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Canadian journal of genetics and cytology. Journal canadien de genetique et de cytologie最新文献

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Cytogenetic analysis of translocation heterozygosity in the common bean (Phaseolus vulgaris L.) 菜豆易位杂合性的细胞遗传学分析
Canadian journal of genetics and cytology. Journal canadien de genetique et de cytologie Pub Date : 1986-08-01 DOI: 10.1139/G86-084
M. Ashraf, M. J. Bassett
{"title":"Cytogenetic analysis of translocation heterozygosity in the common bean (Phaseolus vulgaris L.)","authors":"M. Ashraf, M. J. Bassett","doi":"10.1139/G86-084","DOIUrl":"https://doi.org/10.1139/G86-084","url":null,"abstract":"Twelve semisterile lines of Phaseolus vulgaris L. (2n = 22) were reported previously by this laboratory. Here we verify through cytological investigations that 5 of the 12 stocks are indeed chromosome translocations. Cytological analysis of a half diallel set of crosses indicates that these five stocks involve eight different chromosomes in reciprocal translocations. Pollen and ovule abortion rates increase with the increasing number of interchanges in a stock. Cytological behavior and morphological abnormalities with respect to pollen and ovule abortion produced by translocation heterozygosity in the common bean, as observed in this study, are similar to those reported in other crops.Key words: Phaseolus, chromosome translocation, translocation heterozygosity.","PeriodicalId":9589,"journal":{"name":"Canadian journal of genetics and cytology. Journal canadien de genetique et de cytologie","volume":"1 1","pages":"574-580"},"PeriodicalIF":0.0,"publicationDate":"1986-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75551446","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: 12
Evidence for local DNA influences on patterns of substitutions in the human alpha-interferon gene family. 局部DNA影响人类α -干扰素基因家族替代模式的证据。
Canadian journal of genetics and cytology. Journal canadien de genetique et de cytologie Pub Date : 1986-08-01 DOI: 10.1139/g86-072
G B Golding, B W Glickman
{"title":"Evidence for local DNA influences on patterns of substitutions in the human alpha-interferon gene family.","authors":"G B Golding,&nbsp;B W Glickman","doi":"10.1139/g86-072","DOIUrl":"https://doi.org/10.1139/g86-072","url":null,"abstract":"<p><p>The evolutionary history of genes can be used to examine patterns of spontaneous mutation if the sequences are sufficiently extensive to provide reliable data. Many human alpha-interferon genes have been sequenced and they form a large multigene family including several pseudogenes. A phylogenetic history for 15 human interferon sequences was reconstructed and their ancestral sequences inferred using a maximum parsimony method. This evolutionary history provided a record of more than 738 spontaneous mutations that have occurred in man's recent evolution. Of these mutations, more than 267 base substitution and deletion-insertion events were analyzed to determine the possible effects of nearby DNA sequences. Many substitutions occur at the end of long runs of identical bases and some dinucleotide pairs may mutate more often than others. Because templating by local DNA sequences has been implicated in prokaryotic mutation, the sequences were also examined for nearby repeats that include the substituted nucleotide and hence are potentially capable of templating the substitution. The majority of sequence alterations examined have either a similar direct repeat or palindrome nearby. Often such templates can account for simultaneous multiple mutations. These results suggest that sequence-directed events may occur occasionally in eukaryotes and that neighbouring DNA sequences can influence both the occurrence and types of mutations in several different ways.</p>","PeriodicalId":9589,"journal":{"name":"Canadian journal of genetics and cytology. Journal canadien de genetique et de cytologie","volume":"28 4","pages":"483-96"},"PeriodicalIF":0.0,"publicationDate":"1986-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1139/g86-072","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"14874983","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: 11
Nuclear DNA variation in Piper (Piperaceae) 胡椒科胡椒的核DNA变异
Canadian journal of genetics and cytology. Journal canadien de genetique et de cytologie Pub Date : 1986-06-23 DOI: 10.1139/G86-145
R. Samuel, J. B. Smith, M. D. Bennett
{"title":"Nuclear DNA variation in Piper (Piperaceae)","authors":"R. Samuel, J. B. Smith, M. D. Bennett","doi":"10.1139/G86-145","DOIUrl":"https://doi.org/10.1139/G86-145","url":null,"abstract":"Significant interspecific variation in DNA amount was observed among nine species of Piper. The DNA amount of a wild octoploid accession of Piper nigrum was approximately double that of the cultivated tetraploid variety of the same species. However, three New World diploid species had higher nuclear DNA amounts than several New or Old World tetraploid species. The DNA content per basic genome was, on the whole, lower in cultivated than in wild species.Key words: Piperaceae, Piper, Piper nigrum (black pepper), polyploids, DNA amounts.","PeriodicalId":9589,"journal":{"name":"Canadian journal of genetics and cytology. Journal canadien de genetique et de cytologie","volume":"78 1","pages":"1041-1043"},"PeriodicalIF":0.0,"publicationDate":"1986-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78237128","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: 19
