在凹叶厚朴大、小孢子发生和雌、雄配子体发育过程中存在部分败育现象。
The megasporogenesis and microsporogenesis and the development of their female and male gametophyte are partially abnormal.
目的：研究不同种源厚朴的化学特征，有效鉴别厚朴、凹叶厚朴及中间类型，建立新的厚朴药材的质量标准。
Objective: to study the chemical characteristic, to identify the different forms and to establish the new standard for the quality control of Cortex Magnoliae Officinalis.
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