不同糜子品种芽期耐盐性比较

目的]研究不同糜子品种芽期耐盐性,筛选出耐盐性强的材料,为糜子耐盐品种选育与利用提供依据。方法]以6个糜子品种MZ-5、MZ-11、MZ-14、MZ-28、MZ-29、MZ-30为研究对象,通过180 mmol/L Na Cl溶液模拟盐胁迫条件,比较糜子发芽势、发芽率、芽长、根长、芽鲜重、根鲜重等指标的变化。结果]在盐胁迫下6个参试品种的芽长、根长、芽鲜重、根鲜重均低于对照,而发芽率均高于对照。与MZ-28、MZ-29、MZ-30相比,盐胁迫下MZ-5、MZ-11、MZ-14的发芽势、发芽率、芽长、根长、芽鲜重和根鲜重均较高。结论]综合分析认为,品种MZ-5、MZ-11、MZ-14耐盐性较强,而MZ-28、MZ-29、MZ-30耐盐性较弱。

Comparative Study on Salt Tolerance of Different Varieties of Broomcorn Millet at the Germination Stage

Objective] The aim was to study salt tolerance of different varieties of broomcorn millet and screen strong salt-tolerent varieties at the germination stage to provide references for breeding and and utilization of salt-tolerant varieties.Method] The germination potential,germination rate,shoot length,root length,shoot fresh weight,and root fresh weight of six varieties of broomcorn millet MZ-5,MZ-11,MZ-14,MZ-28,MZ-29, and MZ-30 under salt stress simulated by 180 mmol/L NaCl solution were compared.Result] The shoot length,root length,shoot fresh weight, and root fresh weight of six tested varieties under salt stress were lower than those of the control ,while their germination rate was higher than that of the control.Compared with varieties MZ-28,MZ-29,and MZ-30,the germination potential,germination rate,shoot length,root length,shoot fresh weight,and root fresh weight of varieties MZ-5,MZ-11,and MZ-14 under salt stress were higher.Conclusion] By comparison with varieties MZ-28,MZ-29,and MZ-30,the salt tolerance of varieties MZ-5,MZ-11,and MZ-14 is strong.