Root tubercles in apostasiad orchids
Root tubercles in apostasiad orchids
复制标题
叛逆兰花的根瘤
DOI：
10.1002/j.1537-2197.1994.tb11468.x
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发表时间：
1994
影响因子：
3
通讯作者：
J. H. Warcup
中科院分区：
文献类型：
--
作者：
W. L. Stern;J. H. Warcup
Tubercles are swollen, stalked, warty branches arising from the main elongated roots of species in the terrestrial orchid genusApostasia (subfamily Apostasioideae). Generalized anatomy resembles that of the main roots, except tubercles lack a velamen and conductive strands are few. There are multinucleate cortical cells, and stomata occur in the epidermis. Pores of stomata appear to be permanently open and thus may enhance the interchange of gases between root tissues and soil under the moist conditions in which apostasias grow. Multicellular warts seem to function as holdfasts and are points of entry for mycorrhizal fungi.
