Abstract

Kentucky bluegrass (Poa pratensis L.) was exposed to salinity in the factorial study with 2 factors including salinity [irrigation with tap water and saline water with the EC (Electrical Conductivity) of 2, 4, and 6 dS/m] and progesterone and SA (no hormone, 1 mg/L progesterone, 10 mg/L progesterone, 1 mM SA, 3 mM SA, 1 mg/L progesterone + 1 mM SA) applied in four replications. The results showed that the increase in salinity resulted in the loss of N and Ca. Also, Cl and Na accumulated in the leaves. Salinity reduced relative water content to 78%. It increased electrolyte leakage, too. Salinity impaired shoot and root weight, plant height, and the number of tillers. In contrast, the treatments of progesterone and SA mitigated the harmful effects of salinity. These two regulators increased relative water content of leaves, N, Ca, and K contents, shoot and root fresh weight and the number of tillers in salinity-affected plants.

中文翻译：

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孕酮和水杨酸提高草地早熟禾对盐分胁迫的耐受性

摘要

肯塔基州早熟禾（早熟禾L.）在析因研究中暴露于盐分，其中包括2个因子：盐分[用自来水和盐水灌水，其EC（电导率）为2、4和6 dS / m）以及孕酮和SA（无激素，进行四次重复实验，分别使用1 mg / L孕酮，10 mg / L孕酮，1 mM SA，3 mM SA，1 mg / L孕酮+ 1 mM SA。结果表明，盐度的增加导致氮和钙的损失。而且，Cl和Na在叶片中积累。盐度将相对水含量降低至78％。它也增加了电解液的泄漏。盐分会损害枝条和根重，植物高度和分till数量。相反，黄体酮和SA的治疗减轻了盐度的有害影响。这两个调节剂增加了叶片的相对含水量，N，Ca和K含量，