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tubular corolla
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  “tubular corolla”译为未确定词的双语例句
     5. The results of tissue culture from tubular corolla of multi-head small chrysanthemum shown that MS medium is the proper medium for micropropagation of small chrysanthemum.
     5.管状花组织培养研究表明,MS培养基适合小菊的组培快繁。
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  相似匹配句对
     SUNNY & COROLLA
     阳光与花冠
短句来源
     Researches on Tubular Surface
     管状曲面的研究
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     On Tubular Positive PIates
     管式正极板管窥
短句来源
     ⑤ corolla primordium phase;
     5花冠原基期 ;
短句来源
     5. The results of tissue culture from tubular corolla of multi-head small chrysanthemum shown that MS medium is the proper medium for micropropagation of small chrysanthemum.
     5.管状花组织培养研究表明,MS培养基适合小菊的组培快繁。
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  tubular corolla
The tubular corolla forces the birds (Sappho sparganura, Colibri coruscans, Patagona gigas, Oreotrochilus adela) into a specific position thereby causing pollen transfer from the exserted pollen-sacs to the bird's feathers and bills.
      
The two genera are distinguished by long tubular corolla-tubes with included anthers (Leptactina) vs.
      


The paper would presnt the Phylogeny and Floristics of Compositae(Asteraceae) in the world. According to the reseach from Fossils and Paleopollen grains, thecentre of the original speciation and the earliest divergence of Compositaecould be at the areas around the Ancient Mediterranean and Montana ofUSA in Eocene or earlier of it in Tertiary era. The Pro-Asterales,especiallyPro-Heliantheae was perhaps, firstly, derived from Pro-Rosales, Pro-Spir-aeoideae, and from Pro-Asterales the primitive species from Trib....

The paper would presnt the Phylogeny and Floristics of Compositae(Asteraceae) in the world. According to the reseach from Fossils and Paleopollen grains, thecentre of the original speciation and the earliest divergence of Compositaecould be at the areas around the Ancient Mediterranean and Montana ofUSA in Eocene or earlier of it in Tertiary era. The Pro-Asterales,especiallyPro-Heliantheae was perhaps, firstly, derived from Pro-Rosales, Pro-Spir-aeoideae, and from Pro-Asterales the primitive species from Trib. Heli-antheae, Trib. Mutisieae and Trib. Cichorieae, were diverged separatelyfrom the ancestors of Pro-Heliantheae, Pro-Mutisieae and Pro-Cichorieae.As the result of the climate became drought and cold,and the strong stim-ulation from insect-pollination in earlier Tertiary era, the tubular corolla,which sepals were adnated regularly or irregularly as bilabiate at the base,as in Pro-Heliantheae and in Pro-Mutisieae, or sepals adnated laterally onone-side, as in the ligulate corolla in Pro-Cichorieaea, syngenesious stamenfrom united free anthers and capitula, which were aggregated the florets onthalamous, were formed. Pro-Vernonieae Pro-Eupatorieae, Pro-Inuleae andSenecioneae, maybe derived earlierly or laterly from the ancestor ofPro-Heliantheae at tropics of C. & S. America, when the ancestorshad migrated and extended the areas into there from the speciation cen-tre. Pro-Astereae and Pro-Anthemideae, perhaps, derived from Pro-Inuleaethere, where the climate became drought or cold in Eurasia, when theancestors had migrated there; Pro-Cynareae and Pro-Arctotideae derivedfrom Pro-Mutisieae, and Pro-Calenduleae from Pro-Senecioneae in droughtand hot areas in Africa and S.-W. Asia, when ancestors of them migratedthere. Trib. Cichorieae solitarily developed from Pro-Cichorieae. The pres-ent species and genera of tribes in the world were separately divergedfrom above pro-tribes. The corolla of florets in capitula from ancestors in the family in ear-lier Tertiary age developed, perhaps, from homogamous capitula with wholebisexual florets and adnated regularly or irregularly tubular at base orbilabiate corolla, into heterogamous, i. e. the marginal florets had beenreduced into pistillate then to asexual with ligulate corolla and it usuallywith teeth 3→2 and 0 at apex of it. Those species are usually found at theareas of insect-pollination. However, in the drought area of wind-pollinationthe marginals were reduced into pistillates with narrow tubular corolla and 4→3→2→0-teeth at the apex. The inner bisexual florets have also the red-uction of pistillate absorption, but absorbed ovaries from present to abs-ent. Then, the unisexual and monoeceous or dioeceous capitula and reducedcorolla in it latererly occured. Those are the evolution in subfam. Tubulif-lorae. With the exception of the capitula, in subfam. Liguliflorae, thosehave whole bisexual ligulate florets, which are accompanied with milkysap in plants, were solitarily developed. Both ligulate corollae with pistill-ate or asexual florets in heterogamous. capitula and with whole bisexualflorets, so-called "concordance", were derived solitarily from differentancestors, but in the same or similar environment. The present pollen grains have more or less shown the differentiationsand relationships among the tribes, for example, in Heliantheae, Vernonie-ae, Eupatorieae, Inuleae, Senecioneae, Astereae and Anthemideae, those arewith 3-zonocolporate, the extine cuneate and the surface spinate-spinulateand with an excrescence system that composed of the column and basalcushion. But in Heliantheae the columellar union with exposed foot layerunlike in others without the layer. In Mutisieae and Cynareae those are byunique extine strata with megacolumellar and microcolumella layers, butin the former it is by a little ellipsoid apertural lacuna and in the latterit is by the ellipsoid and furrowed apertural lacuna. Contrarily, it havecommon lophate extine surface and homogeneous ellipsoid apertural lacunain Cichorieae. It seems to be commended in cp-DNA and Cladistics, especially in c

