科学,2007,26(4):571-577,7.基金项目
国家重点基础研究发展计划(No.2005CB121101 and 2003CCB001) （No.2005CB121101 and 2003CCB001）
黑龙江省自然科学基金项目(No.C200615) （No.C200615）
