- 更多网络例句与三倍体的相关的网络例句 [注:此内容来源于网络,仅供参考]
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The effects of colchicine concentration and its treatment period on the derived self-hybridized triploids were also analyzed.
以'土佐文旦'柚成树为材料,探讨了秋水仙素诱导2n配子的方法,研究了秋水仙素浓度和处理时期对获得三倍体的影响。
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Molecular genotyping is validated as a method to confirm a diagnosis of CHM by demonstrating androgenetic diploidy and to resolve p57-positive cases into diandric triploid PHMs, biparental diploid nonmolar specimens, and the rare CHM with aberrant p57 expression.
分子基因型检测显示父系二倍体能确诊CHM,并能将p57阳性病例分类确诊为雄性异型三倍体的PHMs、双亲二倍体的非胎块性病变和罕见p57异常表达的CHM。
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Double fertilization The fusion of one pollen nucleus with the egg to form the zygote and of the other pollen nucleus with a polar nucleus to form the triploid endosperm nucleus.
双受精:指花粉粒中的一个精子与胚珠中的卵细胞结合形成受精卵,另一个精核与极核结合形成三倍体的胚乳核。
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The successful induction of chromosome triploidy in prawn provided probability for the polyploid breeding in these species.
对虾三倍体的诱发成功,为对虾的我多倍体育种提供了可能。
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Using semi-quantitative RT-PCR, the differential expression profiles of eleven selected genes were confirmed in the ovaries of triploid and diploid. These genes fell in gene categories with a wide range of functions. The results indicated that triploidy affects the dynamic gene regulatory network in triploid ovary. This study established a firm basis for future investigation on characterization of crucial molecular events for normal ovarian development in shrimp.To further dissect exact gene functions for gonad development of shrimp, three differentially expressed genes between diploid and triploid ovary, PCNA (proliferating cell nuclear antigen), CAS/CSE1 (cellular apoptosis susceptibility protein/chromosome segregation 1) and SSRF (spermatogonial stem-cell renewal factor) were characterized on certain aspects.
利用抑制性消减杂交技术,建立了对虾二倍体和三倍体卵巢间的2个消减文库;在正向消减文库(以三倍体卵巢作为实验组,二倍体卵巢作为驱动组)中,鉴定到54个基因;在反向消减文库(以二倍体卵巢为实验组,三倍体卵巢为驱动组)中,鉴定到16个基因;选取11个差异表达的基因,利用半定量RT-PCR的方法对其在二倍体和三倍体卵巢间的表达进行了检测,均能很好地与消减结果相吻合;这些差异基因编码多种功能的蛋白,分析表明染色体的三倍化使三倍体卵巢中的基因调控网络受到了影响;为深入揭示维持卵巢正常发育的关键分子调控事件奠定了基础。
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For different FAB subtypes,translocation was most common in M3 patients,detected in 58%;deletion was most common in M1,detected in 18%;and trisomy was most common in M5,detected in 29%.
在不同的FAB亚型中,M3患者发生染色体易位的比例最高,为58%;M1患者中发生染色体丢失的比例最高,为18%;而M5患者中发生三倍体的比例最高,为29%。
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The mechanism of triploid seedlessness, evaluation approaches of triploid grapes and embryo rescue technique are also discussed. Seven newly bred triploid seedless cultivars in the world are briefly described such as Yileyi, King Dela, Honey Seedless, Kai Mi...
