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首页> 外文期刊>Journal of Science and Technology of Greenhouse Culture >Physiological assessment of drought tolerance of two ecotypes of cumin (Cuminum cyminum L.) under greenhouse conditions
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Physiological assessment of drought tolerance of two ecotypes of cumin (Cuminum cyminum L.) under greenhouse conditions

机译：温室条件下两种生态型小茴香（Cuminum cyminum L.）的耐旱性生理评估

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摘要

Drought has adverse effects on plant growth and production. Plants respond to drought stress through biochemical and physiological processes. In the present study, physiological responses of two cumin (Cuminum cyminum L.) ecotypes including Ravar and Gonbad, which belong to dry and sub-humid regions of Iran, respectively, were evaluated in a split-plot factorial experiment with three replications in controlled greenhouse conditions. Physiological traits such as relative water content, relative leaf water loss and electrolyte leakage were measured. Analysis of variance showed that there are considerable genetic variations for drought tolerance between the ecotypes. Drought stress decreased relative water content and relative leaf water loss rate, while electrolyte leakage was significantly increased in both ecotypes. Most of the significant changes were recorded in Gonbad ecotype. The Ravar ecotype demonstrated higher tolerance to drought stress, as compared to Gonbad ecotype, which can be due to compatibility of this genotype to water-deficit conditions. Therefore, this ecotype was recommended as a tolerant ecotype to drought stress. In conclusion, the investigated traits in this experiment were found to be valuable criteria in selection of drought-tolerant ecotypes at seedling stage under greenhouse conditions.
机译：干旱对植物的生长和产量产生不利影响。植物通过生化和生理过程响应干旱胁迫。在本研究中，分别在伊朗的干旱和半湿润地区对包括拉瓦尔和贡巴德在内的两种孜然（Cumum cyminum L.）生态型的生理反应进行了分块因子分解实验，其中三个重复进行了受控温室条件。测量了诸如相对含水量，相对叶片失水和电解质渗漏的生理特性。方差分析表明，不同生态型之间的耐旱性遗传差异很大。干旱胁迫降低了相对水分含量和叶片相对失水率，而两种生态型的电解质渗漏均显着增加。大多数重大变化都记录在贡巴德生态型中。与贡巴德（Gonbad）生态型相比，拉瓦尔（Ravar）生态型表现出更高的抗旱能力，这可能是由于该基因型与缺水条件的相容性。因此，推荐将该生态型作为耐干旱性的生态型。综上所述，在温室条件下，本实验研究的性状是选择苗期耐旱生态型的有价值标准。

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