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tetraploid plant
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  四倍体
     The result showed that: there were only one tetraploid plant among three varieties(No.S555)under 34.6 mg/L concentration,The variation frequencies was 1.7 %.
     结果表明:仅有一个西瓜品种(编号S555)在34.6 mg/L的浓度下出现了一株四倍体,变异率为1.7%。
短句来源
     (3) There is obvious difference of callus inducing rate between different cultivars, different ploidy and different single plant in the same cultivar. The rate of "UC-72" is higher than that of "Mary Washington 500", with the rate of diploid plant higher than that of tetraploid plant.
     (3) 石刁柏不同品种、倍性及植株间,愈伤组织诱导率有显著差异,UC—72品种的诱导率高于Mary washington 500,二倍体植株诱导率高于四倍体植株;
短句来源
     The guard cells size of stomata ,number of chloroplasts per stoma and chromosome number of root tip cells of 4 morphological variation plants were observed ,one tetraploid plant(2n=36) and one mosaic plant were identified.
     对 4个形态变异株进行了叶片气孔保卫细胞大小、叶绿粒数测定和根尖细胞染色体观察 ,鉴定出四倍体菊花脑 1株 (2n =36 ) ,嵌合体 1株
短句来源
     The tetraploid plant regeneration frequencies were 3.5%~4.5%. It was showed that the addition of colchicine retarded the callus differentiation,and the retardation got more intensive as the treatment time was prolonged.
     再生植株中3.5%~4.5%为四倍体,秋水仙素在分化培养中有抑制作用,处理96h的则很少分化再生植株。
短句来源
     Tech niques in volved in induction of haploid plant and chromo some dou bling in haploid,regeneration of tetraploid plant in duced in vitro and in vivo,triploid breeding and identification of the different ploidy levels in watermelon and muskmelon are dis cussed.
     对单倍体植株的诱导及双单倍体的产生、植株整体水平和离体水平上诱导四倍体变异、三倍体育种及不同倍性水平的鉴定等研究方法和进展作了详细的评述。
短句来源
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  “tetraploid plant”译为未确定词的双语例句
     The results showed that it was a tetraploid plant,and its chromosome number was 2n=4x=28=4m+16st+8t.
     结果表明:异翅独尾草的染色体数目为2n=28;
短句来源
     Polyploid induction and its characteristics of grape were studied. The results showed that the optimum way to produce tetraploid plant was inducing auxiliary buds on MS supplement with colchi cine 20 mg/L and BA 0. 01 mg/L for 12 days. Effects of induction depended on different varieties.
     通过葡萄的离体培养,对多倍体葡萄诱导及其特征特性进行了研究,结果表明,秋水仙素加入培养基中诱导葡萄多倍体,以20 mg/L秋水仙素加入附加有0.01 mg/L 6-BA的MS培养基中包埋腋芽诱导染色体加倍效果较好。
短句来源
     New Southern hybrid bands of bar and cecropinB gene were produced in the progeny of tetraploid plant line, which completely different to the TO generation and maybe caused by the chromosome breakage and recombination in the course of meiosis that involved in the transgene loci.
     筛选标记基因bar在连续筛选压下,能随着杂交传递稳定表达,非筛选基因cecroP了昭表达行为因转基因供体的不同表现出较大差异。 转基因供体中表达的cecroPjnB基因在杂交植株后代中可能发生沉默,转基因供体中沉默的cecr口户1’nB基因经杂交转移后也可能活化表达。
短句来源
     So the regenerated tetraploid plant and its diploid were different in inheritance.
     说明愈伤组织状态下和完整植株的过氧化物酶代谢调节方式可能不同,并且同源四倍体与原二倍体的生化表现上也有所不同。
短句来源
  相似匹配句对
     Tetraploid I.
     与四倍体I .
短句来源
     Embryological Studies on the Crosses between Diploid and Tetraploid in Plant
     植物二、四倍体杂交的胚胎学研究
短句来源
     The Study on Flowering Habit of Tetraploid Sugarbeet Mother Plant
     四倍体甜菜种株开花规律研究
短句来源
     Plant Ecophysiology
     植物生态生理学
短句来源
     Plant Hair
     培植头发——寻找新的脱发治疗方法
短句来源
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  tetraploid plant
nigra has been proven for the first time by chromosome counts in proembryos after pollination of a tetraploid plant with pollen from a diploid species.
      
A 24 h dip in a 28.8 μM aqueous oryzalin solution applied on apical buds was the most efficient treatment in terms of tetraploid plant production (mean = 4.1 tetraploid plants for 10 treated buds over 4 genotypes).
      
Gamma-irradiation (5-100 Gy) increased tetraploid plant formation frequency of primary (7%) and embryogenic calluses (7.6%) and some aneuploid plants were also found.
      
A pseudo test-cross F1 family of 113 individuals segregating for the mode of reproduction was obtained by crossing a synthetic completely sexual tetraploid plant (Q4188) as female parent with a natural aposporous individual (Q4117) as pollen donor.
      
