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Growth attributes, biochemical modulations, antioxidant enzymatic metabolism and yield in Brassica napus varieties for salinity tolerance
Saudi Journal of Biological Sciences ( IF 4.4 ) Pub Date : 2021-08-11 , DOI: 10.1016/j.sjbs.2021.08.021
Rashda Naheed 1 , Humaira Aslam 1 , Hina Kanwal 1 , Fozia Farhat 1 , Mohammad I Abo Gamar 2 , Amina A M Al-Mushhin 3 , Dilfuza Jabborova 4, 5 , Mohammad Javed Ansari 6 , Sehar Shaheen 1 , Muhammad Aqeel 7 , Ali Noman 8 , Kamel Hessini 9
Affiliation  

Improvement in salinity tolerance of plants is of immense significance as salt stress particularly threatens the productivity of agricultural crops. This study was designed to assess the tolerance level of six Brassica napus varieties (Super, Sandal, Faisal, CON-111, AC Excel and Punjab) under different levels of salinity (0, 50, 100, 150 & 200 mM) with three replications under CRD. Salt induced osmotic stress curtailed the plant growth attributes, photosynthetic pigments and disturbed ionic homeostasis (K+, Na+, Ca2+, Cl-) but least disturbance as compared to control was found in Super and Sandal cultivars. Punjab canola and AC Excel canola cultivars were least tolerant to salinity because these displayed greater decline in all growth and biochemical attributes. Plants subjected to NaCl induced stress exhibited considerable decline in all attributes under study with proline as exception. Antioxidants (CAT, SOD & POD) showed an obvious change in Canola plants under stress, but greatest decline was displayed at 200 mM NaCl level in all six cultivars. Over all these attributes presented a comparatively stable trend in super and sandal cultivars. This shows presence of physiological resilience and metabolic capacity in these two cultivars to tackle salinity. Similarly, all yield attributes displayed adverse behavior under 150 mM & 200 mM salinity stress. Our results demonstrated that Super and Sandal cultivars of Brassica napus exhibit good performance in salinity tolerance and can be good option for cultivation in salt affected areas.



中文翻译:

甘蓝型油菜品种耐盐性的生长属性、生化调节、抗氧化酶代谢和产量

由于盐胁迫特别威胁农作物的生产力,因此提高植物的耐盐性具有重大意义。本研究旨在评估六种甘蓝型油菜品种(Super、Sandal、Faisal、CON-111、AC Excel 和 Punjab)在不同盐度(0、50、100、150 和 200 mM)下的耐受性水平,重复三次在 CRD 下。盐诱导的渗透胁迫削弱了植物的生长属性、光合色素和扰乱的离子稳态(K +、Na +、Ca 2+ 、 Cl -) 但与对照相比,在 Super 和 Sandal 品种中发现的干扰最小。旁遮普油菜籽和 AC Excel 油菜籽品种对盐度的耐受性最差,因为它们的所有生长和生化属性都表现出更大的下降。经受 NaCl 诱导胁迫的植物在研究中的所有属性中都表现出相当大的下降,但脯氨酸除外。抗氧化剂(CAT、SOD 和 POD)在胁迫下油菜植物表现出明显的变化,但在所有六个品种中在 200 mM NaCl 水平下显示出最大的下降。所有这些属性在超级和凉鞋栽培品种中呈现出相对稳定的趋势。这表明这两个品种具有解决盐度问题的生理弹性和代谢能力。类似地,所有产量属性在 150 mM 和 200 mM 盐度胁迫下都表现出不利行为。甘蓝型油菜耐盐性好,是盐渍区栽培的良好选择。

更新日期:2021-09-19
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