10份玉米资源耐盐性鉴定研究

Identification of Salt Tolerance of 10 Maize Resources

摘要: 为了保障玉米产业安全、加速盐碱地开垦利用，本研究利用不同浓度的NaCl溶液对10个供试玉米材料进行胁迫处理，旨在于筛选玉米材料的适宜的鉴定盐浓度结合玉米全生育期盐胁迫下的产量指标利用隶属函数法综合评价10个玉米品种耐盐性，为玉米种质资源耐盐评价和耐盐高产玉米品种筛选提供参考。结果表明，通过比较4个盐胁迫浓度下苗期胁迫指数，筛选出鉴定玉米耐盐材料的适宜NaCl胁迫浓度为200 mmol/L。利用隶属函数法对苗期盐胁迫指数和全生育期产量指标综合评价，最终得到表现较好的品种“泰和897”、“丰乐399”、“丰乐365”和“沃玉3号”，为盐碱地适生玉米种植品种选择提供参考。

Abstract: In order to ensure the safety of corn industry and accelerate the reclamation and utilization of saline-alkali land, this study used NaCl solution with different concentrations to stress 10 corn materials tested, aiming to comprehensively evaluate the salt tolerance of 10 corn varieties by using the membership function method to screen the appropriate identification salt concentration of corn materials and the yield index under salt stress during the whole growth period of corn. It provides reference for salt tolerance evaluation of maize germplasm resources and selection of salt-tolerant high-yield maize varieties. The results showed that by comparing the seedling stress index under four salt stress concentrations, the suitable NaCl stress concentration of maize salt-tolerant materials was 200 mmol/L. By using the membership function method, the salt stress index of seedling stage and the yield index of the whole growth period were comprehensively evaluated, and the good varieties “Taihe 897”, “Feng le 399”, “Feng le 365” and “Wo Yu 3” were finally obtained, which provided a reference for the selection of suitable maize planting varieties in saline-alkali land.