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vascular bundles
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  维管束
     In stem, 12-18 vascular bundles are arranged in 2-3 circles.
     茎中维管束12—18束,排成2—3轮。
短句来源
     The grains per panicle, therefore, were affected by the number of primary branches, large and small vascular bundles in neck-panicle through the secondary branches.
     每穗粒数主要由2次枝梗粒数决定,而2次枝梗粒数主要由2次枝梗数决定,穗颈大、小维管束数和1次枝梗数通过2次枝梗数影响每穗粒数;
短句来源
     Type five included C II -35, CII -36 and CII -41. There were 3 layers of vascular bundles in leaf tissue and 2 in pedicel tissue. The total number is 22.7-23.7 and 39.3-40.3, respectively.
     类型5:CⅡ-35、CⅡ-36、CⅡ-41,叶片和花梗的维管束分别呈3排状和2环状分布,总数分别为22.7-23.7和39.3-40.3。
短句来源
     Type one included CII -5, CII -7, C II-8, CII-10 and CII -12. There were 3 layers of vascular bundles in leaf and pedicel tissue.
     类型1:CⅡ-5、CⅡ-7、CⅡ-8、CⅡ-10、CⅡ-12,叶片和花梗的维管束分别呈3排状和3环状分布。
短句来源
     The regression of the number of triple-spikelets(Y)on that of large vascular bundles in basal internode maybe formularized by Y=a+bx. It's coefficient(b)was 0.3846 irrespectiveof the cultivars.
     三联小穗数(Y)依存于基部伸长节间大维管束数(X)的回归关系可表示为 Y=a+bx,其中回归系数(b=0.3846)不因品种而改变,而回归常数(a)可因亚种和变种(类型)而异:H.
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  血管束
     The vascular bundles were obtained from the branches of arteria saphena inside the tibia of rhesus,the external diameter of which was 0.8-1.0 mm.
     血管束来源于恒河猴胫骨内侧皮下隐动脉分支,其外径约0.8~1.0mm。
短句来源
     The study on histochemical stainings of cartilage cells in prefabricated flap after implantation of vascular bundles
     血管束植入后预构皮瓣中软骨细胞的酶组织化学研究
短句来源
     METHODS Twenty five Japanese big ear rabbits were divided into five groups. Five cm of femoral artery and vein vascular bundles, and 3 cm×2 cm ear cartilage were transplanted into the left lower abdomens of the rabbits. 100 g·L -1 fluorecin sodium staining and ECT photography were performed on the 7th, 10th, 14th, 21st, and 28th day after the transplantation.
     方法 将日本大耳白兔分为 5组 ,每组 5只 ,取股动静脉血管束 6 cm,置入同侧下腹部 ,并植入 3 cm× 2 cm耳软骨 ,分别于7,10 ,14,2 1和 2 8d行 10 0 g· L- 1 荧光素钠活体染色 ,ECT照像及皮瓣成活面积观察 .
短句来源
     (4)Multiple nodulars and patchy dense shadows that were beneath the pleura and were connected with the primary tumor by some fine lines or with the ends of vascular bundles;
     (4)胸膜多发、并分别与原发癌灶间以线影相联的和与血管束末梢相联的结节影和/或斑片影,以及叶间裂不均匀增厚;
短句来源
     ②6-week after implantation of vascular bundles and free PC into random cutaneous flaps capabilities of PC proliferation and differentiation into cartilage as well as vascularization gradually become better at which time prefabricated cartilage-cutaneous flap can be elevated safely.
     ②血管束及游离软骨膜植入随意型皮瓣内6周后,血管化及软骨膜增殖分化出软骨能力均趋于完善,此时可以安全启动预构软骨皮肤瓣。
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  “vascular bundles”译为未确定词的双语例句
     The reporter,GUS gene,was expressed to different extent in different organs,with a frequency of 48% in roots,9.2% in vascular bundles of stem,5.2% in leaves,and 51% in flowers.
     不同组织中GUS基因的表达频率为:根部48%,茎的微管组织9.2%,叶5.2%,花51%;
短句来源
     The latter had a primitive character only at the base of culms. The length of vascular bundles varied from 0 17 to 1 77 mm, the average was 0 68 mm.
     维管束的长度为 0 1 7~ 1 77mm ,平均 0 68mm ;
短句来源
     (5) The surface endosperm cells near the vascular bundles at seed base became specialized endosperm transfer cells;
     (5)在靠近籽粒基部维管束的胚乳表层细胞特化成胚乳转移细胞;
短句来源
     3.the construction of vascular bundles of different materials is simitar.
     3.不同材料的维管结构基本相似。
短句来源
     The wax slicks of the ovaries, endosperms, upper primary branches and lower secondary branches and their micro-photography were done to survey the developments and the number of the endosperms cell and the feature of the vascular bundles.
     并于抽穗当天、抽穗后第3天及乳熟期,取强弱势粒子房或籽粒,以及上部一次枝梗和下部二次枝梗,制成石蜡切片,显微摄影,观察胚乳细胞的发育动态及最终胚乳细胞数以及上部一次枝梗和下部二次枝梗的维管束的数目和特征。
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  vascular bundles
In the shoots, Sr was found in the xylem cell walls in the vascular bundles of coleoptile, mesocotyl, and leaves on the second day of incubation, an evidence for high Sr mobility.
      
