Hasson E, Poljakoff-Mayber A
Department of Botany, The Hebrew University of Jerusalem, Israel.
Oecologia. 1981 Aug;50(1):94-97. doi: 10.1007/BF00378799.
The effect of salinity on ageing of pea roots was studied. The distance from the apex at which differentiation of xylem elements occurred and the relative increase in the function of pentose phosphate pathways were taken as parameters for maturation or ageing.Pea seeds (Pisum stivum L.) of the varieties Alaska and Dan were used in these experiments. The seeds were germinated and grown in vermiculite moistened with Hoagland's solution or Hoagland's solution containing either 96 or 120 mM NaCl. In Alaska roots salinity induced differentiation in a lower section of the root than in controls, and the increase in the function of the pentose phosphate pathway paralleled the advance of maturation. Salinity apparently induces earlier ageing in Alaska roots. This is not the case in Dan roots which tolerate slightly higher salinity levels than Alaska.
研究了盐度对豌豆根老化的影响。将木质部细胞分化发生处距根尖的距离以及戊糖磷酸途径功能的相对增加作为成熟或老化的参数。在这些实验中使用了阿拉斯加和丹这两个品种的豌豆种子（Pisum stivum L.）。种子在用霍格兰溶液或含有96或120 mM NaCl的霍格兰溶液湿润的蛭石中萌发并生长。在阿拉斯加根中，盐度诱导根的较低部分发生分化，且戊糖磷酸途径功能的增加与成熟进程平行。盐度显然诱导阿拉斯加根更早老化。但丹根的情况并非如此，丹根比阿拉斯加根能耐受略高的盐度水平。
