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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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Triple testcross analysis of F2 and irradiated F2-derived lines of Pisum sativum L. Pisum sativum F2与辐照F2衍生系的三重试验交叉分析。
Canadian journal of genetics and cytology. Journal canadien de genetique et de cytologie Pub Date : 1986-10-01 DOI: 10.1139/G86-103
D. S. Virk, D. Multani, P. Virk, M. Verma, N. Singh
{"title":"Triple testcross analysis of F2 and irradiated F2-derived lines of Pisum sativum L.","authors":"D. S. Virk, D. Multani, P. Virk, M. Verma, N. Singh","doi":"10.1139/G86-103","DOIUrl":"https://doi.org/10.1139/G86-103","url":null,"abstract":"The triple testcross breeding design was applied to a set of F7 and RF7 pure-breeding lines derived from normal and irradiated F2 seeds of the cross 'Bonneville' × T 163. Two phenotypically extreme lines and their F1 were used as testers in both control and irradiated materials. Epistasis was, in general, not an important component of variation. Additive component was the most important, while dominance was detected in 3 of 10 cases. The additive and dominance components in general decreased following irradiation as a result of additive and dominance effects of induced new alleles being smaller than those generated by the original alleles they replaced.Key words: triple testcross, irradiation, single seed descent, genetic anaylsis, pea.","PeriodicalId":9589,"journal":{"name":"Canadian journal of genetics and cytology. Journal canadien de genetique et de cytologie","volume":"89 1","pages":"732-734"},"PeriodicalIF":0.0,"publicationDate":"1986-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77185326","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: 1
Inheritance and linkage of allozymes in seed tissue of whitebark pine 白皮松种子组织中同工酶的遗传与连锁
Canadian journal of genetics and cytology. Journal canadien de genetique et de cytologie Pub Date : 1986-08-01 DOI: 10.1139/G86-088
G. Furnier, P. Knowles, M. Aleksiuk, B. Dancik
{"title":"Inheritance and linkage of allozymes in seed tissue of whitebark pine","authors":"G. Furnier, P. Knowles, M. Aleksiuk, B. Dancik","doi":"10.1139/G86-088","DOIUrl":"https://doi.org/10.1139/G86-088","url":null,"abstract":"Allozyme variants were examined for 12 enzyme systems in haploid megagametophyte tissue of whitebark pine (Pinus albicaulis Engelm.). Inheritance and linkage information is reported for 11 loci (Aat-3, Aco, Adh, Fle-2, Idh, Mdh-2, Mdh-3, Mdh-4, Mdr, Pgi-2, and Pgm-2). Deviations from a 1:1 segregation ratio were observed at Fle-2, Pgi-2, and between two of the three alleles at Mdh-4. Significant linkage was observed for two pairs of loci (Aco–Fle-2 and Adh–Pgi-2), but estimates of recombination frequencies were relatively high.Key words: Pinus albicaulis, isozymes.","PeriodicalId":9589,"journal":{"name":"Canadian journal of genetics and cytology. Journal canadien de genetique et de cytologie","volume":"24 1","pages":"601-604"},"PeriodicalIF":0.0,"publicationDate":"1986-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74056231","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: 27
Meiosis in interspecific Hordeum hybrids. I. Diploid combinations 种间杂交种的减数分裂。1 .二倍体组合
Canadian journal of genetics and cytology. Journal canadien de genetique et de cytologie Pub Date : 1986-08-01 DOI: 10.1139/G86-077
R. Bothmer, J. Flink, T. Landström
{"title":"Meiosis in interspecific Hordeum hybrids. I. Diploid combinations","authors":"R. Bothmer, J. Flink, T. Landström","doi":"10.1139/G86-077","DOIUrl":"https://doi.org/10.1139/G86-077","url":null,"abstract":"The meiotic pairing behaviour of 39 new interspecific combinations between diploid Hordeum species are reported. On the basis of this data, four \"basic genomes\" are probably present in the genus. Hordeum bulbosum and H. vulgare have the same genome (I); H. marinum (\"X\") and H. murinum (\"Y\") each have one distinct genome. All other diploid taxa have either the same or a somewhat modified form of genome H. In this latter group of diploids, the South American taxa together with H. pusillum and H. intercedens in North America constitue a homogeneous