- 更多网络例句与大孢子囊相关的网络例句 [注:此内容来源于网络,仅供参考]
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The central portion of an ovule in which the embryo sac develops ;the megasporangium.
珠心胚珠的中心,胚芽囊在此发育;大孢子囊
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Recurvata occurred in the Posongchong Formation of Zhichang Section, Wenshan District. Detailed research shows that Huia gracilis sp. nov. has K- or H-type branching in the rhizome.
茎轴光滑,二叉分枝,直立的长楔形孢子囊侧生,松散螺旋排列,具长柄,由较小的近轴瓣和较大的远轴瓣组成,两瓣凹凸,开裂缝具明显的边缘加厚带。
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In Situ hybridization showed that OsUBP1 mRNA expressed in the tapetum, pollen grains, macrospore sac and the vascular bundle at the bottom of spikelets.
原位杂交分析表明,在花中OsUBP1 mRNA主要在药壁绒毡层、花粉粒、大孢子囊和颖花底部维管束中表达。
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At the reproductive stage, RA68 was expressed in the inflorescence meristem, the tip of rachis branch, spikelet primordia, macrospore sac and pollen grains.
原位杂交分析结果表明:在幼苗期RA68主要在幼芽胚芽鞘的内外层细胞和幼叶原基的表层细胞中表达;转入生殖生长期后,在花序分生组织、枝梗原基顶端、花器官原基、大孢子囊和花粉粒中表达。
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An immature seed; the megasporangium and surrounding integuments of a seed plant.
胚珠 Ovule 未成熟的种子;种子植物的大孢子囊及其周围的被层。
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Microspore Ye as the feather, small sporophyll sac formed by the polymerization, each polymer capsules formed by four small sporangia, small spores with dual airbags, and airbag Pinaceae pollen is similar to large sporophyll from the central axis and arranged in Brachypodium feather composition, Each Yibing has a shell bucket, each bucket containing shell upright ovules 10-12 months.
小孢子叶枝为羽状,小孢子叶由聚合囊组成,每个聚合囊由4个小孢子囊组成,小孢子具双气囊,与松科植物花粉的气囊相似,大孢子叶由中轴及羽状排列的短柄组成,每一柄上有一个壳斗,每个壳斗内有10—12个直立的胚珠。
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The Filicales is much the largest living group of ferns, and they normally have large spirally arranged leaflike fronds derived from lateral branches of the main axis, some or all of which bear sporangia on their margins or undersurfaces.
薄囊蕨纲是现存蕨类植物中数量最多的一个类群,他们通常具有很大的、螺旋状排列的、从主轴的侧枝上形成的叶(巨型叶 MEGAPHYLIS ),其中一部分或绝大多数都是在叶边缘或背面产生孢子囊群。
- 更多网络解释与大孢子囊相关的网络解释 [注:此内容来源于网络,仅供参考]
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macrosporangium:大孢子囊
macrospheric generation 大球世代 | macrosporangium 大孢子囊 | macrospore 大孢子
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megasporangium:大孢子囊
孢子叶球棒状生于枝顶,横切面方形,孢子囊有两种,大孢子囊(megasporangium)含4个大孢子,大孢子散布,萌发成雌配子体;小孢子囊(microsporangium)内含多数小孢子,小孢子萌发形成雄配子体.
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megaspore:大孢子
因为他们彼此间的亲源关系较为密切,相对拟蕨类的称呼成员彼此就比较疏;就跟关系最亲近的卷柏类一样,水韭类也是异型孢子的植物,只不过有些水韭类的植物他的大孢子(megaspore)跟小孢子(microspore)可能会长在同一个孢子囊(sporangium)里,
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megaspore:大孢子;巨型芽孢
megasporangium 大孢子囊 | megaspore 大孢子;巨型芽孢 | megasse 甘蔗渣;甜菜渣;压榨所得的渣
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microsporangium:小孢子囊
横切面方形,孢子囊有两种,大孢子囊(megasporangium)含 4 个大孢子,大孢子散布,萌发成雌配子体;小孢子囊(microsporangium)内含多数小孢子, 小孢子萌发形成雄配子体.配子体的发育均在孢子壁内发育.雌配子体的发育经过游离核阶段,
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zoosporangium:游动孢子囊
1.无性繁殖(asexual reproduction) 无性繁殖是指营养体不经过核配和减数分裂产生后代个体的繁殖. 它的基本特征是营养繁殖通常直接由菌丝分化产生无性孢子. 常见的无性孢子有三种类型:(1)游动孢子(zoospore):形成于游动孢子囊(zoosporangium)内. 游动孢子囊由菌丝或孢囊梗顶端膨大而成.
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heterosporous:异型孢子的
大孢子囊megasporangium | 异型孢子的heterosporous | 大孢子megaspore
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megasclere:大骨针
megaphanerophyte 大高位芽植物 | megasclere 大骨针 | megasporangium 大孢子囊
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oophoridium:大孢子囊(卷柏类的)
卵菌门 Oomycota; oosphere fungi | 大孢子囊(卷柏类的) oophoridium | (藓类的)雌配子植物体 oophyte; female gametophyte
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sporangiospore:孢囊孢子
(2)孢囊孢子(sporangiospore):形成于孢囊孢子囊(sporangium)内. 孢子囊由孢囊梗的顶端膨大而成. 孢囊孢子有细胞壁,无鞭毛,释放后可随风飞散. 真菌营养生长阶段的结构称为营养体. 绝大多数真菌的营养体都是可分枝的丝状体,