SODIUM PARTITIONING WITHIN THE SHOOT OF SOYBEAN
SODIUM PARTITIONING WITHIN THE SHOOT OF SOYBEAN
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DOI：
10.1111/j.1399-3054.1994.tb00660.x
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发表时间：
1994-05-01
影响因子：
6.4
通讯作者：
LACAN, D
中科院分区：
文献类型：
--
作者：
DURAND, M;LACAN, D
大豆植株对Na ~+和Cl ~-的吸收和分配Merr. CV. Hodgson）暴露于中等浓度的NaCl的研究了8天的时间。植物表现出显着的保留Na+在茎和低运输到叶片的幼叶。木质部汁液沿主轴向上逐渐消耗Na+，老叶对流向幼叶的汁液的Na+消耗贡献很大。这些结果与韧皮部再循环的估计相结合表明，防止Na+积累在幼叶中的Na+消耗从木质部流，并通过高循环Na+通过韧皮部。然而，这种保护幼叶是有效的，只有非常温和的盐度处理。
Uptake and partitioning of Na+ and Cl- in plants of soybean (Glycine max L. Merr. cv. Hodgson) exposed to moderate NaCl concentrations were studied over an 8-day period. Plants showed marked retention of Na+ in the stems and low transport to laminae of young leaves. The xylem sap ascending the main axis was progressively depleted in Na+, The oldest leaf greatly contributed to Na+ depletion of the sap flowing to younger leaves. These results in combination with estimates of phloem recirculation indicated that Na+ accumulation in the young leaf was prevented both by depletion of Na+ from the xylem stream, and by a high recirculation of Na+ via the phloem. However, this protection of young leaves was effective only for very mild salinity treatment.