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Bulletin of Botanical Research ›› 2017, Vol. 37 ›› Issue (6): 835-840.doi: 10.7525/j.issn.1673-5102.2017.06.005

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Effect of Exogenous SA on Germination and Physiological Characteristics of Meconopsis racemosa Seed

DA Qing-Jing, CHEN Xue-Lin, MA Wen-Bing, ZHANG Hai-Xian   

  1. Northwest Normal University, Lanzhou 730070
  • Received:2017-03-29 Online:2017-11-15 Published:2017-11-25
  • Supported by:
    Supported by the Central Government Public Health Special Found for Taditional Chinese Medicine([2011]76);National Industry Research Special Fund Traditional Chinese Medicine(201207002)

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

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