凯氏带

白皮松（Pinusbungeana）针叶内皮层凯氏带的结构特征、化学成分及其发育过程的研究

Casparian Strip in the Foliar Endodermis of Pinus Bungeana : Structure , Chemical Component and Development

删.912X。，（式中，Y凯氏带径向壁长度，为X；为木质部面积，XZ为韧皮部面积，X。为内皮层径向壁长度，X4为针叶长度）。

Xh X2 , X3 and X stood for area of xylem , phloem , length of radial wall of endodermis and length of needle , respectively .

应用冰冻切片、酶解分离、荧光显微技术和傅里叶红外光谱分析FTIR等手段，对华山松初生根和针叶内皮层凯氏带进行了分离、显微结构特征和化学成分的比较。

Casparian strips were isolated from primary roots and needles by enzymatic isolation , the cellular structure was observed under the fluorescence microscope and chemical characterization was analyzed by Fourier transform infrared ( FTIR ) spectroscopy .

内皮层未见凯氏带。

Inner Wild The Casparian strip is not clear in the endodermis .

茎有内皮层，凯氏带加厚明显。

Wall thickening ofCasparian strip is evident in its endodermis .

其内皮层细胞上凯氏带明显。

The endodermis had clear Casparian strips on its cells .

松科10属植物叶子内皮层具有凯氏带的新证据

Occurrence of Casparian strips in the leaf endodermis of 10 genera of pinaceae

初生根为四原型，内皮层明显，可见到凯氏带。

The primary root is tetrarch , and endodermis with casparian strip is obvious .

研究结果证明凯氏带并不是一个可以完全阻止离子进出的完美屏障。

The results suggest that CBs are not perfect barriers to apoplastic ion flux .

植物凯氏带的研究进展

Advances in Studies on Casparian Strips

植物根部的凯氏带和某些茎段含有木栓质、木质素或其他类似物质。

The Casparian strip in roots and some stems contains suberin , lignin , or similar substances .

内皮层凯氏带不明显，中柱鞘由一层细胞构成。

The pericycle consists of a uniseriate cylinder of cells and the casparian strips of endodermis are not very apparent .

根据内皮层细胞排列模式和凯氏带加厚程度，我们将松科的10属分成两大类。

In terms of arrangement patterns of endodermal cells and thickening mode of Casparian strips , two types could be identified among the leaves of ten genera .

智囊团的经济特质是显而易见的。结果表明：内皮层都具有凯氏带，幼根均具有明显的髓，初生木质部均为外始式四原型；

The economic feature is obvious . shows that of all types casparian strip exits in endodermis and evident pith does in young root ; primary xylem is exarch and tetrarch ;

内皮层有凯氏带，星状中柱，初生根二原型。

The Casparian strip is not obvious in the endodermis . It has actinostele , and primary xylem is diarch . The secondary structure of root of A. trifoliata includes periderm and secondary vascular tissue from the outer to the inner .