本文论述了菊科系统分类与区系地理特点。作者将菊科区分为二亚科、5超族、12族,同时将菊科世界区系分4大区、27亚区加以讨论。

Wedelia trilobata is a species of Asteraceae and primarily native to tropical Central and South America;it had been frequently introduced for gardening.Nowadays it has widely been distributed in the region of South China and other seaside.The flowers of W.trilobata are capitulum's and the florets include two types,which are tubular corolla and false tongue flower.The fleshy spinouts objected structure in the tubular corolla affect the natural pollination.The pollination medium was normal and the...

Wedelia trilobata is a species of Asteraceae and primarily native to tropical Central and South America;it had been frequently introduced for gardening.Nowadays it has widely been distributed in the region of South China and other seaside.The flowers of W.trilobata are capitulum's and the florets include two types,which are tubular corolla and false tongue flower.The fleshy spinouts objected structure in the tubular corolla affect the natural pollination.The pollination medium was normal and the main pollinators were Polistes antennaks and Pseudojijeeria maha.The pollen viability and stigma receptivity are weak.The seeding rate and seed germination rate are low.W.trilobata mainly relied on vegetative propagation to increase the community and its climbing stems to reach new space,which rooted and germinated new plants from the node.From the experiment by propagation of cutting and layering,it shows that W.trilobata has strong vegetative propagation and its stems show a high plasticity,and only a single stem with several nodes has the potential ability to increase the community.The above information showed that the potential invasive ability of W.trilobata can't be neglected.

南美蟛蜞菊Wedelia trilobata为菊科蟛蜞菊属植物,原产中、南美洲,由最初的绿化引进开始,现广泛分布于我国华南地区及沿海部分地区。其花为头状花序,有筒状花和假舌状花两种小花,其中筒状花的花瓣中附器结构(肉质刺状物)可能在一定程度影响了正常授粉;传粉媒介不存在障碍,主要媒介为角马蜂Polistesantennaks、酢浆灰蝶Pseudojijeeria maha。花粉活力和柱头可授性差,结实率很低,种子在正常条件下萌发率低。南美蟛蜞菊主要以无性繁殖为主,依靠匍匐茎不断占领新的空间,节节生根并在节上产生新的植株。南美蟛蜞菊的无性繁殖能力极强,其茎段的可塑性很大,扦插、压条试验显示,只要一个带有节的茎段就有成功发展扩大种群潜力,由此可见其潜在的入侵能力不可忽视。

 
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