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Xing L, Yuan L, Lv Z, Wang Q, Yin C, Huang Z, Liu J, Cao S, Zhang R, Chen P, Karafiátová M, Vrána J, Bartoš J, Doležel J, Cao A. Long-range assembly of sequences helps to unravel the genome structure and small variation of the wheat-Haynaldia villosa translocated chromosome 6VS.6AL. PLANT BIOTECHNOLOGY JOURNAL 2021; 19:1567-1578. [PMID: 33606347 PMCID: PMC8384597 DOI: 10.1111/pbi.13570] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Accepted: 02/06/2021] [Indexed: 05/07/2023]
Abstract
Genomics studies in wild species of wheat have been limited due to the lack of references; however, new technologies and bioinformatics tools have much potential to promote genomic research. The wheat-Haynaldia villosa translocation line T6VS·6AL has been widely used as a backbone parent of wheat breeding in China. Therefore, revealing the genome structure of translocation chromosome 6VS·6AL will clarify how this chromosome formed and will help to determine how it affects agronomic traits. In this study, chromosome flow sorting, NGS sequencing and Chicago long-range linkage assembly were innovatively used to produce the assembled sequences of 6VS·6AL, and gene prediction and genome structure characterization at the molecular level were effectively performed. The analysis discovered that the short arm of 6VS·6AL was actually composed of a large distal segment of 6VS, a small proximal segment of 6AS and the centromere of 6A, while the collinear region in 6VS corresponding to 230-260 Mb of 6AS-Ta was deleted when the recombination between 6VS and 6AS occurred. In addition to the molecular mechanism of the increased grain weight and enhanced spike length produced by the translocation chromosome, it may be correlated with missing GW2-V and an evolved NRT-V cluster. Moreover, a fine physical bin map of 6VS was constructed by the high-throughput developed 6VS-specific InDel markers and a series of newly identified small fragment translocation lines involving 6VS. This study will provide essential information for mining of new alien genes carried by the 6VS·6AL translocation chromosome.
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Affiliation(s)
- Liping Xing
- National Key Laboratory of Crop Genetics and Germplasm EnhancementCytogenetics InstituteNanjing Agricultural University/JCIC‐MCPNanjingChina
| | - Lu Yuan
- National Key Laboratory of Crop Genetics and Germplasm EnhancementCytogenetics InstituteNanjing Agricultural University/JCIC‐MCPNanjingChina
| | - Zengshuai Lv
- National Key Laboratory of Crop Genetics and Germplasm EnhancementCytogenetics InstituteNanjing Agricultural University/JCIC‐MCPNanjingChina
| | - Qiang Wang
- National Key Laboratory of Crop Genetics and Germplasm EnhancementCytogenetics InstituteNanjing Agricultural University/JCIC‐MCPNanjingChina
| | - Chunhong Yin
- National Key Laboratory of Crop Genetics and Germplasm EnhancementCytogenetics InstituteNanjing Agricultural University/JCIC‐MCPNanjingChina
| | - Zhenpu Huang
- National Key Laboratory of Crop Genetics and Germplasm EnhancementCytogenetics InstituteNanjing Agricultural University/JCIC‐MCPNanjingChina
| | - Jiaqian Liu
- National Key Laboratory of Crop Genetics and Germplasm EnhancementCytogenetics InstituteNanjing Agricultural University/JCIC‐MCPNanjingChina
| | - Shuqi Cao
- National Key Laboratory of Crop Genetics and Germplasm EnhancementCytogenetics InstituteNanjing Agricultural University/JCIC‐MCPNanjingChina
| | - Ruiqi Zhang
- National Key Laboratory of Crop Genetics and Germplasm EnhancementCytogenetics InstituteNanjing Agricultural University/JCIC‐MCPNanjingChina
| | - Peidu Chen
- National Key Laboratory of Crop Genetics and Germplasm EnhancementCytogenetics InstituteNanjing Agricultural University/JCIC‐MCPNanjingChina
| | - Miroslava Karafiátová
- Institute of Experimental Botany of the Czech Academy of SciencesCentre of the Region Haná for Biotechnological and Agricultural ResearchOlomoucCzech Republic
| | - Jan Vrána
- Institute of Experimental Botany of the Czech Academy of SciencesCentre of the Region Haná for Biotechnological and Agricultural ResearchOlomoucCzech Republic
| | - Jan Bartoš
- Institute of Experimental Botany of the Czech Academy of SciencesCentre of the Region Haná for Biotechnological and Agricultural ResearchOlomoucCzech Republic
| | - Jaroslav Doležel
- Institute of Experimental Botany of the Czech Academy of SciencesCentre of the Region Haná for Biotechnological and Agricultural ResearchOlomoucCzech Republic
| | - Aizhong Cao
- National Key Laboratory of Crop Genetics and Germplasm EnhancementCytogenetics InstituteNanjing Agricultural University/JCIC‐MCPNanjingChina
