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。
2.
Juncaceae ( rushes ) a family of monocotyledonous plants , mostly herbs , with long , narrow grasslike or cylindrical leaves spirally arranged , but usually arising close to the ground 灯芯草科（灯芯草属） ） ：单子叶植物的一个科，多为草本，狭长扁平或柱状的叶呈螺旋状排列，通常簇生。
3.
Thickness is an effective feature for identifying corn from monocotyledonous weed , and the correctness was 90 % . ( 6 ) six shape features were used to design back - propagation network for weed identification and the network structure was 6 - 12 - 3 ( 6 )设计了用于杂草形状识别的bp网络，结构为6 - 12 - 3 ，并对学习误差、隐层结点数对网络性能的影响进行了研究。
4.
The correctness is over 99 % . ( 5 ) shape features studied were aspect , first invariant central moment , elongatedness , roundness , circularity and thickness . aspect and first invariant central moment are the most effective shape features for identifying monocotyledonous weed from dicotyledonous weed , and the correctness was 93 % ( 4 )利用修正的色度公式，由判别分析法确定色度阈值，对杂草图像进行阈值分割，能够有效地识别植物与非植物背景，正确识别率在99以上，但色度的计算量大于过绿特征的计算量，不利于杂草识别速度的提高。
5.
In this study , we constructed two plant expression vector with rip gene from barley and linked to two promoters which have high promoting efficiency in monocotyledonous plants , respectively , and then transferred to rice mediated by agrobacterium tumefaciens . the main factors of affecting transformation were investigated and established its regeneration and transformation systems . pcr analysis showed primarily that rip gene had already integrated into rice 本研究构建了分别由单子叶植物中启动效率较高的pact和p2 35s启动子调控的大麦核糖体失活蛋白基因( rip )的植物表达载体，通过农杆菌介导法转化水稻，经pcr检测初步验证了rip基因已导入水稻。
