Department of Biotechnology, Savitribai Phule Pune University, Pune, India.
Biology Department, Queen's University, Kingston, ON, Canada.
Bull Environ Contam Toxicol. 2020 Mar;104(3):351-357. doi: 10.1007/s00128-020-02795-z. Epub 2020 Jan 29.
Effect of NaCl-induced salinity stress was studied on three wheat (Triticum aestivum L.) genotypes (Platinum Lok 1, Eagle 135 and Kisan farmer). Seedling growth characteristics, chlorophyll contents, lipid peroxidation (MDA contents), proline, glycine betaine (GB) and the activities of catalase and peroxidase enzymes were evaluated at the seedling stage. The magnitude of reduction in growth parameters and chlorophyll contents was less in Platinum Lok 1 as compared to Kisan Farmer and Eagle 135. Platinum Lok 1 exhibited the highest increase in free proline and GB contents under NaCl stress as compared to the other two genotypes. Compared to Platinum Lok 1 and Eagle 135, Kisan Farmer accumulated more MDA contents under salinity stress. The enzyme activities were significantly higher in Platinum Lok 1 when compared to the other two genotypes. Therefore, these parameters could provide useful markers for the identification of salinity stress tolerant wheat genotypes at the seedling stage.
研究了 NaCl 诱导的盐胁迫对三个小麦（Triticum aestivum L.）基因型（Platinum Lok 1、Eagle 135 和 Kisan farmer）的影响。在幼苗期评估了幼苗生长特性、叶绿素含量、脂质过氧化（MDA 含量）、脯氨酸、甘氨酸甜菜碱（GB）以及过氧化氢酶和过氧化物酶的活性。与 Kisan Farmer 和 Eagle 135 相比，Platinum Lok 1 的生长参数和叶绿素含量减少幅度较小。与其他两个基因型相比，Platinum Lok 1 在 NaCl 胁迫下表现出最高的游离脯氨酸和 GB 含量增加。与 Platinum Lok 1 和 Eagle 135 相比，Kisan Farmer 在盐胁迫下积累了更多的 MDA 含量。与其他两个基因型相比，Platinum Lok 1 的酶活性显著更高。因此，这些参数可以为在幼苗期鉴定耐盐小麦基因型提供有用的标记。