Autoradiography of the source leaves showed that, in plants supplied with water or urea, the label was predominantly accumulated in large vascular bundles, and in nitrate type of treatment, it was accumulated outside large bundles.
      
The culm wall consisted of ground parenchyma tissue enclosing a large number of fibro-vascular bundles, which varied in size, structure and abundance in different parts of the culm, both in the axial and radial direction.
      
The number of large vascular bundles in panicle neck was less in Sichuan than in Liaoning, while the number of small vascular bundles in panicle neck and second top stem was greater in Sichuan than in Liaoning.
      
The ratio of large to small vascular bundles in panicle neck decreased and the ratio of large vascular bundles between the second top stem and panicle neck increased in Sichuan.
      
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Hemerocallis thunbergii Baker is a traditional drug, which has been proved to be schistosomicidal in experimental infection but very toxic to the host. In order to explore its toxicity and methods of detoxication, a series of experiments was carried out on albino mice. It was determined that the acute LD_(50) of its root and cortex of root were 82 and 49 mg/20 g body weight respectively. No toxic reactions were observed when either rhizome remnant of scalar vascular bundles or vascular cylinder of...

Hemerocallis thunbergii Baker is a traditional drug, which has been proved to be schistosomicidal in experimental infection but very toxic to the host. In order to explore its toxicity and methods of detoxication, a series of experiments was carried out on albino mice. It was determined that the acute LD_(50) of its root and cortex of root were 82 and 49 mg/20 g body weight respectively. No toxic reactions were observed when either rhizome remnant of scalar vascular bundles or vascular cylinder of root was administered in dosages of 140, 160 and 220 mg/20g respectively. Within the range of 22—35℃, the variation in room temperature bears no relationship to the toxicity of Hemerocallis thunbergii. The accumulative action of Hemerocallis thunbergii was very obvious and tolerance of the infected mice to the drug was even lower than that of non-infected animals. According to traditional practice, the toxicity of the drug would be decreased when placed into rice washing fluid. Experiments had been made by immersing the drug into such fluid at 20℃ or 60—70℃, but failed to achieve the detoxication. On the other hand, Coptis chinensis and Phellodendon amurenese are effective detoxicants, especially when the former was administered simultaneously with Hemerocallis thunbergii.

