polyploidy
Two ancient rounds of polyploidy in rice genome.
我的论文竟然可以在NCBI的PUBMED查到。
A polyploid species;a polyploid cell.
一种多倍体物种;多倍体细胞
Polyploidy is an important force of plant evolution.
摘要多倍化是促进植物进化的重要力量。
Polyploidy is observed in many species of both plants and animals.
在植物和动物中都观察到许多物种的多倍性。
In plants, polyploidy must be included in any view of speciation.
在植物中，任何物种形成观念都必须考虑多倍性。
Exceptions are those species in which polyploidy occurs.
高等植物通常都是二倍体。
Hybrid sterility is sometimes overcome by polyploidy.
有时可用多倍性来克服杂种不育性。
Initial Study on Polyploid Induction of Asclepias curassavica L.
马利筋多倍体诱导研究初报。
The main exceptions to this are hybrid and polyploid speciation.
对于这一点，最主要的例外是杂种和多倍体物种。
There are two kinds of hybrid speciation: homoploid and polyploid.
杂合体物种形成有两种：同倍体和多倍体。
A polyploid is a plant with more than two complete sets of chromosomes.
多倍体是具有两套以上染色体的植物。
A Study on the Inducing of Polyploid of in Vitro Cells of Capsicum Annuum L.
辣椒离体细胞多倍体的诱导研究。
Autopolyploidy A type of polyploidy involving the multiplication of chromo-some sets from only one species.
同源多倍性：通常是由同一个体，同一纯种的染色体数目加倍而成的多倍性现象。
Unreduced gametes are common in plants and likely represent the most frequent route to polyploidy .
在植物中未减数配子非常普遍，他们可能代表了多倍体形成的最普遍的方式。
It’s commonly and viably to improve the officinal factors by induction of polyploidy.
诱导多倍体能够提高药用植物药用成分的报道屡见不鲜，这种方法切实可行。
Since the first tetraploid was obtained in 1939, polyploidy breeding has always been the focus of watermelon breeding.
从1939年获得第一个四倍体西瓜以来，多倍体育种就一直是西瓜育种的一个热点。
Polyploidy is a mechanism often attributed to causing some speciation events in sympatry.
多倍性常被当作引起在同一地区并存的物种发生物种形成事件的一种机制。
Indeed, we found that EBNA2 could induce polyploidy by flow cytometric analysis.
我们利用流式细胞仪分析发现，EBNA2的确能引起多套体的产生。
Polyploidy cells may then arise after endoreduplication of these unevenly divided chromosomes.
这些带有不正常染色体的细胞进行再复制后，即会造成多套体。
Allopolyploidy A type of polyploidy involving the combination of chromosomes from two or more different species.
异源多倍体：两种或两个以上的不相同的物种杂交，杂种经染色体加倍形成的多倍体类型。
In contrast, polyploidy species need not have low fertility during intermediate stages.
其次，基因组的副本可以保护这种新形成多倍体的遗传完整性。
Chromosome reductional grouping happened more frequently in polyploid cells.
染色体减数分组较多发生于多倍体细胞中。
Key words: biology in high school, inquiry experiment, low temperature inducement, polyploidy.
关键词：高中生物学，实验探究，低温诱导，多倍体
Purpose: To explore the technique of induction of polyploidy in Isatica indicago by colchicine treatment.
摘要采用直接浸渍和加入培养基法对菘蓝种子进行诱导，探讨秋水仙碱诱导菘蓝多倍体的方法。
It is extraordinarily important to select tetraploid lines for breeding sugar beet polyploid varieties.
摘要四倍体品系选育是甜菜多倍体育种不可缺少的重要环节。
Method: Induction of polyploidy by colchicine treatment is efficacious, and part of the doubled plants were identified as homologmous tetraploids.
结果表明：用秋水仙碱诱导菘蓝多倍体植株是有效的，已有部分植株已加倍成为同源多倍体。
Some 60%of monocotyledons and 40%of dicotyledons are polyploid, as are 90% of ferns, many bryophytes, and some algae.
60%的单子叶植物和40%的双子叶植物、90%的蕨类植物、多数苔藓植物以及某些藻类，都是多倍体。
Sublethal temperature might be suitable for polyploid inducement of cold shocks.
