不同生长年限及生长环境下黄芪种子品质评价研究

Study on Seed Quality Evaluation of Astragalus membranaceus in Different Growing Years and Growing Environments

为探究不同生长年限(三年生、四年生、五年生)及生长环境(野生阳坡、野生阴坡、人工阳坡、人工阴坡)对黄芪种子抗氧化酶活性及内源性营养物质含量的影响,本研究以不同生长年限及生长环境下蒙古黄芪种子为试验材料,测定其抗氧化酶(SOD、POD、CAT)活性、过氧化氢酶(CAT)活性、丙二醛(MDA)含量以及可溶性糖、粗脂肪、蛋白质含量等指标,对黄芪种子品质进行评价分析。结果表明,蒙古黄芪种子随着生长年限的增加,其抗氧化酶(SOD、POD、CAT)活性呈增长趋势,MDA含量呈下降趋势,内源性营养物质呈上升趋势;野生黄芪种子的抗逆性要优于仿野生黄芪;阳坡种植的黄芪种子品质优于阴坡;蒙古黄芪种植留种宜选择四年生、五年生阳坡植株,其中野生黄芪最佳。

To explore the effects of different growth years(three years, four years, five years) and growth environment(wild sunny slope, wild shade slope, artificial sunny slope, artificial shade) on the Astragalus membranaceus seed antioxidant enzyme activity and endogenous nutrient content. In this study, Astragalus membranaceus var. mongholicus were used as experimental materials in different growing years and growing environments, and antioxidant oxidase(SOD, POD, CAT) activity, catalase(CAT) activity, malonaldehyde(MDA) content, soluble sugar, crude fat, protein content and other indexes were determined to evaluate and analyze the seed quality of Astragalus membranaceus seeds. The results showed that the activities of antioxidant enzymes(SOD, POD, CAT) increased, the content of MDA decreased, and the endogenous nutrients increased with the growth of Astragalus membranaceus var. mongholicus seeds. The stress resistance of wild Astragalus membranaceus seed was better than that of imitation wild Astragalus membranaceus. The seed quality of Astragalus membranaceus planted on the sunny slope was better than that on the negative slope. Astragalus membranaceus var. mongholicus planting retention should choose four or five years of yang-slope plants, among which wild Astragalus membranaceus var. mongholicus was the best.