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首页> 外文期刊>Vegetos: an international journal of plant research >Variation in root growth responses of sweet potato to hypoxia and waterlogging
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Variation in root growth responses of sweet potato to hypoxia and waterlogging

机译：甘薯根系生长的变化反应缺氧和洪涝灾害

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摘要

Climate change increase the probability of soil waterlogging due to severe rainfall. A low oxygen concentration in soil (hypoxia) is a major problem associated with waterlogging, and root development is an important indicator of resistance. However, little is known about the root development responses of sweet potato to hypoxia under waterlogging. In this study, the root hypoxia tolerance of four sweet potato cultivars was investigated using three environments (hydroponics, soil in pots, and upland field). In the hydroponic experiment, at 4 days after transplanting (DAT), the plants were transferred to either normoxia (control) or hypoxia and grown for 7 more days. In the soil pot experiment, seedlings at 7 DAT were grown for another 7 days under one of two treatments: drained (control) or waterlogging conditions. The root systems of individual plants were scanned with an image scanner using the WinRhizo software to measure root morphological traits. All the cultivars were tested for tuberous rootperformance under field waterlogging conditions imposed at the seedling stage. The obtained results showed that the root development responses to hypoxia were clearly associated and contributed to waterlogging tolerance in sweet potato plants. Of the four sweet potato varieties investigated, we identified Cuc Nhanh as the most waterlogging-tolerant variety and hence, it was noted as a promising and important genetic plant resource. The results of this study on root responses, hypoxia, and waterlogging relationships are fundamental towards exploring the mechanisms underlying hypoxia and waterlogging adaptation.
机译：气候变化增加土壤的概率洪涝灾害由于严重的降雨。土壤中浓度(缺氧)是一个主要的问题与洪涝灾害,和根发展的一个重要指标阻力。根发展甘薯的反应在涝缺氧。根耐缺氧四个红薯使用三个品种进行了研究环境(在盆水培法、土壤,高地字段)。几天后移植(DAT),植物转移到normoxia(控制)缺氧和增长了7天。盆栽试验,在7 DAT种植幼苗另一个在两种治疗7天:排水(控制)或水浸条件。根系的植物进行扫描一个图像扫描仪使用WinRhizo软件测量根形态特征。品种为结节性测试rootperformance领域下涝在苗期条件。结果表明,根的发展对缺氧的反应显然是相关的导致洪涝宽容甜土豆植物。调查,我们确定了中联科利Nhanh为最waterlogging-tolerant品种,因此,它是指出作为一种很有前途的和重要基因的植物资源。反应、缺氧和洪涝灾害关系是基本的探索缺氧和背后的机制涝适应。

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