group with respect to genomic structure, which differs somewhat from that found in the other Asiatic and North American species. Hordeum roshevitzii from Central Asia is unique, showing high affinity to both the Asiatic and to the American taxa. Evidence suggesting genetic regulation of chromosome pairing (both pairing promoting and pairing reducing) was obtained from a number of the diploid hybrids.Key words: Hordeum, interspecific hybrids, meiosis, diploids.","PeriodicalId":9589,"journal":{"name":"Canadian journal of genetics and cytology. Journal canadien de genetique et de cytologie","volume":"7 1","pages":"525-535"},"PeriodicalIF":0.0,"publicationDate":"1986-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74053888","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: 139
Evidence for the existence of endosperm balance number in the true clovers (Trifolium spp.) 真三叶草(Trifolium sp .)胚乳平衡数存在的证据
Canadian journal of genetics and cytology. Journal canadien de genetique et de cytologie Pub Date : 1986-08-01 DOI: 10.1139/G86-085
W. Parrott, R. Smith
{"title":"Evidence for the existence of endosperm balance number in the true clovers (Trifolium spp.)","authors":"W. Parrott, R. Smith","doi":"10.1139/G86-085","DOIUrl":"https://doi.org/10.1139/G86-085","url":null,"abstract":"The endosperm balance number (EBN) hypothesis was first advanced to explain results from interspecific crosses in Solanum and later in Impatiens. According to the EBN hypothesis, normal endosperm development following intra- or inter-specific crosses depends on having a ratio of two EBNs from the female to one EBN from the male in the endosperm tissue. EBNs may differ among related species. Successful hybrids can be obtained between species with the same EBN. The ploidy level of an individual species can be varied to modify its EBN, making it cross compatible with a species sharing its modified EBN. Interspecific crosses within Trifolium have been limited and difficult. Crosses reported in the literature, including evidence from our own study, suggest that EBN is operating in Trifolium and have been used to assign EBN numbers to some clover species. The use of 2n eggs enabled two species, differing in EBN, to be crossed. An understanding of the EBN mechanism that operates in Trifolium should make successf...","PeriodicalId":9589,"journal":{"name":"Canadian journal of genetics and cytology. Journal canadien de genetique et de cytologie","volume":"22 1","pages":"581-586"},"PeriodicalIF":0.0,"publicationDate":"1986-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79290010","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: 28
Cytogenetic studies in gomphocerine grasshoppers. II. Chromosomal location of active nucleolar organizing regions gomphocerine蚱蜢细胞遗传学研究。2活跃核仁组织区的染色体定位
Canadian journal of genetics and cytology. Journal canadien de genetique et de cytologie Pub Date : 1986-08-01 DOI: 10.1139/G86-079
J. Cabrero, J. Camacho
{"title":"Cytogenetic studies in gomphocerine grasshoppers. II. Chromosomal location of active nucleolar organizing regions","authors":"J. Cabrero, J. Camacho","doi":"10.1139/G86-079","DOIUrl":"https://doi.org/10.1139/G86-079","url":null,"abstract":"Nucleolar organizing region (NOR) location has been studied in 20 species of gomphocerine grasshoppers. In the 17 species with 2n (♀) = 17, the largest number carry an active NOR on the L2, L3, and...","PeriodicalId":9589,"journal":{"name":"Canadian journal of genetics and cytology. Journal canadien de genetique et de cytologie","volume":"29 1","pages":"540-544"},"PeriodicalIF":0.0,"publicationDate":"1986-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87289768","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: 24
Genetic mapping of the 5S rRNA gene cluster of the nematode Caenorhabditis elegans. 秀丽隐杆线虫5S rRNA基因簇的遗传定位。
Canadian journal of genetics and cytology. Journal canadien de genetique et de cytologie Pub Date : 1986-08-01 DOI: 10.1139/g86-080
D W Nelson, B M Honda
