Interactive Effects of Phosphorus and Water Deficiency on Root Traits of Soybean
Low phosphorus and seasonal drought are the main limiting factors in soybean production in South China. A pot experiment was carried out with two soybean varieties, i. e. BX10 ( P-efficient) and BD2 ( P-inefficient) to determine the interactive effect of P and water stress on root traits. The experiment was a factorial with three levels of P application (0, 15 and 30 mg ? kg-1 ) and two of water (well-watered and drought). Phosphorous deficiency increased root length and surface area for both BX10 and BD2 at flowering stage, and BD 2 at full pod stage. Water stress at full pod stage significantly reduced root length, surface area, diameter and volume for BD2, but no obvious effect for BX10. P application could alleviate the adverse effects of drought, to increase root length, root surface area and root volume, and there were significant interactive effects of P and water for BD 2 at full pod stage.
Zhenjiang Qiao Kunzheng Cai Shiming Luo Xiaolong Yan
College of Agriculture, South China Agricultural University, Guangzhou 510642, China
国际会议
The 7th International Symposium on Plant-Soil Interactions at Low pH(第七届低pH条件下植物-土壤交互作用国际研讨会)
广州
英文
237-238
2009-05-17（万方平台首次上网日期，不代表论文的发表时间）