髓射线

显微解剖椴树产卵室和受害韧皮组织，观察其卵室和卵的变化情况，揭示了韧皮射线与髓射线流出物不仅作用雏形卵室，而且直指卵表面及卵孔。

Through anatomizing oviposition room and damaged phloem tissue in Tilia mongolica and observing the changing situation of oviposition room and eggs , phloem ray and outflow from medullary ray not only play role on miniature oviposition room , but also directly point towards surface of egg and micropyle .

从横切面上观察到，不定根原基起源于髓射线与维管形成层交叉的部位。

From cross sections of stems-cuttings , a primordium of adventitious roots originates from the cross region of pith rays and vascular cambium .

白皮松的根原始体属于诱导原始体，产生于维管形成层、韧皮组织与髓射线的交叉区域；

The root primordium of Pinus bungeana belongs to induced primordium , which is formed from the cross region of vascular cambium , phloem tissues and pith rays .

当如此精确的加工吉他面板时，其髓射线和生长纹理线是垂直的。

When done accurately this method of processing guitar tops yields wood that displays the medullary rays that run at a right angle to the growth of the grain .

在初生生长过程中，部分髓射线薄壁细胞转变为异常形成层束，异常形成层束再分化产生新的维管束。

In the course of primary growth and secondary growth , a few cells of pith ray turn into anomaleus cambium bundles , the anomaleus cambium bundles form new vascular bundles .

诱导生根后，不定根原基起源于形成层，特别是髓射线正对的形成层部分，属于诱生根原基型；

After root induction , the primordia of the adventitious roots originated in the cambium , especially the cambium part over against the pithy rays , thus then they were induced root primordia ;

髓射线也是一个重要的显色部位，三叶木通的根和茎都拥有很宽阔的髓射线，从幼嫩茎尖到老茎、老根都能看到此区域强烈显色。

Pith is also an important colored part . The root and stem of A. trifoliata have broad pith ray and it can be strongly colored in this aero no matter infancy stem , old stem or old root .

四倍体刺槐嫩枝茎内无潜伏根原基，不定根由诱生根原基发育形成，诱生根原基源于髓射线细胞的分裂和分化。

There are also no latent root primordium in the stem of Robinia pseudoacacial ( 4n ) twig , adventitious root is formed by mutagenic root primordium growth , which sourced the fission and division of the medullar-ray cell .

证实诱导生根过程中核桃嫩茎不定根原基发生于形成层，特别是髓射线正对的形成层部分；根原基起始分化期为诱导第6天左右，伸长期是第10天；

It was identified that the adventitious root primordia of in vitro shoot originated from the vascular cambium cells , especially , the cross areas of cambium and pith ray and they started to differentiate at the 6th day and lasted to the 10th day .

初生分生组织由原表皮、基本分生组织和原形成层组成。初生分生组织的衍生细胞分化形成茎的初生结构，包括表皮、皮层、维管束、髓和髓射线。

The primary structure consisted of epidermis , cortex , vascular system , pith and pith ray .

在叶中，皂苷类成分主要存在于叶肉的栅栏组织和海绵组织；在茎中，主要存在于韧皮部、髓和髓射线中；在根中，主要存在于韧皮部和髓射线中。

There are mainly in the palisade tissue and spongy tissue of leaves and pith and pith ray of stems and phloem and pith ray of root .

该植物茎与根茎的构造相似，均有表皮、皮层、淀粉鞘、周维纤维、六束维管束、髓及髓射线。

Having the epidermis , cortex , starch sheath , perivascular sclerenchyma , six vascular bundles , pith and pith ray , the stem is similar to the root in their structure .