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Xing L, Di Z, Yang W, Liu J, Li M, Wang X, Cui C, Wang X, Wang X, Zhang R, Xiao J, Cao A. Overexpression of ERF1-V from Haynaldia villosa Can Enhance the Resistance of Wheat to Powdery Mildew and Increase the Tolerance to Salt and Drought Stresses. FRONTIERS IN PLANT SCIENCE 2017; 8:1948. [PMID: 29238352 PMCID: PMC5712803 DOI: 10.3389/fpls.2017.01948] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/14/2017] [Accepted: 10/30/2017] [Indexed: 05/04/2023]
Abstract
The APETALA 2/Ethylene-responsive element binding factor (AP2/ERF) transcription factor gene family is widely involved in the biotic and abiotic stress regulation. Haynaldia villosa (VV, 2n = 14), a wild species of wheat, is a potential gene pool for wheat improvement. H. villosa confers high resistance to several wheat diseases and high tolerance to some abiotic stress. In this study, ERF1-V, an ethylene-responsive element-binding factor gene of the AP2/ERF transcription factor gene family from wild H. villosa, was cloned and characterized. Sequence and phylogenetic analysis showed that ERF1-V is a deduced B2 type ERF gene. ERF1-V was first identified as a Blumeria graminis f. sp. tritici (Bgt) up-regulated gene, and later found to be induced by drought, salt and cold stresses. In responses to hormones, ERF1-V was up-regulated by ethylene and abscisic acid, but down-regulated by salicylic acid and jasmonic acid. Over expression of ERF1-V in wheat could improve resistance to powdery mildew, salt and drought stress. Chlorophyll content, malondialdehyde content, superoxide dismutase and peroxidase activity were significantly differences between the recipient Yangmai158 and the transgenic plants following salt treatment. Furthermore, the expression levels of some stress responsive genes were differences after drought or salt treatments. Although ERF1-V was activated by the constitutive promoter, the agronomic traits, including flowering time, plant height, effective tiller number, spikelet number per spike and grain size, did not changed significantly. ERF1-V is a valuable gene for wheat improvement by genetic engineering.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | - Aizhong Cao
- National Key Laboratory of Crop Genetics and Germplasm Enhancement, Cytogenetics Institute, Jiangsu Collaborative Innovation Center for Modern Crop Production, Nanjing Agricultural University, Nanjing, China
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Zhang J, Jiang Y, Xuan P, Guo Y, Deng G, Yu M, Long H. Isolation of two new retrotransposon sequences and development of molecular and cytological markers for Dasypyrum villosum (L.). Genetica 2017. [PMID: 28638972 DOI: 10.1007/s10709-017-9972-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Dasypyrum villosum is a valuable genetic resource for wheat improvement. With the aim to efficiently monitor the D. villosum chromatin introduced into common wheat, two novel retrotransposon sequences were isolated by RAPD, and were successfully converted to D. villosum-specific SCAR markers. In addition, we constructed a chromosomal karyotype of D. villosum. Our results revealed that different accessions of D. villosum showed slightly different signal patterns, indicating that distribution of repeats did not diverge significantly among D. villosum accessions. The two SCAR markers and FISH karyotype of D. villosum could be used for efficient and precise identification of D. villosum chromatin in wheat breeding.
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Affiliation(s)
- Jie Zhang
- Institute of Biotechnology and Nuclear Technology Research, Sichuan Academy of Agricultural Sciences, Chengdu, 610061, Sichuan, China.,Key Laboratory of Wheat Biology and Genetic Improvement on Southwestern China (Ministry of Agriculture), Chengdu, 610066, Sichuan, China
| | - Yun Jiang
- Institute of Biotechnology and Nuclear Technology Research, Sichuan Academy of Agricultural Sciences, Chengdu, 610061, Sichuan, China
| | - Pu Xuan
- Institute of Agro-Products Processing Science and Technology, Sichuan Academy of Agricultural Sciences, Chengdu, 610066, Sichuan, China
| | - Yuanlin Guo
- Institute of Biotechnology and Nuclear Technology Research, Sichuan Academy of Agricultural Sciences, Chengdu, 610061, Sichuan, China
| | - Guangbing Deng
- Chengdu Institute of Biology, Chinese Academy of Sciences, 9 Section 4, Renmin South Road, Chengdu, 610041, Sichuan, China
| | - Maoqun Yu
- Chengdu Institute of Biology, Chinese Academy of Sciences, 9 Section 4, Renmin South Road, Chengdu, 610041, Sichuan, China
| | - Hai Long
- Chengdu Institute of Biology, Chinese Academy of Sciences, 9 Section 4, Renmin South Road, Chengdu, 610041, Sichuan, China.
