子叶

Sporophyll concentrated on the branch for the end of the formation spherical or spike-like structure.

又称孢子叶穗。为孢子叶密集于枝末端而形成球状或穗状的结构。

Sporophyll The sporangium-bearing structure of vascular plants.

孢子叶：是维管植物中的产生孢子囊的结构。

The embryogenic calli could derive from epidermal and subepidermal cells of hypocotyl and cotyledons.

胚性愈伤组织起源于合子胚子叶和下胚轴的表皮及表皮下的一些细胞。

The FTIR analysis indicated that there was no or very little suberin in endodermis radial wall of cotyledon compared with primary and two-year-old leaves. Furthermore, the content of suberin in endodermis of the primary leaves was lower than that of two-year-old leaves.

根据FTIR的检测结果显示：子叶内皮层细胞径向壁不含木栓质或极少，2 a生针叶内皮层细胞径向壁木栓质含量高于初生叶。

Seeds with oily endosperm; cotyledons small, suborbicular.

种子具油性的胚乳；子叶小，近圆形。

Tartary buckwheat's scientific name is Tartarian Buckwheat, which belongs to Polygonaceae crop. It is a plant having medical and food function.

摘 要：苦荞麦俗称苦荞，学名鞑靼荞麦，属双子叶蓼科荞麦属植物，具有药食两用功能。

Seeds with bony tegument; endosperm thin; cotyledons oblate, rounded; radicle short.

种子有多骨的皮；胚乳薄；子叶扁球形，绕行；胚根短。

Its cotyledon node zone is telome elongation type .

结果表明：向日葵幼苗的子叶节区类型为顶枝伸长型。

Seed 1 and ± globose or seeds 2 and hemispheric, testa thin, cotyledons fleshy.

种子1 和多少球状或种子2和半球形的，瘦的种皮，子叶肉质的。

We studied the optimum medium and hormone combination of callus induction from cotyledons, subculture of callus, shoot regeneration from callus, shoot-extension induction, root induction and identified the chromosome number of the plantlet. The results showed that: MS+2,4-D 2.0mg/L+KT 0.5mg/L, MS＋2,4-D 2.5mg/L＋KT 0.5mg/L, MS+2,4-D 0+KT 1.0mg/L, MS+KT 0.5 mg/L and basal MS medium. One plantlet among twenty two was determined as a tetraploidy based on the plant morphology, observation of the leaf stoma and chromosome number of the root, other two plantlets represented morphological variation.

结果表明，诱导章丘大葱子叶产生愈伤组织、愈伤组织的继代培养、愈伤组织芽分化、芽点的伸长及诱导生根的最佳培养基及激素配比分别为：MS+2，4-D 2.0mg/L+KT 0.5mg/L、MS＋2，4-D 2.5mg/L＋KT 0.5mg/L、MS+2，4-D 0+KT 1.0mg/L、MS+KT 0.5mg/L和MS基本培养基；试管苗经驯化移栽后，共有22株成活，成活率为92%，对成活的再生植株进行形态学、叶片气孔及根尖染色体鉴定表明，共有3株发生变异，其中2株为外部形态上的变异，而另一株为染色体的加倍变异。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。