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[Influence of exogenous substance on germination of Platycodon grandiflorum seeds]
Rong-mei Zhao1, Li Liu, Qiao-sheng Guo
1Institute of Chinese Medicinal Materials, Nanjing Agricultural University, Nanjing 210095, China.
Objective:
To study of exogenous substances on the germination rate of Platycodon grandiflorum and offer the basis for the standardized culture of P. grandiflorum.
Method:
At 25 degrees C, under darkness and lightness, do pretreatmeats on seeds by using GA3, H2O2, KMnO4, PEG at different concentrations.
Result:
The results indicated that the pretreatments with GA3 at a concentrating of 50-250 mg x L(-1) and 1%-2% of H2O2 could increase germination of P. grandiflorum seed at a certain degree. Contrariwise 0.1%-0.5% of KMnO4 and 15%-35% of PEG inhibited the germination.
Conclusion:
Pretreatment with 50-250 mg x L(-1)GA3 and H2O2 at a low cencontration could increase the seed germination of P. grandiflorum.
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