外源水杨酸对总状绿绒蒿种子萌发及生理特性的影响

doi:10.7525/j.issn.1673-5102.2017.06.005

摘要/Abstract

摘要： 以总状绿绒蒿（Meconopsis racemosa Maxim.）为实验材料，通过不同浓度水杨酸（SA）浸种处理，研究了SA在不同温度条件下对总状绿绒蒿种子萌发质量和相关生理特性的影响。结果表明，在5~30℃条件下，对总状绿绒蒿种子萌发都有不同程度影响，但在15~25℃条件下，萌发效果比较显著（P<0.05），其中20℃萌发效果极为显著（P<0.01）；0.1~1.0 mmol·L^-1 SA浸种预处理明显促进了总状绿绒蒿种子的萌发，其萌发指数、发芽势、萌发率在0.1~0.7 mmol·L^-1 SA范围内呈显著增长趋势，其中0.7 mmol·L^-1 SA处理效果极为显著（P<0.01）；（3） SA浸种后总状绿绒蒿种子内可溶性蛋白质和脯氨酸含量的变化同种子的萌发和生长呈相似趋势，用0.7 mmol·L^-1 SA处理后，种子内可溶性蛋白质和脯氨酸的含量达到最高。通过SA浸种可以提高总状绿绒蒿种子的萌发率；并且SA在高温和低温条件下对其萌发有一定的缓解作用。

关键词: 总状绿绒蒿, 种子, 水杨酸, 温度, 萌发, 生理特性

Abstract: With the seed of Meconopsis racemosa Maxim. through the different concentration of salicylic acid(SA) seed handling, we studied the effect of SA under different temperature conditions on M.racemosa Maxim. seed germination quality and related physiological characteristics. Under 5-30℃, M.racemosa Maxim. seed germination has different degree of influence, but under the condition of 15-25℃, seed germination effect is significant(P<0.05), of which 20℃ germination effect is extremely significant(P<0.01). The pretreatment of 0.1-1.0 mmol·L^-1 SA significantly promoted the germination of the seed of M.racemosa Maxim., of which 0.7 mmol·L^-1 SA treatment effect is very significant(P<0.01). After soaking with SA, the soluble protein and proline content appear similar trend with seed germination and growth of M.racemosa Maxim., and the contents of soluble protein and proline were the highest in the seeds treated with 0.7 mmol·L^-1 SA. SA soaking could improve the germination rate of M.racemosa Maxim. seed, and there was the relief by SA soaking under high temperature and low temperature.

Key words: Meconopsis racemosa Maxim., seed, salicylic acid, temperature, germination, physiological characteristic

中图分类号:

Q949.748.1

达清璟, 陈学林, 马文兵, 张亥贤. 外源水杨酸对总状绿绒蒿种子萌发及生理特性的影响[J]. 植物研究, 2017, 37(6): 835-840.

DA Qing-Jing, CHEN Xue-Lin, MA Wen-Bing, ZHANG Hai-Xian. Effect of Exogenous SA on Germination and Physiological Characteristics of Meconopsis racemosa Seed[J]. Bulletin of Botanical Research, 2017, 37(6): 835-840.

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