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Augmenting the salt tolerance in wheat (Triticum aestivum) through exogenously applied silicon

机译：通过外源施用硅提高小麦（Triticum aestivum）的耐盐性

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Although silicon improves the salt tolerance in grasses, the mechanism involved is still ambiguous. Moreover in wheat, classified as Si-accumulator, silicon can alleviate the salt stress. Hence in this study, the effects of silicon using calcium silicate (150 mg/L) on the morphology, physiology and biochemistry of wheat genotypes (salt sensitive; Auqab-2000 and salt tolerant; SARC-5) differing in salt tolerance under saline (12 dS/m) and non-saline soil media (2 dS/m) were investigated. Silicon supplementation into the root medium significantly improved the K+?and K+:Na+?ratio, leaf water potential and stomatal conductance, but reduced the Na+. Plants harvested at maturity indicated a concomitant increase in number of tillers, number of grains per spike, grain and straw yield with Si application both under optimal and stressful conditions. The results suggest that Si application in soil medium is beneficial in profoundly affecting physiological phenomena and improving wheat growth under salt stress.
机译：尽管硅提高了草的耐盐性，但所涉及的机理仍然不清楚。此外，在被归类为硅积累剂的小麦中，硅可以缓解盐分胁迫。因此，在这项研究中，硅酸钙（150 mg / L）对小麦基因型（盐敏感，Auqab-2000和耐盐性; SARC-5）的形态，生理和生化的影响在盐分下的耐盐性不同（研究了12 dS / m）和非盐渍土介质（2 dS / m）。根部培养基中添加硅可显着改善K +和K +：Na +比率，叶水势和气孔导度，但可减少Na +。在最佳条件和胁迫条件下，施用硅均会增加分harvest，每穗粒数，谷物和稻草的产量。结果表明，在土壤介质中施用硅有利于深刻影响生理现象并改善盐胁迫下的小麦生长。

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