兰花种子在一个果实内有1300-4000000粒,胚仅是未分化的细胞群,不具有发芽时供营养用的胚乳;因此,不像其它种子那样容易发芽。从上一世纪前半期兰花栽培兴盛时期开始,经营兰花栽培与研究工作者就十分关心兰花种子发芽问题。到上一世纪末,证实了兰花自然实生苗的根部存在根菌,由此考虑到其根菌与种子发芽的关系。本世纪初期,法国Bernard和德国Burgeff从根部分离出兰花种子与菌共生而发芽的真菌,研究了所谓共生发芽(symbiotic germination)。由于用人工方法进行发芽需要专门的技术,能否取得成功 Orchid seeds in 1300-4000000 within a fruit, the embryo is only an undifferentiated cell population, does not have germination for nutrition endosperm; therefore, unlike other seeds as easy to germinate. From the beginning of the orchid cultivation and flourishing in the first half of the first century, operators of orchids and researchers are very concerned about the germination of orchids. By the end of the last century, it was confirmed that roots were present in the roots of natural orchid seedlings, thereby considering the relationship between their root bacteria and seed germination. In the early part of this century, France Bernard and Germany Burgeff isolated the symbiotic and germinating fungi of orchid seeds from the roots and studied the so-called symbiotic germination. Due to the artificial method of germination requires specialized technology, can succeed