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首页> 外文期刊>Journal of Agronomy and Crop Science/Zeitschrift fur acker-und pflanzenbau >Growth and Ionic Content of Quinoa Under Saline Irrigation
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Growth and Ionic Content of Quinoa Under Saline Irrigation

机译：盐水灌溉下藜麦的生长和离子含量

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Drought and salinity are the most important abiotic stresses that affect plant's growth and productivity. The aim of the present work was to evaluate the effect of salt and water deficit on water relations, growth parameters and capacity to accumulate inorganic solutes in quinoa plants. An irrigation experiment was carried out in 2009 and 2010 in the Volturno river plain. Three treatments irrigated with fresh water (Q100, Q50 and Q25) and three irrigated with saline water (Q100S, Q50S and Q25S) were tested. For saline irrigation, water with an electrical conductivity of 22 dS m(-1) was used. Actual evapotranspiration (ETa), water productivity (WP), biomass allocation, relative growth rate (RGR), net assimilation rate (NAR), specific leaf area, leaf area ratio and ions accumulation of quinoa plants were evaluated. WP and plant growth were not influenced by saline irrigation, as quinoa plants incorporated salt ions in the tissues (stems, roots, leaves) preserving seed quality. Treatment with a reduction in the irrigation water to 25 % of full irrigated treatment (Q25) caused an increase in WP and a reduced dry matter accumulation in the leaves. Quinoa plants (Q25) were initially negatively affected by severe drought with RGR and NAR reduction, and then, they adapted to it. Quinoa could be considered a drought tolerant crop that adapt photosynthetic rate to compensate for a reduced growth
机译：干旱和盐分是影响植物生长和生产力的最重要的非生物胁迫。本工作的目的是评估盐和水分亏缺对藜麦植物中水分关系，生长参数和累积无机溶质的能力的影响。 2009年和2010年在Volturno河平原进行了灌溉实验。测试了三种用淡水灌溉的处理（Q100，Q50和Q25）和三种用盐水灌溉的处理（Q100S，Q50S和Q25S）。对于盐水冲洗，使用电导率为22 dS m（-1）的水。评价了藜麦的实际蒸散量（ETa），水分生产率（WP），生物量分配，相对生长率（RGR），净同化率（NAR），比叶面积，叶面积比和离子积累。 WP和植物的生长不受盐水灌溉的影响，因为藜麦植物在组织（茎，根，叶）中掺入了盐离子，从而保持了种子质量。将灌溉用水减少至完全灌溉处理（Q25）的25％进行处理，会导致WP增加，并且叶片中的干物质积累减少。藜麦植物（Q25）最初受到严重干旱的负面影响，降低了RGR和NAR，然后适应了这种情况。藜麦可以被认为是耐旱的作物，可以适应光合速率以补偿生长的减少

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