Palisade parenchyma takes a larger proportion than spongy tissue in mesophyll . different from other dicotyls , the cortex in c album l . is composed of mechanical tissue and assimilating tissue , which are alternately arranged with each other 藜与其它双子叶植物不同，其茎的皮层呈明显的机械组织和同化组织相间排列，其中同化组织形态类似海绵组织细胞；机械组织突起成棱。
The content and distribution of silica . activity and location of pod on the leaves of rice and cucumber were studied by means of localization and quantitlive analysis . the content of si and activity of pod were higher from + si leaves than that from - si leaves in these plants . and that in creased with the ages of leaves 本文以单子叶植物水稻和双子叶植物黄瓜为材料，对硅元素的分布及相应的pod酶活性进行定位，定量分析，结果显示加硅培养的植物叶片硅含量及过氧化物酶含量均高于不加硅处理，并且硅含量与过氧化物酶随着叶龄增加而增加。
In gmnr , so far a total of 1030 vascular species in 536 genera of 169 families have been listed , 141families , 486 genera , 949 species ( including intermination taxa , similarity hereinafter ) of the spermatophyta , including 4 families , 4 genera , and 7 species of the gymnospermae , and 137 families , 482 genera , 942 species of the angiospermae - - - - - - the dicotyledonae 117 families , 374 genera , 755species , and the monocotyledonae 20 families , 108 genera , 187 species 本文是对广东省古兜山自然保护区种子植物区系的组成与基本特点的研究，现知古兜山共有野生维管植物169科536属1030种(蕨类植物28科50属81种，裸子植物4科4属7种，双子叶植物117科374属755种，单子叶植物20科108属187种) ，具有部分古老孓遗种，以木本植物为主，其次为草本，藤本不多。
Glyphosate is a foliar applied , broad spectrum , post - emergence herbicide capable of controlling annual and perennial grasses and dicotyledonous weeds . due to the similarity structure between glyphosate and phosphoenolpyruvate , glyphosate can inhibit epsp synthase by rivalrously uniting epsp synthase with phosphoenolpyruvate 草甘膦是一种施用于叶片的、广谱的、非选择性的、后现性的有机磷类除草剂，它对于许多一年生和多年生杂草和双子叶植物都有极强的控制能力。
These results show that coda gene cloned from e . coli can express specifically in the anther of both monocotyledon and dicotyledon plant species upon induction of 5 - fc , and the in vivo expression product of the gene can transform the 5 - fc used externally into 5 - fu , which leads to all or partial inactivity of anthers and / or pollens 以上结果表明， coda基因在单子叶植物和双子叶植物花药中的特异性表达，能将外用的5 - fc在体内转化为5 - fu ，导致花药或花粉的部分和全部失活。