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Fakhri Z, Mirzaghaderi G, Ahmadian S, Mason AS. Unreduced gamete formation in wheat × Aegilops spp. hybrids is genotype specific and prevented by shared homologous subgenomes. PLANT CELL REPORTS 2016; 35:1143-54. [PMID: 26883221 DOI: 10.1007/s00299-016-1951-9] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2016] [Accepted: 02/03/2016] [Indexed: 05/22/2023]
Abstract
The presence of homologous subgenomes inhibited unreduced gamete formation in wheat × Aegilops interspecific hybrids. Unreduced gamete rates were under the control of the wheat nuclear genome. Production of unreduced gametes is common among interspecific hybrids, and may be affected by parental genotypes and genomic similarity. In the present study, five cultivars of Triticum aestivum and two tetraploid Aegilops species (i.e. Ae. triuncialis and Ae. cylindrica) were reciprocally crossed to produce 20 interspecific hybrid combinations. These hybrids comprised two different types: T. aestivum × Aegilops triuncialis; 2n = ABDU(t)C(t) (which lack a common subgenome) and T. aestivum × Ae. cylindrica; 2n = ABDD(c)C(c) (which share a common subgenome). The frequency of unreduced gametes in F1 hybrids was estimated in sporads from the frequency of dyads, and the frequency of viable pollen, germinated pollen and seed set were recorded. Different meiotic abnormalities recorded in the hybrids included precocious chromosome migration to the poles at metaphase I and II, laggards in anaphase I and II, micronuclei and chromosome stickiness, failure in cell wall formation, premature cytokinesis and microspore fusion. The mean frequency of restitution meiosis was 10.1 %, and the mean frequency of unreduced viable pollen was 4.84 % in T. aestivum × Ae. triuncialis hybrids. By contrast, in T. aestivum × Ae. cylindrica hybrids no meiotic restitution was observed, and a low rate of viable gametes (0.3 %) was recorded. This study present evidence that high levels of homologous pairing between the D and D(c) subgenomes may interfere with meiotic restitution and the formation of unreduced gametes. Variation in unreduced gamete production was also observed between T. aestivum × Ae. triuncialis hybrid plants, suggesting genetic control of this trait.
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Affiliation(s)
- Zhaleh Fakhri
- Department of Agronomy and Plant Breeding, Faculty of Agriculture, University of Kurdistan, P. O. Box 416, Sanandaj, Iran
| | - Ghader Mirzaghaderi
- Department of Agronomy and Plant Breeding, Faculty of Agriculture, University of Kurdistan, P. O. Box 416, Sanandaj, Iran.
| | - Samira Ahmadian
- Department of Agronomy and Plant Breeding, Faculty of Agriculture, University of Kurdistan, P. O. Box 416, Sanandaj, Iran
| | - Annaliese S Mason
- IFZ Research Centre for Biosystems, Land Use and Nutrition, Department of Plant Breeding, Justus Liebig University, Heinrich-Buff-Ring 26-32, 35392, Giessen, Germany
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Zhang J, Long H, Pan Z, Liang J, Yu S, Deng G, Yu M. Characterization of a genome-specific Gypsy-like retrotransposon sequence and development of a molecular marker specific for Dasypyrum villosum (L.). J Genet 2013; 92:103-8. [PMID: 23640412 DOI: 10.1007/s12041-013-0218-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Jie Zhang
- Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, People's Republic of China
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Yuan WY, Tomita M. Centromeric distribution of 350-family inDasypyrum villosumand its application to identifyingDasypyrumchromatin in the wheat genome. Hereditas 2009; 146:58-66. [DOI: 10.1111/j.1601-5223.2009.02110.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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Identification of Dasypyrum villosum (L.) P. Candargy genetic material introgression to rye using RAPD and STS molecular markers. ACTA ACUST UNITED AC 2009. [DOI: 10.2478/v10081-009-0025-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Tiwari VK, Rawat N, Neelam K, Randhawa GS, Singh K, Chhuneja P, Dhaliwal HS. Development of Triticum turgidum subsp. durum--Aegilops longissima amphiploids with high iron and zinc content through unreduced gamete formation in F1 hybrids. Genome 2008; 51:757-66. [PMID: 18772954 DOI: 10.1139/g08-057] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Four different interspecific hybrids involving three different accessions of Aegilops longissima Schweinf. & Muschl. with