cotyledons

cotyledons

美 ['kɒtɪlidnz] 　英 ['kɒtɪli:dnz]

• n.子叶
• 网络子葉；胚子；分叶状

词形变化

复数：cotyledons  

英汉解释

n.

1. 绒毛叶,子叶

英英解释

n.	1. the first leaf, or one of the first pair of leaves, produced by the seed of a flowering plant. 2. a tuft of projections on the placenta of a mammal

例句

Hypocotyls The stem below the cotyledons, occupying the region between the cotyledon stalks and the point where lateral roots arise.

是子叶以下的胚轴部分，即子叶着生点与侧根出现位点间的区域。

During development of the seedling, the hypocotyl forms the lower portion of the stem from the radicle up to the cotyledons.

在幼苗发育期间，下胚轴从胚根到子叶的茎的下部形成。

Photosynthetic contribution of cotyledons to seedling growth was evaluated as well.

另外也对子叶光合作用对幼苗成长的帮助进行评估。

Cotyledons should pull in the end, about the size of the package when the hand to pull up, and its advantage is thin, tender, plump.

要把胚子拉到底，差不多大小，包的时候手要向上拉，它的优势是皮薄，肉嫩，丰满。

Guard cells length increased gradually while guard cell width did not change significantly during the development of cotyledons. 4.

子叶保卫细胞的长度随其发育而增大，但保卫细胞宽度保持稳定。

embryo with broad fleshy cotyledons completely united externally or not.

胚具宽的肉质的子叶在外部完全合生或者不。

Changes of physiology and biochemistry before and after differentiation of floral primordia in cotyledons of cucumber seedlings .

黄瓜花原基分化前后子叶的生理生化变化。

When the embryo differentiated cotyledons, the haustorium cells gradually degenerated, then disappear.

胚分化出子叶时，胚乳吸器自合点端向珠孔端退化。

Results showed that cultured cotyledons were more sensitive to hygromycin than to kanamycin.

经实验证明，离体培养的子叶对潮霉素的敏感性大于卡那霉素。

However, the epidermal cells of cotyledons, leaves and sepals were irregular with undulate anticlinal walls.

子叶、叶、花萼和果实上的表皮细胞呈无规则形，垂周壁波形。

Seed: embryo curved, cotyledons enclosing the endosperm, radicle elongated.

种子：胚弯曲，子叶包围胚乳，胚根拉长。

embryo straight, cotyledons recurved, enclosing the endosperm.

胚直，子叶下弯，包围胚乳。

family of flowering plants having two cotyledons (embryonic leaves) in the seed which usually appear at germination.

开花植物的一个属，种子具两片子叶（胚芽）

endosperm copious; cotyledons linear, flat, radicle superior.

胚乳丰富线形，平的子叶，上位的胚根。

radicle directed toward hilum, usually included between cotyledons.

胚根对着种脐，通常夹在2个子叶之间。

Stage I of seed development produces the radicle, which gives rise to the root, and the plumule, giving the shoot and cotyledons.

种子发育的第一个时期是形成胚根和胚芽，胚根形成根，胚芽形成茎和子叶。

Embryos erect, radicle directed downward, cotyledons fleshy.

胚直立，胚根向下指导，子叶肉质。

Third, foliar fertilizer: two cotyledons fully developed and reveal a new leaf and melon spray a subsequent Block stable.

叶面追肥：在两个子叶充分展开并露出一个新叶和瓜座稳后各喷一次。

Cotyledons orbicular, flat, or conduplicate; embryo curved.

外果皮肉质子叶圆形，平，或对折；

Cotyledons of mature seed from two cultivars "Qingzhou honey peach" and "Winter peach" were used as explant.

以青州蜜桃、冬桃成熟胚子叶为外植体，研究了利用子叶再生不定梢的适宜培养基。

Seed: embryo curved, cotyledons folded, enclosing the mealy endosperm.

种子：胚弯曲，子叶折叠，包围粉状的胚乳。

hypocotyl partly included between cotyledons.

下胚轴部分藏于子叶间。

A flowering plant with two embryonic seed leaves or cotyledons that usually appear at germination.

双子叶植物具有两片胚籽的或通常在萌芽上有双子叶的花卉植物

The placenta should be examined for missing cotyledons or blind vessels.

检查胎盘是否有小叶残余或断裂的血管。

Seed: embryo curved, cotyledons thin, broad, enclosing the thin endosperm.

种子胚弯曲，瘦的子叶，宽，包围薄的胚乳。

Of light, stripped of skin, a layer of film-that the endosperm in the cotyledons Jinguo outside.

体轻，剥去种皮，可见一层薄膜状的胚乳紧裹于子叶之外。

cotyledons incumbent, oblique, or accumbent.

子叶现任，偏斜，或者依着。

Dicotyledonae A class of flowering plants( phylum Angiophyta) characterized by having two cotyledons in the seed.

双子叶植物纲：显花植物的一个纲（隶属被子植物门），特征是在种子的胚内包含两片子叶。

Seed without endosperm; cotyledons fleshy, equal or unequal.

子叶肉质，相等的或不等长。

cotyledons thick and fleshy in exalbuminous seeds, thin in albuminous ones.

在无胚乳的种子里子叶厚并且肉质，在有胚乳的种子里子叶薄。

embryo erect, radicle terete, cotyledons oblong.

胚直立，胚根圆柱状的，子叶长圆形。

cotyledons large and broad, leaflike, compressed-flat or folded.

子叶大和宽，叶状，压扁平的或折叠的。

cotyledons ovate, radicle inferior.

卵形的子叶，下位的胚根。

Seedlings have cotyledons that are narrow and green to reddish in color.

幼苗有两个狭窄的颜色由绿渐变为淡红的子叶。

cotyledons incumbent or rarely accumbent.

子叶现任的或很少依着。

embryo small, arched, cotyledons thick, radicles small, papillate.

小的胚，拱起，厚的子叶，小，具乳突。

cotyledons fleshy, epigeous.

肉质的子叶，地上。

embryo(s) 1 to many, like cotyledons milky white, green, or rarely yellowish, germination hypogeous.

胚1到多数，与子叶同为乳白色，绿色，或很少淡黄色，萌发时不出土。

Cotyledons fleshy, usually with abundant oil.

肉质的子叶，通常具丰富的油。

cotyledons elliptic, base subcordate, apex rounded.

子叶椭圆形，基部近心形，先端圆形。