不同醇溶液对青稞种子萌发及生长的影响

Effects of different alcoholic solutions on seeds germination and seedling growth of highland barley

为促进青稞(Hordeum vulgare var. coeleste L.)种子的活力和幼苗产量,研究了不同醇溶液(1%的甲醇、乙醇、丙醇、正丁醇)对青稞种子萌发及幼苗生长的影响。结果表明,与对照相比,1%不同醇溶液处理对青稞种子萌发和幼苗生长具有明显影响。1%甲醇对青稞种子的萌发和幼苗生长均起促进作用,其发芽率、发芽势、发芽指数分别比对照组高1.11、1.11个百分点和1.12,幼苗叶绿素a、叶绿素b、总叶绿素分别比对照组高0.013 7、0.000 4、0.000 7 mg/g,以及幼苗的苗高、根长分别比对照组高2.15、3.51 cm;1%乙醇溶液也对种子萌发有明显促进作用,且效果优于1%甲醇溶液,其发芽率、发芽势、发芽指数分别比对照组高4.44、5.56个百分点和6.86,但1%乙醇溶液抑制青稞幼苗的生长;1%丙醇、1%正丁醇溶液则对青稞种子的萌发及幼苗生长都起不同程度的抑制作用,1%正丁醇溶液抑制程度最强。研究表明,1%甲醇溶液对青稞种子的萌发及幼苗生长均起到促进作用。

To promote seeds vigor and seedling yield,the effects of 1% methanol solution,1% ethanol solution,1% propanol solution and 1% n-butanol solution on seeds germination and seedling growth of highland barley(Hordeum vulgare var. coeleste L.)were investigated. Results showed that there were significant effects on seeds germination and seedling growth of highland barley by treatment with 1% different alcoholic solutions compared with the control. The seeds germination and seedling growth of highland barley were significantly promoted by 1% methanol solution. The germination rate,germination potential and germination index of the seeds treated by 1% methanol solution were 1.11,1.11 percentage points and 1.12 higher than those of the control,respectively. The chlorophyll a,chlorophyll b and total chlorophyll of the seedlings were 0.013 7,0.000 4 and 0.000 7 mg/g higher than those of the control group,respectively. The seedling height and root length of the seedlings were 2.15 and 3.51 cm higher than those of the control group,respectively. 1% ethanol solution also significantly promoted the germination of the seeds,and the promoted effect was better than that of 1%methanol solution,whose germination rate,germination potential and germination index were 4.44,5.56 percentage points and 6.86higher than those of the control,respectively,but 1% ethanol solution inhibited the growth of highland barley seedlings. 1% propanol solution and 1% n-butanol solution inhibited the seeds germination and seedling growth of highland barley in different degrees,and1% n-butanol solution had the strongest inhibition. All in all,1% methanol solution could significantly promote the seeds germination and seedling growth of highland barley.