- 更多网络例句与外珠被相关的网络例句 [注：此内容来源于网络，仅供参考]
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Most angiosperm all has inside, outside two layer bead by.
多数被子植物均有内。外两层珠被。
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Aril A brightly colored fleshy or hairy outgrowth from the funicle at the base of the ovule that may partly or completely cover the seed. The mace-yielding outgrowth around the fruit of the nutmeg is an example, as is the red fleshy cup surrounding a yew seed.
假种皮：由珠柄或胎座等发育而成的肉质的，通常具有鲜艳颜色的一种包被于种皮之外的结构，例如肉豆蔻的果实之外的特殊结构，以及红豆杉种子外的红色的肉质的结构。
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Pollen grains germinated soon after pollination. Pollen tubes grew first into the intercellular space of branched penniform stigma and then through the intercellular space of transmitting tissue into the top of the ovary, further penetrating the ovary wall and primine to the micropyle. Green fluorescence was found in both pollen and pollen tubes.
结果表明：授粉后，花粉随即萌发，花粉管进人羽毛状柱头分支结构的细胞间隙，继续生长于花柱至子房顶部的引导组织的细胞间隙中，而后进入子房，在子房壁与外珠被之间的缝隙中向珠孔方向生长，花粉与花粉管均具有明显的绿色荧光。
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The ovule is orthotropous and crassinucellate, nucellus is surrounded by three envelopes.
胚珠直生，厚珠心，珠心被内、外珠被以及盖被等三层被膜所包围。
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Fibers are the seed hairs of cotton, and they originate from the epidermal cells of the ovular surface. Fiber development is composed of four distinct and overlapping stages.
棉纤维由棉花胚珠外珠被表皮层的单细胞发育而成，属于种子表皮毛，其分化和发育过程由四个相互重叠的时期组成。
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In the plant, bead appearance of ovule be been in becomes an envelope.
在植物，珠被在胚珠外形成一个封套。
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Reduction of ovule number as a tendency of speciation in the genus is substantiated by the occurrence of tri_ovulate cones coupled with comprehensive characters of the genus. The metamorphic patterns as well as the leaf nature of the outer envelope indicate that female cones of Ephedra are compound while the female reproductive units of the ovulate cone have been reduced from secondary reproductive shoots similar to those of cordaites by phylogenetic transformation, fusion and reduction. Each fertile bract together with its axillary female reproductive unit composed the Bract Scale and Seed Scale Complex of Ephedra .
基于返祖性畸形三胚珠球花的出现及其他形态特征，认为麻黄属胚珠数目减少是该属内物种特化的一个趋势；利用雌球花发育的畸形现象及外珠被的形态学本质提出麻黄属的雌球果为复轴性构造，雌性生殖单位是由类似于科达类的次级生殖枝构造经系统发育变态、融合、简化成现存的生胚珠构造式样，每一可育苞片及其腋内雌性生殖单位共同组成了麻黄属的苞鳞_种鳞复合体。
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The effects of GA 3 and IAA on fiber cell elongation were studied by in vitro cotton ovule culture and by comparison of a lintless mutant (Ligon cotton, Li 1) with its wild type (li 1) in upland cotton (Gossypium hirsutum L.).
棉纤维是由棉花胚珠外珠被表皮细胞分化与发育而来的单细胞，通常将纤维发生与发育分为起始、伸长、次生细胞壁合成和脱水成熟 4个阶段。
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Pollen grains germinated soon after pollination. Pollen tubes grew first into the intercellular space of branched penniform stigma and then through the intercellular space of transmitting tissue into the top of the ovary, further penetrating the ovary wall and primine to the micropyle. Green fluorescence was found in both pollen and pollen tubes.
结果表明：授粉后，花粉随即萌发，花粉管进入羽毛状柱头分支结构的细胞间隙，继续生长于花柱至子房顶部的引导组织的细胞间隙中，而后进入子房，在子房壁与外珠被之间的缝隙中向珠孔方向生长，花粉与花粉管均具有明显的绿色荧光。
- 更多网络解释与外珠被相关的网络解释 [注：此内容来源于网络，仅供参考]
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interfascicular cambium：束間維管束形成層 發生於兩維管束之間的形成層
integuments 珠被 胚珠外之保護構造 | interfascicular cambium 束間維管束形成層 發生於兩維管束之間的形成層 | lacunar collenchyma 有隙厚角組織 其厚角細胞初生細胞壁於角落加厚並具細胞間隙
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caruncle：种阜
有些植物的外种皮,在珠孔处由珠被扩展形成海绵状突起物,称种阜(Caruncle),如蓖麻、巴豆. 吃过椰子的人都知道,椰子的果皮分为三层,外层薄而光滑,质地致密,抗水性较好;中层厚而松散,充满空气,质轻而漂浮于水上;内层是坚硬的果核,
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inner integument：内珠被
在一些植物中,可产生内珠被(inner integument)和外珠被(outer integument), 如百合, 其外珠被是在内珠被发生以后以同样的方式在其外方发生的. 在一部分植物中仅有一层珠被(图9-11). 在多种植物中, 由于胚珠在发育过程中各部分的细胞分裂和生长速率不同,
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outer integument：外珠被
在一些植物中,可产生内珠被(inner integument)和外珠被(outer integument), 如百合, 其外珠被是在内珠被发生以后以同样的方式在其外方发生的. 在一部分植物中仅有一层珠被(图9-11). 在多种植物中, 由于胚珠在发育过程中各部分的细胞分裂和生长速率不同,
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primine：外珠被
primigravidaunigravida 初孕妇 | primine 外珠被 | priming 起爆剂
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seed coat：種皮 源自珠被為種子最外層
seed 種子 成熟的胚珠內含胚 | seed coat 種皮 源自珠被為種子最外層 | sepal 萼片 花部的最外輪通常葉狀
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sepal：萼片 花部的最外輪通常葉狀
seed coat 種皮 源自珠被為種子最外層 | sepal 萼片 花部的最外輪通常葉狀 | sepal 花萼 一朵花最外輪的花部器官
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synangium：聚合囊
喙外又有一垣围之,二者之间为贮粉室,其中有时可看见花粉粒,珠心之外有1厚的珠被,珠被是由若干个单位联合而成的,每一个单位代表着1个不育的大孢子叶,所以整个胚珠不是单个的孢子叶,而是聚合囊(synangium),珠心才是有效的大
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primeval forest;virgin forest：原始林;天然林
引发物质 primer | 原始林;天然林 primeval forest;virgin forest | 外珠被 primine