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Effects of PEG(Polyethylene Glyco) on seeds germination of richosanthes kirilowii
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HE Jia-qing1,2,HUANG Xun-duan1,2,LI Cheng-ji1,SHI Zhong-hui3
(1.School of Life Sciences,Anhui University,Hefei 230039,Anhui,China;2.Anhui Key Laboratory of Eco-engineering and Bio-technique,Hefei 230039,Anhui,china;3.Government of Jixi County,Anhui Province,Jixi 245300,Anhui,China)
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Absract:In this paper,15% PEG was applied to soak the seeds of Trichosanthes kirilowii for 24h in order to promote its germination.The results show that PEG could decrease osmotic pressure of water and change reactions of physiology and biochemistry in seeds effectively.For example,PEG could bring the high activity of amylase consecutively,and increase the content of dissoluble protein and the activity of,it might be said that PEG pretreatment could improve metabolic activity and reduce accumulation of POD (Peroxidase),but decrease the content of MDA (Malondialdehyde) in seeds. Based on the experiment free radical,and make cell membrane system less damage in course of absorbing water in seed,too.All these indicate that PEG can increase seed vitality and germination capacity.
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