Effect of seed priming with salicylic acid on seed germination and seedling growth of broad bean (Vicia faba L)
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Abstract
Seed priming with growth regulators, especially salicylic acid, is a promising alternative seed primer because it is an important inducer of resistance against diseases and pests, as well as acting significantly on quality and seed yield. The exogenous salicylic acid SA applied at 0.0, 0.5, 1.0, and 3.0mM SA concentrations to faba bean seeds showed significant increase in seed germination and seedling growth except at high concentrations. Seed germination decreased by increasing of SA up to 3.0mM. As, SA at high concentrations 1.0 and 3.0 mM had inhibitory effects on germination as well as it reduced seedling growth ,where the lengths of plumule and root (radical) were reduced compared to control .Moreover ,these highest concentrations of SA shown negative result for fresh root weight. .Meanwhile, SA at low concentrations had no significant effect at (P>0.05) on all tested growth parameters. It can be noted seed priming of faba bean with low concentration of SA will speed up the germination time and enhance the establishment of seedlings as well as powerful tool in enhancing the growth and productivity of such crop especially in areas with saline irrigation water resources. Moreover; primed seeds will be less susceptible to soil-borne pathogens.
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References
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