{"title":"Genetic mapping of the 5S rRNA gene cluster of the nematode Caenorhabditis elegans.","authors":"D W Nelson,&nbsp;B M Honda","doi":"10.1139/g86-080","DOIUrl":"https://doi.org/10.1139/g86-080","url":null,"abstract":"<p><p>We have identified a restriction fragment length difference (RFLD) affecting the genomic sequences immediately flanking the 5S rRNA gene cluster in the Bristol and Bergerac strains of the nematode Caenorhabditis elegans. We have used this RFLD as a molecular marker to follow the segregation of the 5S rRNA gene cluster through a series of two- and three-factor interstrain crosses. Our results show that the 5S rRNA gene cluster maps between unc-76 and dpy-21 on the right arm of linkage group V. This genetic localization provides a linkage group V \"landmark\" with which to localize other cloned sequences by in situ hybridization.</p>","PeriodicalId":9589,"journal":{"name":"Canadian journal of genetics and cytology. Journal canadien de genetique et de cytologie","volume":"28 4","pages":"545-53"},"PeriodicalIF":0.0,"publicationDate":"1986-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1139/g86-080","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"14153427","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: 2
Location of the Ph1 locus in the metaphase chromosome map and the linkage map of the 5Bq arm of wheat 小麦中期染色体图谱和5Bq臂连锁图谱中Ph1位点的定位
Canadian journal of genetics and cytology. Journal canadien de genetique et de cytologie Pub Date : 1986-08-01 DOI: 10.1139/G86-075
R. Jampates, J. Dvorak
{"title":"Location of the Ph1 locus in the metaphase chromosome map and the linkage map of the 5Bq arm of wheat","authors":"R. Jampates, J. Dvorak","doi":"10.1139/G86-075","DOIUrl":"https://doi.org/10.1139/G86-075","url":null,"abstract":"Heterogenetic chromosome pairing in wheat is prevented by the Ph1 locus on the q (=L) arm of chromosome 5B. Two durum wheat cv. Cappelli structural mutants with rearranged 5Bq chromosome arms were investigated to determine the location of the Ph1 locus in the metaphase map and the linkage map of the arm. One of the mutants, Cap5Bq−, has a deletion of subregion 5Bq12.3 between C-bands 5Bq12.2 and 5Bq21 and the other one, Cap5Bq+, has the same subregion duplicated. Each mutant and standard cv. Cappelli were crossed with Aegilops kotschyi, Ae. ovata, Ae. cylindrica, Ae. ventricosa, Ae. juvenalis, and \"Ae. crassa 6x.\" Hybrids involving Cap5Bq− had higher levels of chromosome pairing than those involving cv. Cappelli, whereas those involving Cap5Bq+ had lower levels of pairing than those involving cv. Cappelli. Cap5Bq− was crossed with cv. Cappelli and the F1 was hybridized with Ae. kotschyi and Ae. ventricosa. All hybrids with the 5Bq− chromosome had a higher level of chromosome pairing than those with the st...","PeriodicalId":9589,"journal":{"name":"Canadian journal of genetics and cytology. Journal canadien de genetique et de cytologie","volume":"7 1","pages":"511-519"},"PeriodicalIF":0.0,"publicationDate":"1986-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79021796","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: 35
Inheritance of siliqua strength in Brassica campestris L. II. Quantitative genetic analysis 油菜(Brassica campestris L.)硅质强度的遗传。定量遗传分析
Canadian journal of genetics and cytology. Journal canadien de genetique et de cytologie Pub Date : 1986-08-01 DOI: 10.1139/G86-082
G. P. Kadkol, G. Halloran, R. Macmillan
{"title":"Inheritance of siliqua strength in Brassica campestris L. II. Quantitative genetic analysis","authors":"G. P. Kadkol, G. Halloran, R. Macmillan","doi":"10.1139/G86-082","DOIUrl":"https://doi.org/10.1139/G86-082","url":null,"abstract":"Quantitative genetic analysis of siliqua strength in Brassica campestris L. was conducted in the cross cv. Torch × DS-17-D using the North Carolina experiment II design. This revealed the presence of a high degree of nonadditive genetic variance and a high heritability (broad sense) for all measures of siliqua strength. These results are in accordance with earlier findings of the likelihood of a small number of genes controlling siliqua strength which interact epistatically.Key words: siliqua strength, shatter resistance, genetic variances (additive and nonadditive), heritability.","PeriodicalId":9589,"journal":{"name":"Canadian journal of genetics and cytology. Journal canadien de genetique et de cytologie","volume":"56 1","pages":"563-567"},"PeriodicalIF":0.0,"publicationDate":"1986-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80714960","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