简要介绍了国内外育成的7个三倍体无核葡萄新品种尾玲、戴拉王、蜜无核、美嶺、夏黑、无核早红和马格拉契的特征特性,并讨论了三倍体无核葡萄育种存在问题和未来的研究重点如杂交亲本的选择、三倍体杂合胚的发育特点和无核性状的遗传规律等。
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In order to assess the change of triploid populus tomentoza pulp plantation long-term-site productivity, The paper studied on effects of aboveground litterfall, fine root turnover and wet dust precipitation in nutrient cycling of triploid populus tomentoza pulp plantations at different ages,namely 2a、4a、5a、6a.It studied influence of different factors on decomposition of leaf、tree bark and twig of triploid populus tomentoza to select the operations to accelerate the decomposition and nutrient release. Finally, it studied influence of different intercrops on plantation site productivity and the relationship of intercrops and triploid populus tomentoza to select suitable intercrops. The main results as follows:(1)The aboveground litterfall of triploid populus tomentoza increased along with age from 216.03±59.7gm~(-2) at 3a to 482.38±101.3gm~(-2) at 7a, The N returned by litterfall wasl8.38±2.46kg.hm~(-2)a~-121.63±2.25kg.hm~(-2a~-139.51±4.61kg.hm~(-2a~-138.89±4.89kg.hm~(-2a~(-1) at 3a、5a、6a、7a respectively. The P returned by litterfall was 5.80±0.62kg.hm~(-2)a~(-1)、8.16±0.94kg.hm~(-2)a~(-1), 11.31±1.33kg.hm~(-2)a~(-1)、11.76±1.37kg.hm~(-2)a~(-1) at 3a、5a、6a、7a respectively. The nutrient returned by fine root turnover increased along with age, too. The N returned by fine root turnover was 3.85±0.41kghm~(-2)a~(-1)、5.22±0.63kghm~(-2)a~(-1),7.62±0.89kghm~(-2)a~(-1),9.17±1.22kghm~(-2)a~(-1) at 3a、5a、6a、7a respectively. The P returned by fine root turnover was 0.73±0.07kghm~(-2)a~(-1)、1.69±0.09kghm~(-2) a~(-1)、1.92±0.31kghm~(-2)a~(-1)、1.96±0.21kghm~(-2)a~(-1) at 3a、5a、6a、7a respectively. The leaf was the principal pathway to return nutrient to soil among litterfall, fine root turnover and wet dust precipitation. The proportion of returned N by leaf was 74.84%、71.96%、78.58%、75.03% at 3a、5a、6a、7a respectively,The proportion of returned P by leaf was 85.93%、80.31%、83.04%、83.23% at 3a、5a、6a、7a respectively. Therefore, it is important to protect and utilize the leaf in order to maintenance and enhance the long-term-site productivity of triploid populus tomentoza pulp plantation.
本文采取时序研究法,以3a、5a、6a、7a共4个不同年龄的三倍体毛白杨纸浆林为对象,研究了地上凋落物、细根周转、湿沉降在林分N、P营养元素循环中的作用及不同年龄林分N、P营养元素循环的特征,以评价三倍体毛白杨纸浆林长期立地生产力的变化;采取网袋法研究了不同因素对落叶、树皮、树枝分解的影响,以确定加快其分解、促进养分释放的措施:同时研究了不同间作物对林地影响、林木与间作物之间关系,以选择能维持立地生产力的合适的间作物种类等内容,得到以下结论:(1)随着年龄的增加,三倍体毛白杨地上凋落物的数量从3a的216.03±59.7gm~(-2)增加到7a的482.38±101.3gm~(-2),通过凋落物归还的N分别为:3a时为18.38±2.46kg.hm~(-2)a~(-1),5a时为21.63±2.25kg.hm~(-2)a~(-1),6a时为39.51±4.61kg.hm~(-2)a~(-1),7a时为38.89±4.89kg.hm~(-2)a~(-1),归还的P分别为:3a时为5.80±0.62kg.hm~(-2)a~(-1),5a时为8.16±0.94kg.hm~(-2)a~(-1),6a时为11.31±1.33kg.hm~(-2)a~(-1),7a时为11.76±1.37kg.hm~(-2)a~-1随着年龄的增加,通过细根周转归还的养分也在增加,归还的N分别为:3a时3.85±0.41kghm~(-2a~(-1),5a时5.22±0.63kghm~(-2)a~(-1),6a时7.62±0.89kghm~(-2)a~(-1),7a时9.17±1.22kghm~(-2)a~-1归还的P分别为:3a时0.73±0.07kghm~(-2a~(-1),5a时1.69±0.09kghm~(-2)a~(-1),6a时1.92±0.31kghm~(-2)a~(-1),7a时1.96±0.21kghm~(-2)a~-1从地上凋落物、细根周转、湿沉降三种不同途径归还林地养分所占的比例来看,地上凋落物中的落叶是归还养分主要途径,年龄在3a、5a、6a、7a时,通过落叶归还的N所占比例分别为74.84%、71.96%、78.58%和75.03%,归还的P所占比例分别为85.93%、80.31%、83.04%和83.23%。
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The sexual gland of triploidfemale abalones can generate oocytes,though thedevelopment of sexual gland was subjected to greatinhibition.