亚致死温度是低温诱导多倍体的合适温度。
The Inducement and Identification of the Polyploid of Chrysanthemum Morifolium Ramat.
杭白菊同源四倍体的诱导和鉴定。
Because many polyploidy species are themselves multiply derived, Stebbins' estimate is probably closer to the true polyploid speciation rate.
由于许多多倍体物种是自身繁殖衍生，斯特宾斯的估计可能是更接近真正的多倍体物种形成率。
Polyploidy had the very vital significance in the plant evolution, about a half of species belong topolyploidy in the plant field .
多倍体在植物进化中有很重要的意义,植物界约有二分之一的物种属于多倍体。
Genetic analysis was conducted on genome DNAs from 15 polyploid sugarbeet varieties by RAPD markers.
摘要利用RAPD分于标记技术对15个甜菜多倍体品种进行了遗传分析。
The taxonomy of this subfamily is particularly challenging because of hybridization, polyploidy, and apomixis, especially for large genera.
因为杂交，多倍性和无融合生殖，特别是做为大的属这个亚科的分类法正面临挑战。
Abstract Mutated polyploid Catharanthus roseus L. cells were obtained by treatment of calli with 0.5% colchicine.
提要 用0.5%秋水仙碱处理长春花愈伤组织，获得了多倍体突变细胞。
Also we thought that polyploid represented the basic number of chromosome, such as triploid indicated for 3X.
建议多倍体用染色体基数来表达，如三倍体用3X表示。
Objective To study on the yield and quality for the newly specie of the Polyploid Saposhnikovia divaricata.
目的探讨防风多倍体新种对于防风产量和质量的影响。
The polyploid is very important in vegetable breeding and has a wide prospect for development and utilization.
摘要多倍体在蔬菜育种中具有重要的地位，开发利用前景广阔。
Polyploidy, a crucial mechanism of plant evolution is identified as the core of the research in the systematic and evolutionary botany.
多倍化是植物进化的重要机制，因而成为系统与进化植物学研究的核心内容。
Rare instances of polyploid mammals are known, but most often result in prenatal death.
已知的多倍体哺乳动物非常罕见，而且往往大多数导致产前死亡。
However, reproduction is often by parthenogenesis since polyploid animals are often sterile.
然而，它们常常是通过孤雌生殖繁殖的，因为多倍体动物往往不育。
The research should also be made on phylogeography, modern biotechnology such as polyploidy breeding, microprotoplast fusion et al.
在百合育种中应加强倍性育种及体细胞融合等现代生物技术的应用研究。
The haploid, diploid and polyploid PS materials have respectively special value in crop breeding.
单倍性、二倍性和多倍性多胚苗在作物育种上具有各自不同的意义。
This reveled that it was reliable to use the stoma characters to identify the polyploid.
这说明利用气孔特征鉴定红掌多倍体是可靠的。
The fish artifically induced polyploidy had important significances in both biological evolution and production application.
本文旨在为对今后进一步开展鱼类人工多倍体育种研究提供参考。
It extended the synthesis to encompass botany including the important effects of hybridization and polyploidy in some kinds of plants.
他将综合论延伸以涵盖植物学，包括在某些种类的植物中杂交和多倍体的重要影响。
In order to improve the yield and quality of Danshen, a research project of polyploidy breeding by tissue culture was done.
为了提高丹参药材的品质和产量,进行了组织培养多倍体育种技术的研究。
Chromosome number also gives an indication of polyploidy, where numbers vary by exact multiples between related species.
当多倍性现象发生时，物种的染色体数目是原来的整数倍。
Tissue culture could be used to speed up the polyploid breeding process, and improve the success rate of induction.
摘要利用组织培养可以加快多倍体的育种进程，提高多倍体的诱导成功率。
The technically effective system in inducement of cereal polyploid will conduce to creating a lot of new genetic resources with polyploid characters.
建立多倍体诱导的高效性实用技术体系，将有助于尽快获得大量的多倍体材料和新的遗传资源或种质资源。
By polyploid nature and high levels of heterozygosity of vast majority pasture plants, it was rather complicated to construct linkage maps of them.
由于大多数牧草的多倍性和高度异质特点，牧草遗传连锁图谱的构建相对复杂。