核型

Henan Xinxiang 453007 Abstract The karyotype and the number of Humulus scandens

采用传统的核型分析技术，分析了葎草茎尖有丝分裂中期染色体的核型。

The secondary nuclei can fertilize normally and form nuclear type endosperm while some constitute cellular endosperm, All of them degenerate 12 days after pollination,with the result of the ovules being aborted earlier while the arillus still occur and develop into seedless fruit finally.

次生核虽正常受精，并产生核型胚乳，有的还能发育到细胞型胚，到 12d左右也完全退化。结果导致胚珠极早败育，但假种皮仍能发生发育，最终形成无核果实

Based on the method of karyotype resemblance-near coefficients, a software for cluster analysis is designed.

根据核型似近系数的聚类分析方法，利用Visual Basic编制了核型似近系数的聚类分析软件。

ABSTRACT Heliothis armigera nuclear polyhedrosis virus , due to its special pestiferous effect on Heliothis armigera and being innocent to human, livestock and environment, has been a commercial bioinsecticide widely in the world for years.

棉铃虫核型多角体病毒是我国最早注册的杆状病毒杀虫剂，到1999年，约有100，000公顷棉田用棉铃虫核型多角体病毒的生物制剂防治害虫。

The phenomenon of polyploidy and aneuploidy exists in the Genus, in which there are polyploid complex.

对19个分类群作了核型观察，其中16个分类群作了组型分析，结果表明各分类群间核型差异显著，该属普遍存在着多倍性和非整倍性现象，并有多倍体复合体类群存在。

The chromosomes are composed of metacentric and submetacentric chromosomes, and their karyotypes are rather symmetrical although with evident difference.

结果表明：所有供试材料的染色体数目均为2n=24，核型类型均为&2A&型；染色体主要由中部着丝点和近中部着丝点染色体组成，属较对称核型。

The chromosome number is 2n=96, belonging to hexaploid species (2n=6x=96), and the morphological difference is not obvious among the 96 chromosomes. All the chromosomes are metacentric and submetacentric. Relative length ratio of the longest to the shortest chromosomes is 2.10. There is no satellite chromosome in all the 96 chromosomes. The karyotype formula is 2n=96=60m+36sm, the karyotype type is 2B, a higher karyotype evolution.

结果表明，该入侵种的染色体数为2 n=96，属六倍体物种，各染色体间形态差异不明显，均为中着丝粒或近中着丝粒染色体，最长与最短染色体相对长度比为2.10，全套染色体未见随体，核型公式为2 n=96=60 m+36 sm，核型类型为进化程度较高的2B型。

Karyotypic findings showed that all cultivars were mixoploid with chromosome number ranging from 49 to 57, and 54 was the most frequent number observed.

结果表明：（1）17个栽培小菊均为混倍体，染色体数在49～57之间变异，以54条为主；（2）染色体呈现多态性：多数品种由中部、近中部和近端部着丝粒染色体组成；最长与最短染色体的比值为1.62～2.39；臂比＞2的染色体所占的比率为11.11%～29.62%；核型不对称系数为59.74%～63.37%；3个地被菊品种和'奥运橙光'、'金陵白凤'（2n=53）核型类型为&2B&，其它品种为&2A&型。

To understand the listed contents:the studies about component of nuclear pore complex; the main functions of gp210;the different configuration models of sequence specific DNA-binding proteins; karyotype and chromosome bandings; configuration of chromatin and dene transcription; nuclear bodies is many subnuclear domains which have different conformation between chromatin.

了解核孔复合体成分的研究；gp210主要的功能；序列特异性DNA结合蛋白的不同结构模式；核型与染色体显带；染色质结构与基因转录；染色质之间的空间发现的许多形态上不同的亚核结构域——核体。

Of the chromosomes with arm ratio over 2, and the ratio of the longest chromosome to the shortest one is 2.24:1, thus it belongs to 2B type, and the karyotype formula is 2n =2x =18 =8m (2SAT)+10m.

臂比大于2的染色体占22.2％，最长染色体与最短染色体的比值为2.24，核型类型为2B型，核型公式为2n=2x=18=8sm(2SAT)+10m。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