Effect of Seed Soaking with Exogenous NO on Seed Germination and Physiological Characteristics of Allium mongolicum Regel.under NaCl Stress

doi:10.7668/hbnxb.2011.02.043

Abstract

Abstract: In order to investigate the effects of seed soaking with exogenous NO on seed germination,activities of antioxidant enzymes of AUium mongolicum Regel.under NaCI stress.The experiment used the seed of A.mongolicum as experiment material to explore the effect of different concentrations of NO soaking different times on A.mongolicum seed germination,hypocotyl,radicle length and dry weight,a8 well as the effect of SOD,CAT,POD,APX and content of MDA.In our study,the soaked seeds with 0.40 mmoL/L NO for 3 hours could significantly(P<0.05)enhance the germination percentage,germination rate,germination index,vigor index,length and dry weigh of cotyledon and radicle,meanwhile this treatment could increase the activitvies of antioxidant enzymes：SOD,CAT,POD,APX additionally under NaCI stress,lipid proxidation of the seed of A.mongolicum W88 promoted,therefore the content of MDA was increased,but oxidative damage of seed is relieved under the treatment of 0.40 mmol/L exogenous NO and lipid proxidation was reduced.

Key words: AUium mongolicum Regel, Seed germination, NaCI stress, Antioxidant enzymes, Exogenous NO

CLC Number:

Q949.71

LU Ying, WANG Ping, SONG Zhao-wei. Effect of Seed Soaking with Exogenous NO on Seed Germination and Physiological Characteristics of Allium mongolicum Regel.under NaCl Stress[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2011, 26(2): 207-212. doi: 10.7668/hbnxb.2011.02.043.

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