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温室条件下,用NaCl和Na2SO4处理石头扁桃、桃扁桃和毛桃,处理浓度为0,75,150,300和350 mmol/L,处理10,20 d分别取叶、根和茎,测定各器官中离子吸收与分布变化规律。研究结果表明,盐胁迫下,3种砧木根、茎、叶中Na+,Cl-,SO42-含量及Na+/K+比均随盐浓度的增加和处理时间的延长而增加,K+含量变化规律不稳定,但桃扁桃根、茎和叶片中K+略高于其他两个品种;石头扁桃根、茎、叶片中Na+/K+比值高于其它两个品种,桃扁桃中Na+/K+比值最低。桃扁桃根部Na+,Cl-和SO42-含量高于石头扁桃和毛桃,而叶片和茎中Na+,Cl-和SO42-含量却低于石头扁桃和毛桃。桃扁桃根部能够积累较多的Na+,阻止和减少了Na+向地上部的运输,从而减轻了Na2SO4对它的伤害,进而表明了桃扁桃耐盐能力较强。
Under greenhouse conditions, the almonds, peach almonds and peaches treated with NaCl and Na2SO4 were treated with different concentrations of 0, 75, 150, 300 and 350 mmol / L, and the leaves, roots and stems were treated for 10 and 20 days. The law of change. The results showed that the contents of Na +, Cl-, SO42- and Na + / K + in roots, stems and leaves of three rootstocks under salt stress increased with the increase of salt concentration and treatment time, and the variation of K + content was not stable , But K + of peach root, stem and leaf was slightly higher than that of the other two cultivars. The ratio of Na + / K + in the roots, stems and leaves of peach almond was higher than that of the other two cultivars, and the ratio of Na + / K + was the lowest in peach. Contents of Na +, Cl- and SO42- in roots of peach almond were higher than those in almonds and peaches, but contents of Na +, Cl- and SO42- in leaves and stems were lower than almonds and peaches. Peach almond root can accumulate more Na +, prevent and reduce Na + transport to the shoot, thus reducing the harm of Na2SO4, and then showed the peach almond is more salt-tolerant.