有子叶的

基本解释 (translations)

cotyledonous

与有子叶的相关的网络例句 [注：此内容来源于网络，仅供参考]

Seeds and developing seedlings of Aconitum kusnezoffii were anatomized to examine vascular development in the root hypocotyl transition region.

关于根茎初生维管系统之间的连接以及与子叶的关系，在文献中已有广泛的论述，有过各种不同的解释。

0Mg/L 6-benzylaminopurine was the optimal concentration of shoots quantity inducing which frequency of inducing shoots and number of shoots per explant were 100% and 11.1 respectively. 0.5mg/L 6-benzylaminopurine was the optimal concentration of shoots length inducing which average length of shoots was 12.0mm. Explant size had significantly effects on direct shoots quantity and length induction. When complete cotyledon used as explant, frequency of inducing shoots, number of shoots per explant and average length of shoots could approach to 100%, 6.7 and 17.1mm respectively. 2.0mg/L silver nitrate could significantly increase shoot quantity induction, both frequency of inducing shoots and number of shoots per explant could be as high as 97.2% and 4.2 respectively. But silver nitrate also could restrain shoots elongation.

结果表明：不同黄瓜品种直接不定芽数量诱导存在显著差异，但长度诱导无显著差异；6-苄氨基嘌呤对直接不定芽数量和长度的诱导作用显著，其中4.0mg/L为数量诱导适宜浓度，其出芽率和每外植体出芽数达到最高，分别为100.0%和11.1，0.5mg/L为长度诱导适宜浓度，其平均芽长12.0mm；外植体的大小对直接不定芽数量和长度均具显著影响，随着子叶的增大诱导直接不定芽的数量和长度增加，其中单片完整子叶为最适宜大小，其出芽率、每外植体出芽数和平均芽长分别达到100%、6.7和17.1mm；硝酸银也对直接不定芽数量诱导影响显著，其中2.0mg/L为适宜浓度，出芽率和每外植体出芽数分别达到97.2%和4.2，但对芽长有抑制作用。

Genus of flowering plants having a single cotyledon in the seed.

种子中有一片子叶的开花植物属。

Only dicotyledonous flowering woody plants and most gymnosperms have true twigs; monocotyledons and tree ferns do not.

只有双子叶的木本开花植物和大部分的裸子植物才有真正的小枝，而单子叶植物和树蕨类植物则没有。

Other leaf samples were collected from monocotylous and dicotyledonous plants, respectively to test this procedure. A series of PCR reactions were tested, which proved this method was widely acceptable.

以有代表性的单子叶和双子叶植物叶片为材料，经过多种内源基因PCR反应的反复验证，证实了这种方法的广泛适用性。

B Of the six basic media MS, MS1/2 (half-strength of MS salts and vitamins), WPM, DKW, B5 and SH, MS1/2 was the most proper one to induce somatic embryos. Somatic embryos generally regenerated directly from excised zygotic cotyledons. PGRs combination affected somatic embryogenesis significantly. Medium with NAA 1mg/L, TDZ 0.05mg/L, IBA 2—10mg/L combined with BA 10mg/L, or IBA 10mg/L integrated with BA 0-2mg/L gave the highest induction rate. Excised zygotic hypocotyls had the strongest potential to produce callus. Callus induction was also affected significantly by media and PGRs. The proper callus induction condition was MS1/2 medium containing NAA 1mg/L, IBA 10mg/L, BA 2-5mg/L and TDZ 0.05mg/L. Harvest period affect somatic embryogenesis significantly. Zygotic embryo explants collected from the end of July to the middle of August had strong potential to generate somatic embryos, when endosperm finished solidification, different parts of the embryos were completely formed, the size of embryos occupied about 2/3 of the embryo sac. Provided with optimized conditions, direct somatic embryogenesis rate can attain to 33. 68%, and callus induction rate of hypocotyls was up to 90.7%. Cytological observation on megasporogenesis and zygotic embryogenesis of Manchurian ash showed that the ovary was twicarpellum, twilocular with two ovules each loculus. The ovule was tenuinucellar and anatropous, with one megasporcocyte. The development of embryo sac is of the Polygoum type.

体细胞胚胎发生研究的结果表明：(1)成熟过程中的合子胚是诱导水曲柳体细胞胚胎发生的最佳外植体材料；(2)在所试验到的MS、MS1/2（将MS的所有成分均减半）、WPM、DKW、B〓、SH等六种基本培养基中，MS1/2是最适合诱导水曲柳体细胞胚胎发生的基本培养基；(3)水曲柳的体细胞胚胎发生以直接发生为主，体细胞胚主要来自于从合子胚分离的完整子叶；(4)培养基中的激素组合对水曲柳的体细胞胚胎发生有显著影响，诱导直接体细胞胚发生较好的激素组合有NAA 1mg/L+IBA 2，5，10mg/L+BA 10mg/L+TDZ 0.05mg/L和NAA 1mg/L+IBA 10mg/L+BA 0，2mg/L+TDZ 0.05mg/L；(5)合子胚分离的下胚轴具有最强的愈伤组织诱导潜力，少数愈伤组织可以分化出体细胞胚；(6)愈伤组织的诱导也受培养基和激素配比的显著影响，最适宜诱导的培养条件为MS1/2+NAA 1mg/L+IBA 10mg/L+BA 2，5mg/L+TDZ0.05mg/L；(7)采种时间对体细胞胚胎发生有显著影响。7月末到8月中旬的合子胚具有较强的体细胞胚发生潜力，此时种子尚未成熟，胚乳已呈固态，种胚的各个部分已分化完全，种胚体积占胚腔的大约2/3；(8)在各自综合的最适条件下，完整子叶的体细胞胚诱导率可达33.68%，下胚轴的愈伤组织诱导率可达90.7%。

