Several specific genes from phloem had been cloned.

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Using electronic microscopy,the development of secondary phloem SE was investigated in Populus deltoides.

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Results The volume of phloem fiber cell of pulvinus was enlarged at sleeping situation but at awakening situation.

結(jié)果］睡眠狀態(tài)下的葉枕部韌皮纖維細(xì)胞體積增大，而覺醒狀態(tài)下的葉枕部韌皮纖維細(xì)胞體積縮小。

To do some researches on the physiological function of sieve tube elements in secondary phloem,it is key to observe the changes of plasm components during the development of SE.

觀察次生韌皮部篩管分子發(fā)育過程中原生質(zhì)組分的變化97久久综合亚洲色HEZYO，對(duì)于研究篩管的生理功能具有重要作用免费黄在线看。

PXY is expressed within dividing meristematic cells of the procambium, whereas CLE41 localises to the adjacent phloem cells.

PXY在分裂中的原形成層分生細(xì)胞中表達(dá)，而CLE41定位于毗連的韌皮部細(xì)胞A片免费网在线观看网址入口。

Actinostele A rype of protostele in which the xylem is star shaped and the phloem lies between the points of the star.

星狀中柱：原生中柱的一種類型国产黄色片一级片。木質(zhì)部是星形的，韌皮部位于星形之間免费观看黄、色一级视频。

The research of recent years shows that phloem loading and unloading of plant photoassimilate both have symplasmic and apoplasmic pathways. Sugars transported by loading mainly are:(1) raffinose and its analogue,(2) sucrose.

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Aphids belong to Diptera insect pests; they damage plants directly by sucking juice of phloem, and indirectly by spreading plant disease. The plant lectins are proteins that bind reviviscence to specific mono- or oligosaccharides; therefore they have potential in plant genetic engineering.

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For the BM-rice,the sclerenchyma of leaves was shrunken,vascular bundle of leaves was reduced,the strumae of outer epidermis of stem was sparse and the link of phloem of root was loosed and dispersed.

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Sieve element A vascular cell in the PHLOEM, whose function is to transport sugars and other nutrients from the site of production to the site of utilization or storage.

篩分子：植物韌皮部的管狀細(xì)胞亚洲黄色网站视频网站，其功能是將糖類和其它營養(yǎng)物質(zhì)由產(chǎn)生地運(yùn)送至被利用或儲(chǔ)存的地方。