Genetic variation in carotenoid pigment deposition in the red-fleshed and white-fleshed chinook salmon (Oncorhynchus tshawytscha) of Quesnel River, British Columbia 不列颠哥伦比亚省奎斯奈尔河红肉和白肉大鳞鲑鱼类胡萝卜素色素沉积的遗传变异
Canadian journal of genetics and cytology. Journal canadien de genetique et de cytologie Pub Date : 1986-08-01 DOI: 10.1139/G86-086
R. Withler
{"title":"Genetic variation in carotenoid pigment deposition in the red-fleshed and white-fleshed chinook salmon (Oncorhynchus tshawytscha) of Quesnel River, British Columbia","authors":"R. Withler","doi":"10.1139/G86-086","DOIUrl":"https://doi.org/10.1139/G86-086","url":null,"abstract":"Inheritance of the ability to deposit coloured dietary carotenoid pigments in muscle tissue was examined in 16 seapen-reared families of chinook salmon (Oncorhynchus tshawytscha) from the Quesnel River, British Columbia. The progeny red:white ratio varied significantly among families in two sample periods but not between sample periods for individual families. There was no difference between the sexes in proportions of red and white individuals. Total carotenoid extraction of muscle tissue samples from 152 progeny revealed that white individuals contained less carotenoid per gram of tissue (0.24 ± 0.04 μg) than did red ones (3.37 ± 0.14 μg). Estimates of the heritability of flesh colour, when treated as a threshold trait, were 0.93 (sire component) and 0.71 (dam component). A genetic model that invokes two genetic loci, each with two alleles, was proposed to explain the inheritance of flesh colour in Quesnel River chinook salmon. At each locus, one copy of a \"red-determining\" allele is required for colour...","PeriodicalId":9589,"journal":{"name":"Canadian journal of genetics and cytology. Journal canadien de genetique et de cytologie","volume":"23 1","pages":"587-594"},"PeriodicalIF":0.0,"publicationDate":"1986-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81296723","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
Heterochromatin organization in the nucleus of Indian muntjac (Muntiacus muntjak). 印度麂核的异染色质组织。
Canadian journal of genetics and cytology. Journal canadien de genetique et de cytologie Pub Date : 1986-08-01 DOI: 10.1139/g86-092
R S Verma, J P Jacob, A Babu
{"title":"Heterochromatin organization in the nucleus of Indian muntjac (Muntiacus muntjak).","authors":"R S Verma,&nbsp;J P Jacob,&nbsp;A Babu","doi":"10.1139/g86-092","DOIUrl":"https://doi.org/10.1139/g86-092","url":null,"abstract":"<p><p>The heterochromatin in Indian muntjac (Muntiacus muntjak) is located at the periphery of primary constrictions of all the chromosomes. The X chromosome contains significantly larger amounts of heterochromatin than the rest of the complement by C-banding technique. However, the small portion of C-band region was found to be resistant by restriction endonuclease HaeIII (5'...GG decreases CC...3') and was clearly visible on the nucleus. Therefore, the position of this large heterochromatic segment is examined at somatic metaphases. The distribution of the heterochromatin of the X chromosome observed in Indian muntjac is contrary to the general pattern observed in other species, i.e., the chromosomes consisting greater amount of heterochromatin are located more peripherally than those with lesser amount. However, the smaller Y chromosome (Y1) is frequently found at the periphery. The present findings suggest that the role of heterochromatin organization in the nucleus vary between different heterochromatic segments of the same species and vary from species to species.</p>","PeriodicalId":9589,"journal":{"name":"Canadian journal of genetics and cytology. Journal canadien de genetique et de cytologie","volume":"28 4","pages":"628-30"},"PeriodicalIF":0.0,"publicationDate":"1986-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1139/g86-092","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"14874907","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: 1
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