Zhao Rong-mei, Liu Li, Guo Qiao-sheng
Institute of Chinese Medicinal Materials, Nanjing Agricultural University, Nanjing 210095, China.
Zhongguo Zhong Yao Za Zhi. 2006 Jun;31(12):966-8.
To study of exogenous substances on the germination rate of Platycodon grandiflorum and offer the basis for the standardized culture of P. grandiflorum.
At 25 degrees C, under darkness and lightness, do pretreatmeats on seeds by using GA3, H2O2, KMnO4, PEG at different concentrations.
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.
Pretreatment with 50-250 mg x L(-1)GA3 and H2O2 at a low cencontration could increase the seed germination of P. grandiflorum.
研究外源物质对桔梗种子发芽率的影响，为桔梗规范化栽培提供依据。
在25℃、黑暗和光照条件下，用不同浓度的赤霉素（GA3）、过氧化氢（H2O2）、高锰酸钾（KMnO4）、聚乙二醇（PEG）对种子进行预处理。
结果表明，50 - 250毫克/升的GA3和1% - 2%的H2O2预处理能在一定程度上提高桔梗种子的发芽率。相反，0.1% - 0.5%的KMnO4和15% - 35%的PEG抑制发芽。
50 - 250毫克/升的GA3和低浓度的H2O2预处理可提高桔梗种子的发芽率。
