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首页> 外文期刊>Agricultural Water Management >Assessment of Iranian chickpea (Cicer arietinum L.) germplasms for drought tolerance.
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Assessment of Iranian chickpea (Cicer arietinum L.) germplasms for drought tolerance.

机译：评估伊朗鹰嘴豆（Cicer arietinum L.）种质的抗旱性。

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Iran is one the most important centers of diversity for chickpea in south western Asia. Landraces are well adapted to local environmental conditions, and have evolved a range of morphological, phenological and physiological mechanisms to efficiently utilize the available water in a dry environment. In order to study some of these mechanisms, 150 genotypes of chickpea (Kabuli type) were evaluated using Augmented Designs for Preliminary Yield Trials under stress (Rainfed) and nonstress (Irrigated) conditions in Research Field of Mashhad College of Agriculture, Ferdowsi University of Mashhad, during 2005-2006 growing season. Then, based on the obtained results, four candidate genotypes for drought tolerance and two susceptible ones were evaluated in a pot experiment at open door situation in stressed (25% Field Capacity) and non-stressed (Field Capacity) conditions based on a factorial trial in Randomized Complete Block Design. There were positive and highly significant correlations between quantitative drought resistance indices such as MP, GMP, STI and HM with yield in stress and nonstress conditions. Also, there were positive and high significant correlations for SSI and DRI with yield in nonstress and stress conditions, respectively. Based on drought resistance indices and DRI, MCC544, MCC696 and MCC693 genotypes were superior to others, so they can be viewed as promising genotypes for drought resistance. These results were approved using three dimensional scatter graph and multivariate biplot graph. In stress condition, there were negative and high significant correlations between yield and days to flowering. Drought stress decreased leaf area per plant in all genotypes, significantly. In stressed and non-stressed conditions, leaf area in susceptible genotypes was more than that in tolerant genotypes, thus drought tolerance may be attributed to less transpiration and water loss because of smaller leaf size and reduced leaf area expansion in tolerant genotypes when drought stress develops.
机译：伊朗是东南亚鹰嘴豆最重要的多样性中心之一。地方品种很好地适应了当地的环境条件，并发展了一系列形态，物候和生理机制，以有效利用干旱环境中的可用水。为了研究其中的一些机制，在马什哈德大学马什哈德农业学院马什哈德农业学院的研究领域中，在胁迫（雨水）和非胁迫（灌溉）条件下，采用初产试验的增强设计对鹰嘴豆的150个基因型（Kabuli型）进行了评估。 ，在2005-2006年生长季节。然后，基于获得的结果，基于析因试验，在开放试验中，在压力（25％田间持水量）和非胁迫（田间持水量）条件下的盆栽试验中，评估了四种耐旱候选基因型和两种易感基因型在随机完整块设计中。在胁迫和非胁迫条件下，MP，GMP，STI和HM等定量抗旱指数与产量之间存在正相关关系，且高度相关。同样，在非胁迫和胁迫条件下，SSI和DRI分别与产量成正相关和高度显着相关。基于抗旱指数和DRI，MCC544，MCC696和MCC693基因型均优于其他基因型，因此可以认为它们是抗旱的基因型。这些结果使用三维散点图和多元双线图得到了认可。在胁迫条件下，产量与开花天数之间呈负相关和高度显着相关。干旱胁迫使所有基因型的单株叶片面积显着减少。在胁迫和非胁迫条件下，易感基因型的叶面积大于耐性基因型的叶面积，因此，当干旱胁迫发生时，耐旱性可能归因于较小的叶片尺寸和耐性基因型的叶面积扩大，从而减少了蒸腾作用和水分流失。

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