The Japanese Journal of Genetics最新文献_第4页

Identification of chromosomes involved in translocations in wild Emmer 野生Emmer易位相关染色体的鉴定

The Japanese Journal of Genetics Pub Date : 1994-01-01 DOI: 10.1266/JJG.69.371

K. Nishikawa, S. Mizuno, Y. Furuta

引用次数: 7

Sectoring patterns of spontaneous and radiation-induced somatic pink mutations in the stamen hairs of a temperature-sensitive mutable clone of Tradescantia 一个温度敏感变异无性系雄蕊自发和辐射诱导体细胞粉红色突变的分割模式

The Japanese Journal of Genetics Pub Date : 1994-01-01 DOI: 10.1266/JJG.69.577

S. Ichikawa

{"title":"Sectoring patterns of spontaneous and radiation-induced somatic pink mutations in the stamen hairs of a temperature-sensitive mutable clone of Tradescantia","authors":"S. Ichikawa","doi":"10.1266/JJG.69.577","DOIUrl":"https://doi.org/10.1266/JJG.69.577","url":null,"abstract":"The sectoring patterns of somatic pink mutations were analyzed in the stamen hairs of Tradescantia clone KU 20, a temperature-sensitive mutable clone. This clone is a blue/pink heterozygote, and its spontaneous pink mutation frequency increases up to about 40-fold at lower temperature. In order to elucidate the mutable nature of this clone, the sectoring patterns were analyzed on 1,123 spontaneous pink mutant events and on 2,725 pink mutant events induced by 0.606 and 1.28 Gy of gamma rays. The average number of pink cells per terminal pink mutant event (a row of pink cells including the terminal cell of a hair) occurred spontaneously was 7.40, whereas the number for the terminal pink mutant event induced by gamma rays varied from 3.33 to 9.88 depending on the post-irradiation days, i.e. , increased gradually as the number of days proceeded, then was stabilized at the level of spontaneous mutations after about three weeks. The average number of pink cells per interstitial pink mutant event (a single pink cell or two or more contiguous pink cells between blue cells) was 1.97 for spontaneous mutations, while the number for induced mutations varied also depending on the post-irradiation days. The ratio of the number of interstitial pink mutant events against that of terminal pink mutant events was 1.35 for spontaneous mutations, but the ratio for induced mutations varied also with post-irradiation period reaching 2.89 at the peak, indicating that more interstitial pink mutant events are induced by gamma rays than terminal pink mutant events, as compared with spontaneous mutations. The frequency of multiple pink mutant sectors in a hair was more than four times higher than that expected from independent occurrences in case of spontaneous mutations, while the frequency was close to the expectation in induced mutations, suggesting that somatic recombination is involved as one of the major causes of spontaneous mutations in this mutable clone.","PeriodicalId":22578,"journal":{"name":"The Japanese Journal of Genetics","volume":"55 1","pages":"577-591"},"PeriodicalIF":0.0,"publicationDate":"1994-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90060010","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 10

Physical mapping of chloroplast DNAs of Agropyron glaucum, Ag. trichophorum and Haynaldia villosa using alloplasmic common wheat with cytoplasms of respective species Agropyron glaucum, Ag叶绿体dna的物理定位。毛缕菌和海纳尔菌利用同种异质普通小麦与各自品种的细胞质

The Japanese Journal of Genetics Pub Date : 1994-01-01 DOI: 10.1266/JJG.69.645

C. Nakamura, K. Ohtani, N. Mori, I. Panayotov, C. Kaneda

引用次数: 0

Varietal variations in biochemical changes during growth and redifferentiation of rice callus cultures 水稻愈伤组织生长和再分化过程中生化变化的品种差异

The Japanese Journal of Genetics Pub Date : 1994-01-01 DOI: 10.1266/JJG.69.385

T. Abe, Y. Oka, T. Sasahara

{"title":"Varietal variations in biochemical changes during growth and redifferentiation of rice callus cultures","authors":"T. Abe, Y. Oka, T. Sasahara","doi":"10.1266/JJG.69.385","DOIUrl":"https://doi.org/10.1266/JJG.69.385","url":null,"abstract":"Calli initiated from 7 rice varieties belonging to 3 subspecies, indica, japonica, and javanica were cultured for 2 and 14 months on the callus maintenance medium, transferred to the plant regeneration medium, and various organ redifferentiation/plant regeneration abilities were examined. Considerable variations especially in the shoot regeneration were observed among the varieties; four varieties [Tadukan (indica), Nipponbare and Sasanishiki (japonica) and Allorio (javanica)] retained the same redifferentiation abilities, while the remaining 3 varieties [Fujisaka 5 (japonica) and Te-tep and Choukoutou (indica)] showed only very much lowered abilities after 14 months. During the redifferentiation/regeneration period, samples were taken at 4-day intervals up to 36 days and peroxidase and acid phosphatase activities were measured. Activities of these enzymes increased after transfer to the regeneration medium. The patterns of the increase, although the same among varieties within the same subspecies, differed markedly between subspecies. Significant correlations between the redifferentiation/regeneration abilities and the activities of the two enzymes were observed.","PeriodicalId":22578,"journal":{"name":"The Japanese Journal of Genetics","volume":"21 1","pages":"385-396"},"PeriodicalIF":0.0,"publicationDate":"1994-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89768782","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 8

Structural changes of rye chromosome 1R induced by a gametocidal chromosome 杀配子体染色体诱导黑麦染色体1R的结构变化

The Japanese Journal of Genetics Pub Date : 1994-01-01 DOI: 10.1266/JJG.69.13

T. Endo, Maki Yamamoto, Y. Mukai

引用次数: 42

Disomic behavior of polyploid tuber-bearing Solanum species 多倍体龙葵种的二体行为

The Japanese Journal of Genetics Pub Date : 1994-01-01 DOI: 10.1266/JJG.69.637

Kazuo N. Watanabe, M. Orrillo

引用次数: 7

GENETIC STUDIES ON HYBRID STERILITY IN BARLEY 大麦杂交不育性的遗传研究

The Japanese Journal of Genetics Pub Date : 1994-01-01 DOI: 10.1266/JJG.69.719

Y. Fukushima, T. Konishi