Abstract

Atriplex halimus grows in humid and saline warm regions of Mediterranean area showing high adaptability but less information is available on resistance to chilling temperatures.

Potted plants of five clones (MAR1, GIO1, SAN3, PAL1, and FAN3) were cultivated during 30 months in four localities (Oristano, Tempio, Sassari, and Villasor). Every 6 months, leaves, stems and roots of plants were the object of mineral composition analysis (N, P, Na, K, Ca, Mg, Cu, Zn, Fe, and Mn). During the experiment, air temperature was recorded and hour degrees sums calculated for thresholds ranging from 0 °C to 35 °C.

Leaves showed highest content of all elements, with the exception of iron.

Plants showed ability to accumulate mineral elements in a synergic or antagonistic way. Accumulation of chilling hour degrees positively correlated with calcium in leaves and stems, and with manganese in the whole plant. Sodium in leaves, instead, was favored by high temperatures, which are unfavorable to nitrogen accumulation in roots. Magnesium accumulation in leaves and roots enhanced with moderately high temperatures. Two of the tested clones (GIO1 and SAN3) showed a relative low adaptability to the coldest conditions. The other three clones provided better performances with the best behavior of PAL1.

抽象的

滨藜属植物生长在地中海地区的潮湿和盐碱温暖地区，显示出较高的适应性，但有关抗寒性的信息较少。

在四个地方（奥里斯塔诺，坦皮奥，萨萨里和维拉索尔）的30个月中，种植了五个克隆（MAR1，GIO1，SAN3，PAL1和FAN3）的盆栽植物。每6个月，植物的叶子，茎和根是矿物成分分析（N，P，Na，K，Ca，Mg，Cu，Zn，Fe和Mn）的对象。在实验过程中，记录了空气温度并计算了0°C至35°C阈值的小时度总和。

叶子中除铁以外的所有元素含量最高。

植物表现出以协同或拮抗方式积累矿物质的能力。冷藏时间的积累与叶片和茎中的钙以及整个植物中的锰成正相关。相反，高温下有利于叶片中的钠，而高温不利于根中的氮积累。镁在叶和根中的积累随着温度的升高而增强。测试的两个克隆（GIO1和SAN3）对最冷条件的适应性较低。其他三个克隆以PAL1的最佳性能提供了更好的性能。