The chromosome karyotypes and the chromosome variation of regenerated plants of perennial ryegrass(Lolium perenne L.
对多年生黑麦草核型及组织培养再生植株细胞染色体变异进行了观察研究。
There are several kinds of variations such as chromosome variation, morphological and agricultural trait variation and resistance variation.
原生质体再生植株发生变异的现象较为普遍 ,已涉及到很多作物 ,变异的类型较多 ,主要有染色体变异、形态和农艺性状变性、抗性变异等 ,产生变异的机理主要有遗传和生理两方面 ,此类变异有其优点和不足 ,但无庸置疑的是原生质体再生植株遗传变异为植物育种提供了大量可供选择和利用的材料。
The frequency of chromosome variation increased with the subcultured time.
在含有不同附加成分的ＭＳ培养基上诱导出的掌叶半夏愈伤组织及再生植株都有一定的染色体变异。
A preliminary study on the genetic variation of chromosome number of embryogenic calli in litchi;
荔枝胚性愈伤组织染色体数目变异研究初报
Some problems related to "variation of chromosome number" in some teaching materials of genetics are presented in this article.
指出了高校有关遗传学教材"染色体数目变异"一节中,部分概念如单倍体、染色体组、非整倍体等存在的概念表述不清、前后矛盾等问题,并提出了相应的修改意见。
In the study of chromosomal behavior in interspecific hybrid of tritical crops, cytomixis was observed at microspore stage.
最近在研究八倍体节燕麦及其与中国春小麦杂交 Ｆ１ 代材料的减数分裂染色体联会情况时，发现减数分裂前期Ⅰ及小孢子时期相邻细胞均出现染色质穿壁现象，并对核穿壁与染色体数目变异的关系进行了探讨。
an organism that has characteristics resulting from chromosomal alteration.
染色体变异的生物体。
Aberrance of the Chromosomal in 20 patients(3.7% in 545 patients).
染色体变异共20例,占3.7%。
Study on Chromosome Variation of Caranaga Intermedia
中间锦鸡儿(caranaga intermedia)染色体变异研究
Research on Tissue Culture and Variation Induction of Chromosome of Artemisia Annua L.;
黄花蒿组织培养及染色体变异诱导的研究
Development and Identification of Chromosome Variations Involving Roegneria Kamoji Chromosome 1Rk～(#1) in Wheat with Scab Resistance;
小麦—鹅观草1Rk～（#1）染色体变异体的选育及其抗赤毒病性鉴定
A deviation in the normal structure or number of chromosomes in an organism.
畸变，变形有机体正常结构或染色体数量的变异
Study on the variation of Welsh onion chromosome pioidy in vitro culture
组织培养中大葱染色体倍性变异研究
Study on the Mutation in Chromosome Heterochromatic Region and its Genetic Effects
染色体异染色质区变异特征及其遗传效应的研究
The relationship between abnormal chromosome of fetal cord blood and abnormal changes of ultrasound
胎儿脐血染色体异常与超声异常改变的相关性
A chromosome composed primarily of heterochromatin.
异染色体主要由异染色质组成的染色体
Structural Changes of Chromosomes 2V, 4V and 6V of Haynaldia Villosa Induced by Chromosome 3C of Aegilops Triuncialis;
离果山羊草3C染色体诱导簇毛麦2V、4V和6V染色体结构变异的研究
Aneuploids and chromosomes structure variation were not found.
未发现有非整倍体细胞和染色体形态结构变异。
No distinct chromosome abnormality is found among bio-engineering cells muted by outer space.
②发现空间诱变后的肿瘤细胞无明显染色体异常。
Chromosome Structural Heterozygosity in Paeonia (Paeoniaceae): Evidence from Paeonia Decomposita and P. Intermedia;
芍药属两物种染色体结构变异杂合性研究
The Studies of Chromosome and Phenotype Analysis between Tobacco and Basilicum;
烟草科间杂种后代染色体及性状变异的研究
Characteristics of DNA Constitution and Epigenetic Changes in B Chromosomes of Rye (Secale Cereale L.);
黑麦B染色体DNA组成特性和表观遗传变异研究
environmental pollution and chromosomal aberration
环境污染与染色体畸变
Conclusion Chromosome abnormalities may be one of the important causes of abortion, stillbirth, monster and malformation.
其中常染色体异常16例，性染色体异常3例，染色体形态异常7例，标记染色体3例。