本文研究了萱草根的毒性,证明药物的毒性主要集中于根部,萱草根的毒性尚稳定,即使在22—35℃的范围内,其对小白鼠的毒性亦无明显的差异,药物在宿主体内有很大的积蓄作用,同时感染血吸虫病的动物对药物的耐受性较未感染的显著为低,试验结果说明,用米泔水泡制法不能减低药物的毒性,但在120℃干烘4小时则可使药物的毒性降低1倍以上。此外,黄连、黄柏与萱草根配伍时可解除药物的部分毒性,并且可以提高萱草根连续多次口服的剂量。

This paper regards the comparative research of the causes of pollen failed fertilization of several Ms types in Rice.Experimental results show that there are existing some indifferent mechanisms to the pollen sterilization of the Ms types: during the period of single nucleic to three nucleic pollen cell,we observed that the cell of xylem and phloem in anther septum abnormally developed,also the cell in the sheath of vascular bundle,smaller and arranged irregularly; the metabolic block developed too,especially...

This paper regards the comparative research of the causes of pollen failed fertilization of several Ms types in Rice.Experimental results show that there are existing some indifferent mechanisms to the pollen sterilization of the Ms types: during the period of single nucleic to three nucleic pollen cell,we observed that the cell of xylem and phloem in anther septum abnormally developed,also the cell in the sheath of vascular bundle,smaller and arranged irregularly; the metabolic block developed too,especially obvious in the anther.Then pollen sterilization is produced by lacking nutrient caused from prior two factors.The main period of developing pollen sterile is at the late stage of single nucleic pollen,as the same stage of producing metabolic block.

本文对水稻几种雄性不育类型的花粉败育原因进行了比较研究。结果表明,不育类型的花粉败育有着一些共同的机理:在花粉单核期至三核期可见到花药隔维管束的木质部及韧皮部细胞发育较差,维管束鞘细胞发育不良,体积较小,排列紊乱;在单核花粉期至三核花粉期均发生物质代谢障碍,特别在花药部位尤为明显;由于维管束发育不良和花药物质代谢障碍,导致了花粉缺乏营养而败育。败育的主要时期是在单核花粉晚期,这与代谢发生明显障碍的时期是一致的。

Cyto-histological investigations were made on the microsporogenesis of male-sterile line of the wild rice pollen abortion type. Although some abnormal phenomena of microsporogenesis were observed in the stages before the formation of uninucleate pollens, in the majority of cases pollen abortion was found to occur in the uninucleate stage when the tapetal cells degenerated abruptly as induced by the rapidly vaeuola-ting and enlarging middle layer cells, and thus the supply of nutrients from the tapetal cells...

Cyto-histological investigations were made on the microsporogenesis of male-sterile line of the wild rice pollen abortion type. Although some abnormal phenomena of microsporogenesis were observed in the stages before the formation of uninucleate pollens, in the majority of cases pollen abortion was found to occur in the uninucleate stage when the tapetal cells degenerated abruptly as induced by the rapidly vaeuola-ting and enlarging middle layer cells, and thus the supply of nutrients from the tapetal cells to the developing pollen grains was curtailed. This was considered to be-a cause of pollen abortion in the male-sterile line of wild rice pollen abortion type.It was also found that, in the male-sterile line of wild rice pollen abortion type, the vascular bundles in the filaments were poorly differentiated. There was no well developed vascular bundle in the filaments with anthers containing completely aborted pollens; short and interrupted vascular bundles were found in the filaments with about 50% aborted pollens in the anthers; and, in anthers with only 20% aborted pollens, the vascular bundle was apparently normal. The degeneration of vascular bundle in the filament was also considered to be another cause of pollen abortion in male-sterile line of wild rice pollen abortion type.

关于植物雄性不育的小孢子发生的组织学和细胞学研究,过去曾有过不少报道。Laser和Lersten曾对自1925年起至1972年4月1日止的文献作了综合性的评论。在该文的表1中列举了曾研究过的植物种类,均未提及水稻。近年来,国内外也有人对水稻雄性不育的小孢子发生过程进行了细胞学的观察。我室自1975年起,除观察水稻雄性不育的小孢子发生过程外,主要对花药的毡绒层及花丝组织进行了解剖观察,以探索其花粉败育的原因。据我们的观察结果,不同类型的水稻雄性不育系,其花粉的败育过程也不完全相同。因此,需要对不同类型的水稻雄性不育系的花粉败育过程分别加以研究。本文主要报道对野生稻花粉败育型雄性不育系进行观察的结果。

 
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