查询词典 cotyledon

Cucumber cotyledon ; methionine ; imbibition ; DNA methylating ; flowering of cultures of detached cucumber

黄瓜子叶；甲硫氨酸；浸种； DNA甲基化；子叶培养物成花

A DNA demethylating agent. This finding suggests that Met induce the flowering of detached cotyledon culture perhaps through acting as a methyl donor of DNA methylating not as the precursor of ethylene synthesis.

上述结果说明：10^(-5)M Met浸种3 h能显著促进子叶培养物的花芽形成，Met对离体子叶成花的诱导作用可能是作为甲基供体通过DNA甲基化途径来实现的。

In order to explain clearly the variation status of embryo from tetrapoid Robinia pseudoacacia and fully use the variation resource initiated in the sexual reproduction of TRP in the further improvement of TRP, the classification and vitalities of seed embryos from tetraploid Robinia pseudoacacia were studied. The main results are as follow. According to the cotyledon number, color and plumpness, the seed embryos of TRP could be divided into 5 types: YVT (yellow, very replete,2 cotyledons), YMT( yellow, more replete,3 cotyledons ), YRF ( yellow, replete,4 cotyledons ), GNT ( green, no-replete, 2 cotyledons ) and WNT ( white, no-replete, 2 cotyledons ).

为了阐明刺槐同源四倍体种子胚变异状况及充分利用刺槐同源四倍体有性过程创造的变异资源对四倍体刺槐进行遗传改良，研究了刺槐同源四倍体种子胚类型及其生活力特征，主要结论如下：刺槐同源四倍体种子胚按照子叶数量、颜色及饱满程度，可以划分出5个类型：黄二、黄三、黄四、绿二及白二，所有类型种子胚混合平均单胚重量接近二倍体的1/2。

In a word, we extracted first cotyledon of buckwheat total RNA, by method of RT-PCR and 3RACE, get the C terminal cDNA sequence of PI from Ukraine buckwheat, and do some bioinformatics analyse on this cDNA sequence of PI from buckwheat, such as gene characteristics, expression mode. All of this will be help for the forward research on functional protein and high performance of procaryon expression or eukaryon expression.

综上所述，我们利用RT-PCR和3′RACE技术首次从吉乌一号甜荞第一对子叶中克隆获得荞麦蛋白酶抑制剂基因并对其基因特性、表达模式进行生物信息学分析，同时构建了该基因序列羧基端原核表达载体，为今后进一步研究荞麦功能性蛋白的分子机制及高效原核、真核表达载体的构建奠定了基础。

Embryoides occurred from exterior of callus and developed through the stages of globular embryoid,heart shaped embryoid,tin fish-shaped embryoid and cotyledon differentiation stage embryoid.

胚状体为外起源发生方式，经球形胚、心形胚、鱼雷形胚、子叶形胚等阶段发育成熟。

Seeds globose or depressed globose; seed coat hard; embryo horseshoe-shaped; hypocotyl long; cotyledon short.

种子球状或扁球形；种皮硬；胚马蹄形；长的下胚轴；子叶短。

Seed with a membranous coat; endosperm absent; cotyledon wide; embryo incurved.

种子具一膜质种皮；无胚乳子叶宽；胚弯曲。

At the same time, the extract antifungal activity of wild, cultivation and tissue cultivated Xanthium sibiricum were comparatively researched in five testing fungus by the growth rate method and cucumber cotyledon method.

以苍耳叶片、叶柄及茎段为外植体，在MS附加不同激素种类和浓度配比的培养基上对苍耳愈伤组织进行诱导培养，并对获得生长迅速、性状好的愈伤组织培养条件及培养基进行了系统研究。

Comprising seed plants that produce an embryo with a single cotyledon and parallel-veined leaves: includes grasses and lilies and palms and orchids; divided into four subclasses or superorders: Alismatidae; Arecidae; Commelinidae; and Liliidae.

由生长单子叶胚胎和平行线状叶脉叶子的种子植物组成；包含草、百合、棕榈、兰花等；分为四个亚纲或总目；泽泻亚纲；槟榔亚纲。

Using cotyledon as explants to induce and differentiate callus, and a lots of resistent callus with green prominence were created, the completely differentiated transgenic alfalfa was not yet obtained.

利用农杆菌介导的叶盘法，选取子叶为外植体，现已获得大量的抗性愈伤组织，并且在愈伤组织上有绿色的突起，尚未得到分化完全的再生植株。

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。