但是,三倍体雄鲍的生殖腺中有极少数成熟精子,而且比三倍体雌鲍呈现出较好的性腺发育状况;三倍体雌鲍的性腺发育虽然受到了很大抑制,但仍有形成卵母细胞的能力。
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The sterile pollens were very concerned with non-equality of homologouschromosomes at two polars,and the difference of pollen yields among individuals werelikely related with disintegration of Tapetum in Prophase I.
其中败育花粉的产生与同源染色体的不均衡分配关系最为密切,而花粉产量的差异则可能是在减数分裂前期I时即发生绒毡层解体而造成的,其根源仍在于毛白杨染色体的异源性,此外易位、倒位等染色体结构变异和天然三倍体的存在也常常会加剧人们对毛白杨配子败育严重的印象。
- 更多网络解释与三倍体的相关的网络解释 [注:此内容来源于网络,仅供参考]
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hexaploid:六倍体
多倍体又可分为三倍体(triploid)、四倍体(tetraploid)、五倍体(pentaploid)、六倍体(hexaploid)等. 具有两个以上染色体组的细胞或生物统称为多倍体. 含有三个染色体组的称三倍体;含有四个染色体组的称四倍体;即含有几个染色体组就称几倍体.
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Musa:芭蕉属
香蕉在植物分类学上属芭蕉科(MUSACEAE)芭蕉属(MUSA). 目前香蕉栽培品种都是由两个原始野生种的尖叶蕉(AA)和长梗蕉(BB)自交或杂交进化而成的,香牙蕉是由尖叶蕉进化的三倍体,而大蕉和粉蕉则是杂交三倍体. 因此,大多数栽培的蕉类都是三倍体.
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triploid:三倍体
真蕨类中这种诱导成的无孢子生殖的二倍体(diploid)的配子体,也可以与单倍染色体(hapoid)的配子体相互交配,由此产生了三倍体(triploid)的孢子体. 蕨类植物的分类系统,各植物学家的意见颇不一致,过去常将蕨类植物作为1个自然群,
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triploid:三倍性的
triploid 三倍体的 | triploid 三倍性的 | triploidy 三倍性
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triploidy:三倍体
除上述多一条或少一条的染色体异常外,自然流产中次常见的为三倍体(triploidy)和四倍体(tetraploidy). 在人类中,这些多倍体的受精卵均无法存活. 在死胎(stillbirth)和死婴(neonatal death)中,若干调查显示染色体异常率在6~7%之间,
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autotriploid:同源三倍体
autotrim clutch | 自动配平离合器 | autotriploid | 同源三倍体 | autotronic | 自动调坡的
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Citrullus lanatus:西瓜
中文摘要: 西瓜(Citrullus lanatus)是重要的经济作物,也是世界十大水果之一,其总产量在蔬菜品种中居第三位,在人们的日常生活中占有重要地位. 三倍体无籽西瓜更受消费者的青睐,但三倍体西瓜的生产受很多因素的限制,其中最主要限制因素就是四倍体产种量低.
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metallics spiral core wire rope:带金属螺旋式钢丝绳, 金属股芯的钢丝绳
ocean platform 海洋(调查)平台 | metallics spiral core wire rope 带金属螺旋式钢丝绳, 金属股芯的钢丝绳 | triplont 三倍体
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triplocaulous:三级茎轴的
triploblastica /三倍层胚胎体/ | triplocaulous /三级茎轴的/ | triploid /三倍性的/三倍体的/
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triply:三重地; 三倍地 (副)
triploid 三倍性的; 三倍体的 (形) | triply 三重地; 三倍地 (副) | tripod 三脚桌, 三脚架 (名)