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Effects of alginate oligosaccharides on germination and physiological characteristics of barley seeds

Alginate oligosaccharide is a degradation product of alginate. It has good water solubility, is easy to absorb, and has a small molecular weight. It plays an important role in promoting plant growth, inducing plant resistance and improving product quality. In this experiment, alginate oligosaccharide was obtained after alginate lyase was degraded by alginate lyase, and the growth status and physiological indicators of barley seeds treated with different concentrations of alginate oligosaccharide were studied under the same conditions. Soak the treated barley seeds in an alginate oligosaccharide solution with a concentration of 0, 0.2%, 0.4%, 0.5%, and 0.6% respectively for 24h to induce germination. After sowing, place them in a 24℃ incubator for germination. Repeat 3 treatments for each group. Times. The growth index, chlorophyll content and amylase activity were determined. The test results showed that the treatment with low concentration of alginate oligosaccharide can increase the seedling and root length of barley seeds and promote seed germination, while the treatment with high concentration of alginate oligosaccharide has obvious effects on the germination of barley seeds. The downward trend may even appear to inhibit. The 0.5% concentration of alginate oligosaccharide has the most significant effect on the root length, shoot length and quality of barley seeds, chlorophyll content and amylase activity.

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