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。

Using six monocotyledonous and dicotyldonous weeds and the plant shoots and soils as materials, all the compounds were tested indoors on the herbicidal activities. The results showed that one or two compounds have a definite herbicidal activity.

2所有化合物在室内分别对单子叶和双子叶的六种杂草，采用茎叶和土壤两种处理方法，进行了除草活性试验，结果有1—2个新化合物显示一定的除草活性。

Of alfalfa grass against as many as 65 kinds of products, including dicotyledonous weeds against the most serious, there are: Ma theophrasti, Xanthium, green salsa, salsa fin, Cephalanoplos vegetables, Salsola collina, flat hair, trionum wild, East City, quinoa, small Chenopodium, Portulaca oleracea, Amaranthus retroflexus, Capsella bursa-pastoris, iron amaranth, playing a bowl of flowers, vegetables brachyotus Chicory; monocotyledons mainly Setaria grass, barnyard grass, Chloris virgata, reed, Dichotomanthes grass, Digitaria Descurainia sophia, and so on.

对苜蓿有危害的杂草多达65个种，其中以双子叶杂草危害最为严重，主要有：苘麻、苍耳、灰绿碱蓬、翅碱蓬、刺儿菜、猪毛菜、扁蓄、野西瓜苗、东亚市藜、小藜、马齿苋、反枝苋、荠菜、铁苋菜、打碗花、苣荬菜；单子叶杂草主要有狗尾草、稗草、虎尾草、芦苇、牛筋草、播娘蒿和马唐等。

Trunk cylindric, 1-7 m; bark white-gray, gray, or brown, scaly or raised; pollen cones (25-)30-45 × 8-15 cm, microsporophylls 3.5-6 cm; megasporophylls 13-20 cm.

圆筒状的树干，1-7米；树皮白色灰色，灰色，或棕色，有鳞的或提高；雄球花( 25-)30-45 * 8-15 厘米，小孢子叶-6厘米；大孢子叶13-20 厘米 13

与有子叶的相关的网络解释 [注：此内容来源于网络，仅供参考]

cotyledonous：有子叶的

cotyledon 子叶 | cotyledonous 有子叶的 | cotyloid 杯状的

cotyledonous：有子叶的 (形)

cotyledon 子叶 (名) | cotyledonous 有子叶的 (形) | cotyloid 杯状的 (形)

epicotyl：上胚轴

胚轴由胚芽(Plumule)、上胚轴(epicotyl)、下胚轴(hypocotyl)、和胚根(radicle)所组成. 下胚轴与胚根的分界点通常不易区别. 子叶附著在下胚轴. 子叶的数目因植物种类而异. 大多数的双子叶植物皆有两片子叶. 裸子植物中除conifer 有较多的子叶之外,

hypocotyl：下胚轴

胚轴由胚芽(Plumule)、上胚轴(epicotyl)、下胚轴(hypocotyl)、和胚根(radicle)所组成. 下胚轴与胚根的分界点通常不易区别. 子叶附著在下胚轴. 子叶的数目因植物种类而异. 大多数的双子叶植物皆有两片子叶. 裸子植物中除conifer 有较多的子叶之外,

sporophyll：孢子叶

特征:孢子体多为二叉分枝,小型叶延生起源又称为拟叶,常螺旋状排列,有时对生或为轮生,有或无叶舌,孢子囊有厚壁,单生于孢子叶(sporophyll) 腋的基部,或聚生于枝端或孢子叶球(strobile),或称为孢子叶穗(sporophyll spike).

cotyledonary sheath：子叶鞘

cotyledonary node | 子叶节 | cotyledonary sheath | 子叶鞘 | cotyledonous | 有子叶的

cotyloid：杯状的

cotyledonous 有子叶的 | cotyloid 杯状的 | couch grass 茅草

cotyloid：杯状的 (形)

cotyledonous 有子叶的 (形) | cotyloid 杯状的 (形) | couch 长椅, 卧榻, 睡椅, 长沙发 (名)

Microsporous：小孢子的

小孢子叶;花中的雄蕊 microsporophyll | 小孢子的 microsporous | 有异常的小口的 microstomous

proembryo：原胚

胚在没有出现分化前的阶段,称原胚(proembryo). 由原胚发展为胚的过程,在双子叶植物和单子叶植物间是有差异的. 1.双子叶植物胚的发育 双子叶植物胚的发育,可以荠菜为例说明,合子经短暂休眠后、不均等地横向油裂为基细胞和顶端细胞.