次生韧皮部

研究了卫矛科（Celastraceae）5属10种植物次生韧皮部的结构。

A comparative anatomical study on the secondary phloem of 5 genera , 10 species in Celastraceae was carried out .

根的次生韧皮部则由筛胞和韧皮薄壁细胞组成。

The secondary phloem consisted of sieve cells and phloem parenchymas .

PAS反应对多糖的组织化学定位结果显示在两种远志根的次生韧皮部和周皮中都有多糖物质的积累。

PAS reaction results showed polysaccharide were also existed in root periderm and secondary phloem of the two plants .

柏科四种植物次生韧皮部的比较解剖四合木（TetraenaMongolicaMaxim）叶片的比较解剖学研究

Comparative Anatomy of the Secondary Phloem in Four Species of Cupressaceae Comparative Anatomy Study on Leaves of Tetraena mongolica Maxim

杨柳科（Salicaceae）7种植物次生韧皮部的比较研究

Comparative studies on secondary phloem of 7 species in Salicaceae

部分裸子植物茎次生韧皮部和木材的比较解剖

Comparative Anatomical Studies of Stem Secondary Phloem and Wood of Some Gymnosperm

在茎中仅零星分布于次生韧皮部细胞。

While in branch , scarcely distributed in phloem cells .

漆树茎次生韧皮部超微结构的研究

Studies on the ultrastructure of secondary phloem in the stem of Rhus verniciflua Stokes

热带落叶树降香黄檀次生韧皮部薄壁组织细胞超微结构的季节变化

Seasonal Ultrastructural Changes of Secondary Phloem Parenchyma Cells in a Tropical Tree , Dalbergia odorifera

白皮松茎次生韧皮部中蛋白细胞的细胞化学研究

Studies on Cytochemistry of albuminous cells in secondary phloem of stem in Pinus bungeana Zucc

女贞和白蜡树的树皮结构及次生韧皮部发育的季节变化

Bark structure and seasonal variations of secondary phloem development in Ligustrum lucidum and Fraxinus chinensis

紫胶虫四种寄主树次生韧皮部与周皮的解剖学观察

The anatomy of secondary phloem and periderm of four host tree species of Laccifer lacca

内生真菌只在一定区域的皮层和次生韧皮部细胞中分布。

Endophytic fungi existed in the local cells of cork and secondary phloem in the root .

黄檀属两种树木形成层的活动周期和次生韧皮部的季节变化

Periodicity of cambium activity and seasonal changes of the secondary phloem in two species of Dalbergia

在横切面上，次生韧皮部的面积比次生木质部大得多。

In the transection section , the area of secondary phloem is much larger than secondary xylem .

其主要结果为：红豆杉科植物茎次生韧皮部由轴向系统和径向系统两部分构成。

The main results are as follows : The secondary phloem of Taxaceae is composed of axial and radial systems .

根据独活属植物根的次生韧皮部远比次生木质部发达的特点，确定独活属植物的根是典型的贮藏型根。

The secondary phloem is larger than the secondary xylem in the Heracleum , which is the typical storing root .

在美登木木栓层和次生韧皮部中分布有菌丝片段、膨大的菌丝、菌丝团及分生孢子；

Some segments of hypha , swelled hypha , pelotons and conidiophore were in colonies in cork and secondary phloem .

根上发育大量的不定芽，不定芽起源于次生韧皮部细胞。

A large number of adventitious buds could be seen on the roots , and the adventitious buds originated from the secondary phloem cells .

显微结构观测表明，盐胁迫对根和茎形成层细胞的活动和次生韧皮部和木质部细胞的分化产生显著影响。

The present results indicated the remarkable impact of salt stress on cambium cell activity and secondary xylem cell differentiation of both root and stem .

凹叶厚朴的树皮由外向内为周皮、皮层、初生韧皮部的纤维束和次生韧皮部。

The bark structure of Magnolia biloba , from external to internal parts , includes periderm , cortex , fibre bundies of primary phloem and secondary phloem .

用显微技术研究了海南岛天然分布和引种的23种落叶树木次生韧皮部的季节发育。

The seasonal development of secondary phloem of 23 species of deciduous trees distributed naturally or introduced on Hainan Island in tropical area of China was studied using microscopy .

有输导功能次生韧皮部内次生乳管列数目与有输导功能次生韧皮部厚度的比值这一参数在不同遗传背景或相同遗传背景的材料中都与胶乳产量显著正相关。

Ratio of secondary laticifer lines in secondary functional phloem to the width of secondary functional phloem was significantly positive correlated with rubber yield among rubber clones with or without same genetic background .

次生韧皮部由垂直系统的筛管、伴胞、韧皮薄壁细胞、石细胞、乳汁道以及水平（径向）系统的韧皮射线组成。

The vertical system of secondary phloem consists of sieve tubes , companion cells , parenchyma cells , stone cells and secretory ducts , and radial system were composed with the phloem rays .

第一圈额外形成层产生于次生韧皮部外侧的薄壁组织细胞和射线细胞，以后的每一圈由前一圈向外衍生的薄壁组织细胞产生。

The first ring of extra cambium developed from parenchymatous and ray cells outside the secondary phloem and each following ring of extra cambium developed from parenchymatous cells deriving from its previous ring of extra cambium .

维管组织中次生韧皮部所占根径的比例达46%，其薄壁细胞中内含物较丰富，次生木质部中分布有导管和木射线及少量木薄壁组织；

The secondary phloem occupied 46 % of the diameter of the root and the parenchymas cells had abundant inclusions . The secondary xylem consisted of vessels , and xylary radial and some xylary parenchyma cells .

老根由外向内依次为：周皮、次生韧皮部、形成层、次生木质部、初生木质部。在根中五叶木通木质部导管口径比三叶木通的大很多。

While for older roots , there are periderm , secondary phloem , cambium , secondary xylem and primary xylem . In root , the duct caliber of xylem in Akebia quinata ( Thunb . ) Decne .

随着茎的继续发育，维管形成层开始活动，由束中形成层产生次生韧皮部和次生木质部分子；而束间形成层仅产生薄壁细胞组成宽的射线。

With the progressive development of stem , the activity of vascular cambium began . The fascicular cambium differentiated into secondary xylem and secondary phloem , while the interfascicular cambium only differentiated into wide ray of parenchyma tissue .

不同年生西洋参主根随着参龄的增加，周皮、次生韧皮部和木质部面积均呈增长趋势，但韧皮部与木质部面积比自5：1下降至1：1。

With age increasing , the areas of periderm , secondary phloem and secondary xylem increase , whereas the area ratio of phloem and xylem decrease from 5:1 to 1:1 . One ring new secondary secretory canals increases in phloem every year .

筛管分子均为复筛板，端壁倾斜平均含有7－8个筛域.（2）两属植物在射线和晶体类型上有明显区别：柳属植物次生韧皮部无石细胞；

And sieve elements with compound sieve plates and oblique end walls bearing 7 to 8 sieve areas . ( 2 ) There are obvious differences between them in type or ray cells and crystals . Sclereids were not found in secondary phloem in Salix .