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在我国北方地区,圆柏(Sabina chinensis(L.)Ant.)扦插繁殖成活率低,生根较慢。在近几年的生产实践中,发现有些树的一些枝条上有一些大小不等的丘状突起,用这种带有丘状突起的枝条作插穗,其成活率极高,试验可达100％,生根天数平均只有12天。关于被子植物不定根的发生部位和形成过程,在以往的文献中已有一些记载,但对于裸子植物不定根尚缺少形态发生学上的描述。本文就裸子植物圆柏先成不定根原基的
In northern China, Sabina chinensis (L.) Ant.) Has low rate of cuttage propagation and slow rooting. In recent years of production practice, found that some of the branches of some trees have some sizes of lumps, with the branches with mound protrusions for cutting, the survival rate is extremely high, the test up to 100% , Rooting days average only 12 days. About angiosperms of adventitious roots of the site and formation process in the literature have been recorded in the past, but the adventitious roots of gymnosperms is still lack of morphological description. In this article, gymnosperm progenitor adventitious root primordia