【摘要】 土壤盐渍化会影响农业可持续发展，造成生态失去平衡。培育耐盐植物是经济效益最大化和土壤改良效果最优的重要环节。研究旨在为黍子耐盐新品种选育提供鉴定指标，为盐碱地黍子品种的种植提供材料。以5个黍子育成品种为试验材料，基于不同浓度的中性混合盐（NaCl和Na2SO4），采用培养皿发芽方法，从芽鲜质量（SFW）、芽长（BL）、发芽指数（GI）、发芽势（GP）、根鲜质量（RFW））、发芽率（GR)、根长（RL）、活力指数（VI）等8项农艺性状评估材料的耐盐程度。通过分析不同盐浓度下这5个黍子育成品种发芽势和发芽率的差异，结果发现，160 mmol/L为进行盐处理的最适浓度。在该浓度下，5份材料的8项指标变异丰富，变异系数分别为168.41%、48.12%、23.13%、15.11%、32.94%、18.90%、64.37%和123.53%。对8个指标进行相关性分析、主成分分析及综合评价D值综合评价，结果发现，SFW、BL、GI、GP和RFW等5项指标可作为黍子耐盐性评价的参考指标；5份材料耐盐性从强到弱依次为晋黍7号、龙黍19号、宁糜13号、齐黍1号和龙黍9号。更多还原

【Abstract】 Soil salinization affects the sustainable development of agriculture and causes ecological imbalance. Cultivation of salt-tolerant plants is an important step to maximize economic benefits and optimize soil improvement. In order to provide identification index for breeding for new varieties of salt-tolerant broomcorn millet, and provide materials for the cultivation of broomcorn varieties in aline-alkali soil, in this study, five bred varieties of broomcorn millet were used as the test material, based on different concentrations of neutral salt mixture(NaCl and Na2SO4), using the dish germination method, eight agronomic traits including bud fresh weight(SFW), bud length(BL), germination index(GI), germination potential(GP), root fresh weight(RFW),germination rate(GR), root length(RL), and activity index(VI) were used to evaluate the salt tolerance of the materials. By analyzing the difference in germination potential and germination rate of the 5 broomcorn millet varieties under different salt concentrations, the results showed that 160 mmol/L was the optimal concentration for salt treatment. At this concentration, the variation of the eight indexes of the five materials was abundant, and the coefficient of variation was 168.41%, 48.12%,23.13%, 15.11%, 32.94%, 18.90%, 64.37%, and 123.53%, respectively. Correlation analysis, principal component analysis, and comprehensive evaluation of D value of the eight indexes found that 5 indexes including SFW, BL, GI, GP, and RFW could be taken as the reference indexes of salt tolerance evaluation.The salt tolerance of the five materials from strong to weak was: Jinshu 7, Longshu 19, Ningmi 13, Qishu 1, and Longshu 9.更多还原