缺叶的
- 与 缺叶的 相关的网络例句 [注:此内容来源于网络,仅供参考]
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Effect of Water Deficit on Vascular Bundle System of Rachis in Wheat;2. Relationship between Vascular Bundle System of Rachis and Rachilla and Ear Productivity in Wheat;3. In this studay, pot experiments were carried out to learn the contribution of different organs to grain weight through the treatments of defoliate, darken ear and darken stem and the microstructure of rachis in different genotype wheat under water stress.
本研究选用不同小麦品种,采用盆栽试验,通过水分胁迫处理以及剪叶、包穗、包茎处理,研究了水分亏缺下不同器官光合产物对籽粒产量的贡献以及穗轴显微结构的变化,测定了水分亏缺下小麦不同生育期叶片保护酶活性、蔗糖磷酸合成酶的活性以及光合特性等生理指标。
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Ectrodactyly, ectodermal dysplasia and clefting syndrome is characterized by split hand-split foot malformation, congenital ectodermal dysplasia and cleft lip with or without cleft palate.
目前,以先天性缺指、并指或手足裂和外胚叶发育不全伴或不伴腭裂的唇裂为主要临床表现的先天性缺指-外胚叶发育不全-唇/腭裂综合征的病因仍然不明,给疾病的防治带来了较大的困难。
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Ground upside is a cervical bud death, rely on lateral bud to grow only, ministry of young Xie Quan or share die, sometimes flocculus radical ministry or complete Xie Chenggong are brown.
地上部是根颈部的芽死亡,只靠侧芽生长,幼叶全部或部分死亡,有时小叶基部或全叶呈红棕色。⒋柑橘缺钙症叶片主脉及叶缘四周褪绿,以后褪绿处产生枯斑脱落,枝条顶端向下枯死。
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Physiological and biochemical changes of monocotyledonous plant maize (Zea mays L.) were studied and the protective effects of nitric oxide against iron deficiency induced injury were analyzed simutaniously. The plants were grown in monofactor controlled solutions using solution cultural method and the full expanded fourth leaves were used in all of the experiments. The biochemical and the molecular mechanisms of iron induced injury and the protective mechanisms of NO against iron deficiency induced injury were studied.
本实验以溶液培养单因子控制方法研究了单子叶植物玉米在缺铁培养条件下结构、生理、生化的变化以及NO对缺铁植物的保护作用,发现了缺铁胁迫对植物损伤的生理生化及分子机理,以及NO在植物缺铁胁迫下对植物的保护机制,对于植物的缺铁研究和NO在植物中的保护机制研究都有极其的理论和实践价值。
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Grass of willow leaf horsewhip belongs to herb of perennial of horsewhip female division, formal name: Verbena Bonariensis illustrious name: Purpletop Verbena, alias: Long bine horsewhip is South-American horsewhip grass, careless, originate in South America formerly of Brazil, Argentine and other places, the flower is cyme, small tubular flower is worn be born at spending cauline coping, open amaranth or lilac flower, along with spends a bine to consider individual plant tall to make an appointment with 100-150 centimeter, liu Xie is crossed opposite, the primary part of a historical period after sowing is elliptic brim somewhat notch, beautiful bine is smoked tall the Xie Zhuai after is the slightness leaf that be like willow shape the brim still has pointed notch, the bine is a square this a little bit very special, entire individual plant has cilium to feel the feeling that pricks thorn a bit, the meeting in ground of be out of office is cross of plant of fringy horsewhip female division with a few congeneric flowers, so often a few inflorescence upright among Yu Jusan and fringy model state plant appears.
柳叶马鞭草属于马鞭草科多年生草本植物,学名:Verbena bonariensis英名:purpletop verbena,别名:南美马鞭草。长茎马鞭草,原产于南美洲,花为聚伞花序,小筒状花着生于花茎顶部,开紫红色或淡紫色花,连同花茎算株高约100-150公分,柳叶为十字对生,播种后的初期叶为椭圆形边缘略有缺刻,花茎抽高后的叶转为细长型如柳叶状边缘仍有尖缺刻,茎为正方形这点十分非凡,全株都有纤毛摸起来有点刺刺的感觉,在野地里会与一些同属花为穗状的马鞭草科植物杂交,所以常有一些花序介于聚伞与穗状的中间型态植株出现。
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The other is caused by plantyellow leaves, characterized by first of all, the lower part of the old leaves chlorotic plants, such as wheatperformancesmall, short narrow leaves, old leaves the lower part of the first yellow.