Recent genome mapping projects in tetraploid plant species require a method for analysing the segregation patterns of molecular marker loci in these species.
      
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In this experiment, the tetraploid plants of Husang No. 197 (2n = 56) was adopted as the maternal, while the mixed pollen of diploid Tongxiangqing(2n = 28) and New Ichinose (2n = 28) was taken as the paternal. Two kinds of triploidy platnts of mulberry(2n =3x = 42) were red after artificial cross. They display typical charac-teraistics of triploid in their number of chromsome and their morpholo-gy.They were named as "Hanglinsang No.1"and"Hanglinsang No.2".

本试验选用四倍体湖桑197号(2n=56)为母本,二倍体的桐乡青(2n=20)和新一之濑(2n=28)二个桑品种的混合花粉为父本,进行人工杂交,育成了三倍体桑(2n=3x=42)二个单株,经体细胞染色体镜检,染色体数为42,形态上观察,花而不实,高度不孕,显示出典型的三倍体桑特征。这二个单株暂定名为杭临桑1号和杭临桑2号。

In this paper, the method of inducing the polyploid of Antirrhinum majus L.by the water solution of colchicine was discribed, the seedling of the tetraploid ( 2 n = 32 ) and the diploid ( 2 n = 16 ) was observed and compared in morphology, cytology, and the length of stoma. The results showed that the mutation frequency was better at the solution concentration of 0.3-0.5% and treatment for 24 hours the mutation frequency was 10-11.4%. Most of chromosomes of mutated plants was mixoploidy under microscopy. However,...

In this paper, the method of inducing the polyploid of Antirrhinum majus L.by the water solution of colchicine was discribed, the seedling of the tetraploid ( 2 n = 32 ) and the diploid ( 2 n = 16 ) was observed and compared in morphology, cytology, and the length of stoma. The results showed that the mutation frequency was better at the solution concentration of 0.3-0.5% and treatment for 24 hours the mutation frequency was 10-11.4%. Most of chromosomes of mutated plants was mixoploidy under microscopy. However, the tetraploid plant could be obtained only by the cutting of the mixoploids which showed with polyploid characters. The morphology of the tetraploid of Antirrhinum majus L. was obviously different from the diploid plants in each develop ment stage ( from the cotyledon stage to seedling ) . The thickness of the cotyledon was increased, but the cotyledon was deformed.The sto-mata were enlarged, and the thickness and the size of the petal were increased. The period Of flowering was later from 1 to 3 weeks and the pollens under the self-pollination were sterile. The main reason of sterile under the self-pollination is the abnormality of the meiosis of pollen mother cells in tetraploid and the abortion of all pollens.

本文叙述了用秋水仙素水溶液处理金鱼草种子获得多倍体的方法,以及对获得的四倍体金鱼草(2n=32)与二倍体对照苗(2n=16)进行了形态、细胞学及气孔的观察比较。试验结果表明,浓度为0.3—0.5%的溶液处理24小时诱变效果较好,诱变率可达 10—11.4%。镜检发现诱变植株的染色体多为混倍体,必须将混倍体形态明显似多倍体的部位进行扦插才可获得四倍体。四倍体金鱼草的形态从子叶期到大苗的各个发育阶段均与二倍体有明显差异,表现为叶子增厚、变形,气孔增大,花瓣增厚、增大,花期晚,自花授粉不孕等。四倍体植株的花粉因减数分裂异常,全部败育,是四倍体自花授粉不孕的主要原因。

Tetraploid plants were obtained by treating the germinating seeds of the Asparagus cultivar California University No. 72 (U.C.72) with 0.2% colchicine solution for 48 hours. The percentage of induced variation was 36.8%. The morphological characteristics of the tetraploid were compared with that of the diploid and the chromosome number of the pollen grain at metaphase in diploid was n=10, while. that in tetraploid n=20. The nutritional eomposition of the spears was analysed primarily. The contents...

Tetraploid plants were obtained by treating the germinating seeds of the Asparagus cultivar California University No. 72 (U.C.72) with 0.2% colchicine solution for 48 hours. The percentage of induced variation was 36.8%. The morphological characteristics of the tetraploid were compared with that of the diploid and the chromosome number of the pollen grain at metaphase in diploid was n=10, while. that in tetraploid n=20. The nutritional eomposition of the spears was analysed primarily. The contents of gross fats, gross proteines, gross ashes, vitamine C and 16 different kinds of amino acids in tetraploid were higher than those in diploid. Elegant techniques have been developed for the study of chromosomce in dividing pollen grains in Asparagus (Zou Dao-qian 1985). The pollen grain material is particularly suitable for the determination of chromosome numbers in large samples of genetic material.

用0.2%浓度的秋水仙素溶液处理石刁柏萌芽种子48h,获得了较好的诱变结果。最后得到了四倍体。其诱变率为36.8%。对四倍体石刁柏进行了形态观察和染色体数的鉴定,其染色体数是n=20,2n=40,井初步分析了四倍体嫩茎的粗脂肪,粗蛋白,粗灰分,16种氨基酸及维生素C等营养成分,其含量均比二倍体高。

 
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