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汉语拼音：dān zi yè zhí wù

被子植物的一大类。种子的胚只有一片子叶。多为须根系；茎部维管束无规则地分散排列，通常无形成层；叶片多为平行脉、弧形脉；花的各部分为三数。约有六万五千种，大多为草本。如稻、麦、玉米、甘蔗、棕榈等。

• Only dicotyledonous flowering woody plants and most gymnosperms have true twigs; monocotyledons and tree ferns do not.

  只有双子叶的木本开花植物和大部分的裸子植物才有真正的小枝，而单子叶植物和树蕨类植物则没有。

• In a monocotyledonous plant , the same role is played by the scutellum , as in a cereal grain .

  在一个单子叶植物中，同样的作用由盾片来承担，如在一个谷粒中。

• This paper mainly introduces the regulatory mechanism of flowering for dicots represented by Arabidopsis and monocots represented by rice.

  本文首先阐述了以拟南芥为代表的双子叶植物和以水稻为代表的单子叶植物的开花调控机理及其异同。

• a monocotyledonous grass of the family Gramineae (has only one species).

  禾本科的一个单子叶植物属（只有一个种）。

• monotypic family of aquatic plants having narrow leaves and small flowers.

  水生单子叶植物的一科具有窄小的叶子和小花。

• dwarf mutants that are caused by other defects are relatively rare, especially in monocot species.

  由其他缺陷引起的矮化突变体相对较少，尤其在单子叶植物中。

• a monocotyledonous genus of the family Iridaceae.

  鸢尾科的一个单子叶植物属。

• sclerenchyma is an elastic tissue that is found in both Monocotyledons and Dicotyledons.

  厚壁组织有弹性且于单子叶植物及双子叶植物皆可见。

• Besides, they showed well effects on controlling some mono-cotyledon diseases such as Powdery Mildew, Leaf Spot of Corn and Downy Mildew.

  对玉米等单子叶植物上的白粉病、叶斑病、霜霉病等也有很好的诱抗效果。