Meiosis in Triticum aestivum × Elytrigia repens hybrids 小麦与偃麦草杂交的减数分裂
Canadian journal of genetics and cytology. Journal canadien de genetique et de cytologie Pub Date : 1986-06-01 DOI: 10.1139/G86-064
G. Fedak, A. Comeau, C. St-Pierre
{"title":"Meiosis in Triticum aestivum × Elytrigia repens hybrids","authors":"G. Fedak, A. Comeau, C. St-Pierre","doi":"10.1139/G86-064","DOIUrl":"https://doi.org/10.1139/G86-064","url":null,"abstract":"The average meiotic configuration in Triticum aestivum × Elytrigia repens hybrids was 31.951 + 4.97 II + 0.03 IV per cell. Chromosome synapsis was likely due to autosyndesis between chromosomes of the S genomes and not due to intergenomic homology.Key words: hybrids, intergeneric, Elytrigia repens, Triticum aestivum, chromosome synapsis.","PeriodicalId":9589,"journal":{"name":"Canadian journal of genetics and cytology. Journal canadien de genetique et de cytologie","volume":"233 1","pages":"430-432"},"PeriodicalIF":0.0,"publicationDate":"1986-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73078351","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: 9
Cytogenetic stability of aneuploid maize tissue cultures 玉米非整倍体组织培养的细胞遗传学稳定性
Canadian journal of genetics and cytology. Journal canadien de genetique et de cytologie Pub Date : 1986-06-01 DOI: 10.1139/G86-055
C. Rhodes, R. Phillips, C. E. Green
{"title":"Cytogenetic stability of aneuploid maize tissue cultures","authors":"C. Rhodes, R. Phillips, C. E. Green","doi":"10.1139/G86-055","DOIUrl":"https://doi.org/10.1139/G86-055","url":null,"abstract":"Monosomic maize tissue cultures might be used to select recessive mutations of cellular traits. This strategy would avoid some of the problems encountered with haploid cultures such as lack of vigor, sterility of regenerated plants, and uncontrolled diploidization. Monosomic and other aneuploid plants were selected among progeny of W22 R/r-x1 crossed with genetic stocks containing recessive markers. The r-x1 allele induces aneuploidy at a frequency of about 15%. Immature tassels of selected plants were used to initiate totipotent tissue cultures. Plants were regenerated from the cultures over a period of 3 to 17 months after culture initiation. Meiotic karyotypes of microsporocytes and pollen sterility were analyzed in regenerated plants. At least 40% of the 161 plants regenerated from aneuploid cultures had altered karyotypes. This frequency was not related to culture age. Most alterations involved chromosome breakage rather than changes in chromosome number. Types of alterations included heteromorphic p...","PeriodicalId":9589,"journal":{"name":"Canadian journal of genetics and cytology. Journal canadien de genetique et de cytologie","volume":"6 1","pages":"374-384"},"PeriodicalIF":0.0,"publicationDate":"1986-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79894953","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: 22
Meiotic pairing in haploids and amphidiploids of spontaneous versus synthetic origin in rape, Brassica napus L. 甘蓝型油菜单倍体和雌雄二倍体自然起源与合成起源减数分裂配对研究。
Canadian journal of genetics and cytology. Journal canadien de genetique et de cytologie Pub Date : 1986-06-01 DOI: 10.1139/G86-049
T. Attia, G. Röbbelen
{"title":"Meiotic pairing in haploids and amphidiploids of spontaneous versus synthetic origin in rape, Brassica napus L.","authors":"T. Attia, G. Röbbelen","doi":"10.1139/G86-049","DOIUrl":"https://doi.org/10.1139/G86-049","url":null,"abstract":"Newly resynthesized AC amphihaploids, which were characterized by high meiotic pairing and multivalent formulation, after doubling of their chromosome number showed preferential pairing and bivalent formation in the resynthesized amphidiploid Brassica napus (AACC). However, univalents as well as multivalents were also formed indicating that their chromosome behaviour was not fully diploidized. Stabilization of chromosome pairing in newly resynthesized amphidiploids can be achieved through genetic control or structural modification of the homoeologous chromosomes. A comparison of the meiotic behaviour of spontaneous haploids of natural rapeseed with that of the newly synthesized AC amphihaploids provides some evidence that both processes may be involved in the regulation of chromosome pairing in Brassica.Key words: Brassica, amphihaploid, amphidiploid, meiosis, univalents, multivalents.","PeriodicalId":9589,"journal":{"name":"Canadian journal of genetics and cytology. Journal canadien de genetique et de cytologie","volume":"27 1","pages":"330-334"},"PeriodicalIF":0.0,"publicationDate":"1986-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84195421","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: 50
Generation by a polymorphic supernumerary segment of recombination in a normally achiasmate proximal region in Acrotylus insubricus (Scopoli) (Orthoptera, Acrididae) 棘背蝗(直翅目，蝗科)近端正常成就的多态重组片段的产生
