不同处理对青藏高原小麦种子萌发特性的影响

Effects of different treatments on seed germination characteristics of Hordeum aestivum L. from the Qinghai-Tibet plateau

为提高青藏高原小麦种子的产量及品质,探究小麦(Triticum aestivum L.)种子萌发的适宜条件.在恒温条件下,利用不同浓度(0.1、0.2、0.4mol/L)NaCl、Na2CO3、HCl分别处理小麦种子后进行种子萌发试验,以探讨不同试剂对小麦种子萌发率的影响.结果表明,不同浓度NaCl浸种12h后对小麦种子萌发具有不同程度的抑制作用;小麦种子萌发率随NaCl浓度的升高先升高后下降.不同浓度Na2CO3浸种12h后对小麦种子萌发的影响与NaCl相同,小麦种子萌发率随Na2CO3浓度的升高先升高后下降.不同浓度HCl浸种12h后对小麦种子萌发率的影响不同,HCl浓度为0.1mol/L时,小麦种子在10d内最高萌发率仅为23.1%;浓度为0.2mol/L时,HCl对小麦种子萌发有抑制作用;HCl浓度为0.4mol/L时,小麦种子萌发受到较明显抑制.

In order to improve seed yield and quality of wheat (Triticum aestivum L.) from the Qinghai-Tibet plateau,the suitable conditions for seed germination of wheat were explored.The seeds of wheat were separately treated with different concentrations (0.1,0.2,0.4 mol/L) of NaCl,Na2CO3 and HCl under constant temperature,in order to study the effects of different reagents on the seed germination rate.The results showed that,the seed germination of wheat was differently inhibited through different concentration of NaCl after soaking for 12 h.With the increasing of the concentration of NaCl,the seed germination rate of wheat increased firstly and then decreased.The effect of different concentration of Na2CO3 after soaking for 12 h on the seed germination of wheat was similar with NaCl.With the increasing of the concentration of Na2CO3,the seed germination rate of wheat increased firstly and then decreased. After soaking for 12 h,the different concentration of HCl had the different effect on the seed germination rate of wheat.When the concentration of HCl was 0.1 mol/L,the highest seed germination rate of wheat was 23.1% within 10 days.The germination of seed was inhibited when the concentration of HCl was 0.2 mol/L,and was obviously inhibited when the concentration of HCl was 0.4 mol/L.