摘要
以西藏自治区5个青稞(Hordeum vulgare L. var. nudum Hook. f.)品种为试验材料,研究不同NaCl浓度对青稞种子萌发及幼苗生长的影响,并且对不同青稞品种耐盐性进行评价分析。结果表明,NaCl浓度为0.1%时对青稞萌发及幼苗生长具有一定的促进作用;当浓度增至0.5%时,种子的发芽势、发芽率、活力指数以及幼苗的根长、芽长、根鲜重均显著下降;当浓度为1.0%时,隆子黑青稞与苟芝紫青稞已丧失发芽能力。总体来看,5个青稞品种中,喜拉22耐盐性最好,其次是藏青320、藏青2000、苟芝紫青稞,隆子黑青稞耐盐性最弱。
Taking 5 highland barley(Hordeum vulgare L. var. nudum Hook. f.) varieties in Tibet as experimental materials,the effects of different NaCl concentrations on seed germination and seedling growth of highland barley cultivars were studied,and the salt tolerance of different highland barley varieties was evaluated and analyzed. The results showed that under the0.1% low concentration of NaCl, the germination and seedling growth of highland barley were promoted. When the concentration increased to 0.5%, seed germination potential, germination rate, vigor index and root length, bud length and root fresh weight of seedlings decreased significantly. When the concentration was 1.0%, Longzi black highland barley and Gouzhi purple highland barley had lost germination ability. Overall, among the 5 highland barley varieties, Xila 22 had the best salt tolerance, followed by Zangqing 320, Zangqing 2000, Gouzhi purple highland barley, and Longzi black highland barley had the lowest salt tolerance.
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