Quinoa is a traditional Andean seed crop highly tolerant to abiotic stresses. Since most seed crops cultivars are sensitive to drought stress, quinoa is considered as a valuable candidate for severe environmental conditions to which the plant is exposed. In this study we focused on the impact of hydropriming on drought tolerance in three quinoa cultivars (Q26, Q29 and Titicaca) in two arid regions of Iran. We observed that, under field conditions, quinoa responded to drought stress with a significant decrease in growth, yield component, seed yield and biochemical traits including photosynthetic pigments and relative water contents. In contrast, malondialdehyde, electrolyte leakage and proline concentration in all quinoa cultivars in both regions increased. However, seed priming significantly improved growth and seed yield. The results of the correlation analysis revealed that seed yield was highly positively related to pigments and proline concentration. Therefore, it could be suggested that these traits are efficient and reliable indicators for indirect selection of tolerant quinoa cultivars under drought stress conditions. In general, Q26 and Q29 were considered as superior cultivars for well-watered conditions and Titicaca cultivar was found relatively more drought tolerant than other cultivars. This study may contribute to the understanding of seed priming could be applied as an efficient approach to ameliorate the adverse effects of drought stress in quinoa cultivars.

藜麦是传统的安第斯种子农作物，对非生物胁迫具有很高的耐受性。由于大多数种子农作物品种对干旱胁迫敏感，因此藜麦被认为是该植物所面临的严酷环境条件的有价值的候选者。在这项研究中，我们重点研究了加氢引发对伊朗两个干旱地区的三种藜麦（Q26，Q29和喀喀喀）的耐旱性的影响。我们观察到，在田间条件下，藜麦对干旱胁迫作出了响应，其生长，产量构成，种子产量以及包括光合色素和相对含水量在内的生化特征均明显下降。相反，两个地区所有藜麦品种的丙二醛，电解质泄漏和脯氨酸浓度均增加。但是，启动种子可以显着改善生长和种子产量。相关分析的结果表明，种子产量与色素和脯氨酸浓度高度正相关。因此，可以认为这些性状是在干旱胁迫条件下间接选择耐性藜麦品种的有效和可靠指标。总的来说，Q26和Q29被认为是灌溉条件良好的优良品种，而喀喀品种比其他品种具有更强的耐旱性。这项研究可能有助于了解种子引发作用，可以作为减轻藜麦品种干旱胁迫不利影响的有效方法。可以认为，这些性状是干旱胁迫条件下间接选择耐性藜麦品种的有效和可靠指标。总的来说，Q26和Q29被认为是灌溉条件良好的优良品种，而喀喀品种比其他品种具有更强的耐旱性。这项研究可能有助于了解种子引发作用，可以作为缓解藜麦品种干旱胁迫的不利影响的有效方法。可以认为，这些性状是干旱胁迫条件下间接选择耐性藜麦品种的有效和可靠指标。总的来说，Q26和Q29被认为是灌溉条件良好的优良品种，而喀喀品种比其他品种具有更强的耐旱性。这项研究可能有助于了解种子引发作用，可作为减轻藜麦品种干旱胁迫不利影响的有效方法。