Effects of Gibberellin Immersion on Germination and Physiological Characteristics of Quinoa Seeds
Using quinoa variety Yilizao 1 as the experimental material,the paper-towel germination method in petri dishes was em-ployed to investigate the effects of seed soaking treatments with various concentrations of gibberellin(GA)(80,160,240,320,400,480 mg·L-1)on seed germination and seedling physiological characteristics of quinoa.The aim was to provide a reference for optimiz-ing quinoa cultivation techniques and enhancing yield.The results showed that Gibberellin(GA)significantly promoted quinoa seed germination and optimized the physiological state of seedlings.With increasing GA concentration,all parameters exhibited a trend of first increasing and then decreasing.Under soaking treatment with 240 mg·L-1 GA3,quinoa seeds exhibited high vigor,with significant increased in germination rate,germination energy,germination index,vigor index,plumule length,and fresh weight by 9.34％,17.59％,10.73％,35.07％,25.56％,and 14.40％,respectively,compared to the control.Peroxidase(POD),catalase(CAT),soluble protein,and soluble sugar levels were significantly increased by 68.69％,70.78％,31.79％,and 50.90％,respectively,compared to the control group.In contrast,proline content was significantly reduced by 39.71％compared to the control.In conclusion,when the GA3 concentration is 240 mg·L-1,the effect is most pronounced,significantly improving seed vigor,germination rate,and related physiological indicators.This concentration is suitable for optimizing quinoa cultivation.
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