另一种是植物缺氮引起的叶片发黄,其特征首先是植株下部的老叶褪绿,如小麦缺氮表现为麦苗矮小,叶片短窄,下部老叶首先发黄。
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Basal leaf blade reniform, rarely ovate-cordate, apex rounded, rarely subobtuse or emarginate; cauline leaf about as large as basal ones; petals obovate, eglandular, apex emarginate
肾形,很少卵状心形,先端圆形的基生叶,很少微钝或微缺;关于象基生者一样大的茎生叶;花瓣倒卵形,无腺体,先端微缺 18 P。 chinensis 中国梅花草
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Leaves arising from rhizome, simple, alternate, floating, emersed, or submersed, long petiolate but short petiolate on submersed vernal ones; leaf blade undivided, usually with a basal sinus, often peltate.
单叶着生于根状茎,互生,漂浮,挺水,或沉水,有长叶柄但是在春季的沉水叶上为短叶柄;叶片不分裂,通常基部有凹缺,通常盾形。
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A one-step method for the synthesis of aromatic indolizine derivatives byintramolecular 1,5-dipolar cyclization reaction of 2-(2-arylethenyl)pyridinium N-ylidesin the presence of an oxidant has been studied for the first time. In the presence ofelectron-deficient olefins, however, 2-(2-phenylethenyl)pyridinium N-ylides underwent1,3-dipolar cycloadditions and then aromatized in situ by TPCD to produce indolizinederivatives, indicating 1,3-dipolar cycloaddition proceed more readily than 1 ,5-dipolarcyclization in these conditions. Pyridinium disubstituted N-ylides, readily obtainedfrom corresponding pridinium and β-chlorovinyl ketone, underwent thermalintramolecular 1,5-dipolar cyclization to give indolizine derivatives easily.Indolizinecarbaldehyde derivatives were synthesized starting from 2-pyridinecarbaldehyde in four-steps involving 1,3-dipolar cycloaddition reaction.
本文首次研究了2-(2-芳基乙烯基)吡啶N-叶立德在氧化剂存在下的分子内1,5-偶极环化反应,采用一锅法合成了中氮茚衍生物;研究了这些N-叶立德的1,5-偶极环化和1,3-偶极环加成反应的选择性,发现当有缺电子烯烃存在时,优先进行1,3-偶极环加成反应,而不再发生分子内1,5-偶极环化反应;由β-氯乙烯酮方便地得到了烯丙基N-叶立德,他们在加热时进行分子内1,5-偶极环化反应而得到中氮茚衍生物;由2-吡啶甲醛为起始原料,通过1,3-偶极环加成反应等四步反应,得到了重要的中氮茚甲醛衍生物,这些反应都具有条件温和和操作简便的特点,是合成中氮茚衍生物的新方法。
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Basal leaf blade orbicular or broadly ovate-orbicular, base cordate with a deep sinus, apex obtuse and apiculate; cauline leaf much smaller than basal ones; petals oblanceolate, with 2 green, oblong glands near base, apex acute
基生叶圆形或宽卵形圆形,基部心形具一深的凹缺,先端钝和具细尖;茎生叶很多小于基生者;花瓣倒披针形,具绿色,长圆形腺体近基部,先端锐尖 17 P。 yui 俞氏梅花草
- 推荐网络例句
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The split between the two groups can hardly be papered over.
这两个团体间的分歧难以掩饰。
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This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.
这种做法不仅鼓励了更多的反应,而且减少跟风的可能性。
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The new PS20 solar power tower collected sunlight through mirrors known as "heliostats" to produce steam that is converted into electricity by a turbine in Sanlucar la Mayor, Spain, Wednesday.
聚光:照片上是建在西班牙桑路卡拉马尤城的一座新型PS20塔式太阳能电站。被称为&日光反射装置&的镜子将太阳光反射到主塔,然后用聚集的热量产生蒸汽进而通过涡轮机转化为电力