单词 | dictyogenous layer |
释义 | > as lemmasdictyogenous layer 2. Designating a layer of meristematic tissue in certain monocotyledonous plants (esp. pineapple) from which adventitious root growth occurs, esp. in dictyogenous layer. ΚΠ 1883 Jrnl. Royal Microsc. Soc. 3 241 The dictyogenous layer, developes [sic] also a special system of fibrovascular bundles intermediate between the root and the stem. 1900 B. D. Jackson Gloss. Bot. Terms 77/1 Dictyogenous layer, a layer of meristem general in monocotyledons, which gives rise to the central ‘body’ and cortex of the young roots. 1949 Bot. Gaz. 110 552/1 The adventitious roots in the pineapple stem originate partly in the dictyogenous layer which lies at the boundary between the cortex and stele and partly in the innermost layers of the cortex. 2000 D. H. Benzing Bromeliaceae ii. 48 Roots originate in the previously mentioned ‘dictyogenous’ zone within about 1 cm of the shoot apex in pineapple. < as lemmas |
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