Canadian journal of genetics and cytology. Journal canadien de genetique et de cytologie Pub Date : 1986-06-01 DOI: 10.1139/G86-065
J. S. Rufas, J. Suja, C. G. Vega
{"title":"Generation by a polymorphic supernumerary segment of recombination in a normally achiasmate proximal region in Acrotylus insubricus (Scopoli) (Orthoptera, Acrididae)","authors":"J. S. Rufas, J. Suja, C. G. Vega","doi":"10.1139/G86-065","DOIUrl":"https://doi.org/10.1139/G86-065","url":null,"abstract":"Four of 20 males collected from a Spanish natural population of Acrotylus insubricus (Scopoli) present a supernumerary segment that is distally located in one of the chromosomes of the M9 bivalent....","PeriodicalId":9589,"journal":{"name":"Canadian journal of genetics and cytology. Journal canadien de genetique et de cytologie","volume":"29 1","pages":"433-438"},"PeriodicalIF":0.0,"publicationDate":"1986-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81197860","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
Realized genetic parameters from an antagonistic selection index in Tribolium castaneum 从一个拮抗选择指数实现了木犀草的遗传参数
Canadian journal of genetics and cytology. Journal canadien de genetique et de cytologie Pub Date : 1986-06-01 DOI: 10.1139/G86-053
J. Campo, L. G. Raya
{"title":"Realized genetic parameters from an antagonistic selection index in Tribolium castaneum","authors":"J. Campo, L. G. Raya","doi":"10.1139/G86-053","DOIUrl":"https://doi.org/10.1139/G86-053","url":null,"abstract":"Simultaneous selection of two highly correlated traits was practiced in Tribolium castaneum in a replicated experiment for six generations. Two lines were selected in each of three replicates: P+A− for an antagonistic selection index to increase pupal weight at 21 days and decrease adult weight at 31 days, and P−A+ for an antagonistic selection index to decrease pupal weight and increase adult weight. Genetic correlation between pupal and adult weights estimated in the base population was 0.95. Estimates of realized heritabilities and genetic correlation were obtained and compared with full-sib estimates. For the aggregate genotype, the P+A− line had a significant positive selection response, while the P−A+ line showed a significant negative response as would be expected. The response to divergent selection was asymmetrical, being less for the low pupal weight and high adult weight line than vice versa. Less asymmetry was found for the realized heritability, which agreed very well with the index heritabil...","PeriodicalId":9589,"journal":{"name":"Canadian journal of genetics and cytology. Journal canadien de genetique et de cytologie","volume":"34 1","pages":"358-364"},"PeriodicalIF":0.0,"publicationDate":"1986-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89948464","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: 4
Alien chromosome fragments conditioning resistance to beet cyst nematode in diploid descendants from monosomic additions of Beta procumbens to B. vulgaris 异源染色体片段调节了原藜单体添加到普通甜菜二倍体后代对甜菜囊肿线虫的抗性
Canadian journal of genetics and cytology. Journal canadien de genetique et de cytologie Pub Date : 1986-06-01 DOI: 10.1139/G86-066
J. Jong, G. Speckmann, T. S. Bock, W. Lange, A. V. Voorst
{"title":"Alien chromosome fragments conditioning resistance to beet cyst nematode in diploid descendants from monosomic additions of Beta procumbens to B. vulgaris","authors":"J. Jong, G. Speckmann, T. S. Bock, W. Lange, A. V. Voorst","doi":"10.1139/G86-066","DOIUrl":"https://doi.org/10.1139/G86-066","url":null,"abstract":"A monosomic addition plant of Beta vulgaris, containing an extra chromosome of B. procumbens with a gene for resistance to the beet cyst nematode, gave rise to a diploid descendant with an addition...","PeriodicalId":9589,"journal":{"name":"Canadian journal of genetics and cytology. Journal canadien de genetique et de cytologie","volume":"31 1","pages":"439-443"},"PeriodicalIF":0.0,"publicationDate":"1986-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81310437","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: 30
Expression of senescence in Neurospora intermedia 中间神经孢子虫衰老的表达
Canadian journal of genetics and cytology. Journal canadien de genetique et de cytologie Pub Date : 1986-06-01 DOI: 10.1139/G86-069
A. Griffiths, S. Kraus, H. Bertrand
{"title":"Expression of senescence in Neurospora intermedia","authors":"A. Griffiths, S. Kraus, H. Bertrand","doi":"10.1139/G86-069","DOIUrl":"https://doi.org/10.1139/G86-069","url":null,"abstract":"Kalilo cytoplasms of Neurospora intermedia have been shown to express senescence in two ways. First, by the previously reported way of death in a subculture series, and second, as reported here, by...","PeriodicalId":9589,"journal":{"name":"Canadian journal of genetics and cytology. Journal canadien de genetique et de cytologie","volume":"18 1","pages":"459-467"},"PeriodicalIF":0.0,"publicationDate":"1986-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84647733","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: 21
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