子叶

Many of the embryoids were abnormal , such as monocotyledon and polycotyledon.

部分体胚有畸形的表现，单子叶、多子叶、子叶联合。

Vascular tissue of the cotyledonary-stage somatic embryos from the two cotyledons to radicle presented V or Y shape.

子叶胚的维管组织从两片子叶伸向胚根，呈V形或Y形。

The EST enzyme activity was higher in the sporophyll than that in the stems and leaves.

孢子叶EST酶活力要较茎和叶的酶活力强很多，3种裙带菜孢子叶中EST酶活力相同。

Variation of tetraploidy was observed among the regenerants from culture of immature cotyledons,cotyledons and leaves of melon seedlings.

甜瓜未成熟子叶、幼苗子叶和真叶离体培养的再生植株中存在着明显的四倍体变异，比率分别为30%、16.2%和 42.9%。

DNA C-values might be one of important indices in the evaluation of angiospermous invasiveness. To test this viewpoint, we compared DNA 1C-values and basic genome sizes in 3,676 angiosperms. The results suggest that:(1) the two nuclear values vary greatly among different groups, e.g., significantly higher in herbs than in trees, in monocots than in dicots, in perennials than in non-perennials;(2) the two nuclear values both have significant effects on plant invasiveness, especially in herbs, dicots, monocots, perennials, non-perennials, diploids, polyploids, Compositae, and Poaceae, while not significant in trees and Fabaceae.

DNA C值与被子植物入侵性密切相关，为考察应用DNA C值评估被子植物入侵性的可靠性和局限性，我们统计分析了全世界范围内3676种被子植物的DNA 1C值（配子未发生DNA复制时的染色体DNA含量）及基因组大小（单个染色体组的DNA 含量），结果表明：1）DNA 1C值和基因组大小在被子植物不同类群中差异极大，例如在草本植物中显著高于木本植物，单子叶植物显著高于双子叶植物，多年生植物显著高于非多年生植物；2）两项指标都与被子植物入侵性显著负相关，尤其是在草本植物、双子叶植物、单子叶植物、多年生植物、非多年生植物、二倍体、多倍体、菊科和禾本科中，然而在木本植物、豆科植物中其与植物入侵性无显著关系。

Seeds arillate, compressed, testa pitted; endosperm oily, abundant; embryo straight; cotyledons elliptic or oblong-elliptic; germination epigeal.

种子具假种皮，压扁，具洼点；胚乳油性，丰富；胚直立；子叶椭圆形或长圆状椭圆形；发芽时子叶出土。

The seeds of Impatiens balsamina L. were carried by spacecraft Shenzhou 4 on December 30, 2004 which flew for 6 days and 19 hours.

神舟4号搭载的凤仙花种子经种植后获得SP3种子，发现SP3代子叶发生变异现象，在苗期的子叶数目和形态呈多种变化。

Fruit a usually solitary follicle, sessile or stipitate, dehiscing usually along adaxial suture, sometimes along abaxial one, very rarely circumscissile at base, sometimes indehiscent.

果通常为单生的蓇葖果种子1(或者2)，直立，通常具假种皮，很少无假种皮；种皮厚假种皮有色，肉质；胚乳宿存或无；胚直立；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。

Multiple comparisons suggested that cotyledon with petiole or 1/4 piece of cotyledonary laminae from 7 days old aseptic seedling had much higher shoot regeneration frequency, reaching to over 90%.

多重比较结果表明，以7d苗龄无菌苗的带柄子叶或1/4子叶片为外植体较好，出芽率较高，达90%以上。

After 7 d, the uniform-sized seedlings were selected, their cotyledons removed and cuttings made 3.5 cm below the cotyledonary node, keeping the above epicotylar portion intact.

经过7个D ，统一大小的幼苗被选定的，取消其子叶和剪报作出三点五厘米低于子叶节，保持上述epicotylar部分完好无损。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。