Abstract To evaluate the effect of superabsorbent polymers (SAPs) on the growth, some physiological traits, essential oil (EO) content and composition of sweet basil (Ocimum basilicum cv. Keshkeni luvelu) under salinity stress, a pot factorial experiment in randomized complete design with three replications was done. Treatments included salinity stress levels (0, 40, 80, and 120 mM NaCl) and superabsorbents (Ackoasorb, Terracottem, Stockosorb, and control). The results showed that the growth characteristics, SPAD, K+, and K+/Na+ ratio were decreased by severity of NaCl stress, whereas the application of SAPs have increased them. On the other hand, EO content, membrane permeability, MDA, proline, and Na+ contents were increased under severity of NaCl stress and SAPs application were decreased them, except EO content. At the highest salinity level (120 mM NaCl), the application of the Terracottem reduced membrane permeability and Na+, however, shoot dry weight, shoot to root weight ratio, leaf dry matter and the EO content increased by the Terracottem application. In addition, the Stockosorb application decreased MDA and proline contents, but the percentages of oxygenated monoterpenes, especially linalool and tau-muurolol increased under Stockosorb application. In conclusion, the application of SAPs can alleviate the harmful effects of salt stress on quantity and quality yields of sweet basil.

中文翻译：

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盐胁迫和高吸水剂应用对甜罗勒生长和精油成分的影响

摘要 为了评价高吸水性聚合物 (SAPs) 对盐胁迫下甜罗勒 (Ocimum basilicum cv. Keshkeni luvelu) 生长、一些生理性状、精油 (EO) 含量和成分的影响，采用随机完全设计的盆栽析因试验。完成了三个重复。处理包括盐度胁迫水平（0、40、80 和 120 mM NaCl）和超吸收剂（Ackoasorb、Terracottem、Stockosorb 和对照）。结果表明，NaCl胁迫严重程度降低了生长特性、SPAD、K+和K+/Na+比值，而SAPs的应用则增加了这些值。另一方面，EO含量、膜通透性、MDA、脯氨酸和Na+含量在严重的NaCl胁迫下增加，而SAPs的应用则减少了，除了EO含量。在最高盐度水平 (120 mM NaCl) 下，Terracottem 的应用降低了膜渗透性和 Na+，然而，Terracottem 应用增加了地上部干重、地上部与根重比、叶片干物质和 EO 含量。此外，Stockosorb 应用降低了 MDA 和脯氨酸含量，但含氧单萜，尤其是芳樟醇和 tau-muurolol 的百分比在 Stockosorb 应用下增加。总之，SAPs的应用可以减轻盐胁迫对甜罗勒产量和质量的不利影响。Stockosorb 施用降低了 MDA 和脯氨酸含量，但含氧单萜的百分比，尤其是芳樟醇和 tau-muurolol 在 Stockosorb 施用下增加。总之，SAPs的应用可以减轻盐胁迫对甜罗勒产量和质量的不利影响。Stockosorb 施用降低了 MDA 和脯氨酸含量，但含氧单萜的百分比，尤其是芳樟醇和 tau-muurolol 在 Stockosorb 施用下增加。总之，SAPs的应用可以减轻盐胁迫对甜罗勒产量和质量的不利影响。