欢迎访问《农学学报》，
农学学报

农学学报 ›› 2011, Vol. 1 ›› Issue (6): 12-15.

所属专题： 生物技术

• 农艺科学 生理生化 • 上一篇    下一篇

不同浓度的水杨酸处理对木槿种子萌发和幼苗生理特性的影响

崔继光   

  • 收稿日期:2011-07-06 修回日期:2011-07-07 出版日期:2011-08-15 发布日期:2011-08-15

The Effect of Different Concentration of Salicylic Acid on the Seed Germination and Physiological Characteristics of Hibiscus syriacus Linn.

  • Received:2011-07-06 Revised:2011-07-07 Online:2011-08-15 Published:2011-08-15

PDF (PC)

1875

摘要：

为了研究水杨酸对木槿种子萌发及子叶生理活性物质的影响，试验在无土栽培条件下进行，设置4个水杨酸浓度处理，即S1：30 mg/L，S2：60 mg/L，S3：120 mg/L，S4：240 mg/L，1个对照（CK），3次重复。结果表明：木槿种子发芽率、发芽势在0~60 mg/L范围内逐渐升高，浓度高于120 mg/L时降低；S1处理胚根加长生长量高于对照，其余处理低于对照；S1处理子叶内电导率高于对照，其余处理低于对照；所有处理丙二醛含量随处理浓度的增加而增加，保护酶活性均低于对照；水杨酸处理可以提高子叶内脯氨酸含量，降低可溶性糖含量；水杨酸浓度在30~120 mg/L范围内可以提高可溶性蛋白含量，浓度达到240 mg/L时降低可溶性蛋白含量。综合分析认为，60~120mg/L的水杨酸处理对促进种子发芽以及提高幼苗抗性作用良好。

关键词: 积温, 积温, 变化趋势, 农作物生长, 重庆

Abstract:

In order to study the effect of different concentration of salicylic acid on the seed germination and physiological characteristics change of Hibiscus syriacus Linn., the author tested under soilless culture, set 4 concentration of SA treatments that S1--S4 were 30 mg/L, 60 mg/L, 120 mg/L, 240 mg/L, respectively. A control, 3 times repeated. The results showed that: the seed germination rate and germination of Hibiscus syriacus Linn. in the 0-60 mg/L range gradually increased and when SA concentration was higher than 120 mg/L, that became lower; S1 treatment radicle extension growth and conductivity within the cotyledons was higher than the control and other treatment lower than the control, MDA was increased with the SA concentration increased, protection enzymes activity were lower than the control; when used SA can improved proline content in cotyledons and reduced soluble sugar content; when SA Concentration in 30-120 mg/L range could increase the soluble protein content and when reached 240 mg/L soluble protein became lower. By comprehensive analysis, when SA concentration was in 60-120 mg/L, the seed germination could be promote and seedling resistance improved.