high grain iron and zinc content and three Triticum turgidum L. subsp. durum (Desf.) Husn. cultivars with low micronutrient content were made for durum wheat biofortification and investigated for chromosome pairing, fertility, putative amphiploidy, and micronutrient content. The chromosome pairing in the 21-chromosome F1 hybrids (ABSl) consisted of 0-6 rod bivalents and occasionally 1 trivalent. All the F1 hybrids, however, unexpectedly showed partial but variable fertility. The detailed meiotic investigation indicated the simultaneous occurrence of two types of aberrant meiotic divisions, namely first-division restitution and single-division meiosis, leading to regular dyads and unreduced gamete formation and fertility. The F2 seeds, being putative amphiploids (AABBSlSl), had nearly double the chromosome number (40-42) and regular meiosis and fertility. The F1 hybrids were intermediate between the two parents for different morphological traits. The putative amphiploids with bold seed size had higher grain ash content and ash iron and zinc content than durum wheat cultivars, suggesting that Ae. longissima possesses a better genetic system(s) for uptake and seed sequestration of iron and zinc, which could be transferred to elite durum and bread wheat cultivars and exploited.
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Affiliation(s)
- Vijay K Tiwari
- Department of Biotechnology, Indian Institute of Technology, Roorkee 247667, Uttarakhand, India
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Zhang LQ, Yen Y, Zheng YL, Liu DC. Meiotic restriction in emmer wheat is controlled by one or more nuclear genes that continue to function in derived lines. ACTA ACUST UNITED AC 2007. [DOI: 10.1007/s00497-007-0052-x] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Minelli S, Ceccarelli M, Mariani M, De Pace C, Cionini PG. Cytogenetics of Triticum × Dasypyrum hybrids and derived lines. Cytogenet Genome Res 2005; 109:385-92. [PMID: 15753601 DOI: 10.1159/000082424] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2003] [Accepted: 05/10/2004] [Indexed: 11/19/2022] Open
Abstract
Genomic in situ hybridization was used to study Triticum x Dasypyrum wide hybrids and derived lines. A cytogenetic investigation was carried out in progenies of (i) amphiploids derived from T. turgidum var. durum (T. durum; 2n = 14; genomes AABB) x D. villosum (2n = 14; genome VV), (ii) three-parental hybrids (T. durum x D. villosum) x T. aestivum (2n = 42, genomes A'A'B'B'D'D'), and (iii) T. aestivum aneuploid lines carrying D. villosum chromosomes or chromatin. The amphiploids derived from T. durum x D. villosum showed a stable chromosomal constitution, made up of 14 V chromosomes, 14 chromosomes carrying the wheat A genome and 14 chromosomes carrying the B genome. High karyological instability was observed in the progenies of three-parental hybrids ([T. durum x D. villosum] x T. aestivum). Plants having the expected 14 A chromosomes, 14 B chromosomes, 7 D chromosomes, and 7 V chromosomes were rather rare (4.5%). Many progeny plants (45.5%) had the hexaploid wheat genome with 42 chromosomes and lacked any detectable D. villosum chromatin. Other plants (50%) had 14 A chromosomes and 14 B chromosomes, plus variable numbers of D and V chromosomes, the former being better retained than the latter in most cases. Some T. aestivum lines carrying D. villosum chromosomes or chromatin, as the result of addition, substitution, or recombination events or even a combination of these karyological events, were found to be stable. Other lines were unstable, and these lines carried 1V, 3V, or 5V chromosomes or their portions. Substitution or recombination events where 1V chromosomes were involved could concern the homeologous counterparts in both the A and B and D genomes of wheat. No line could be recovered where the shorter arm of 3V chromosomes was present. Changes in the morphology and banding pattern of V chromosomes were observed in hybrids that did not carry the entire D. villosum complement. By comparing the results of our cytogenetic analyses with certain phenotypic characteristics of the lines studied, genes for discrete traits could be assigned to specific V chromosomes or V chromosome arms. From the frequency of V chromosomes that were involved in chromatin exchanges with or substituted for one of their homeologous counterparts in the A, B, and D wheat genomes, it was inferred that D. villosum belongs to the same phyletic lineage as T. urartu (donor of the A genome of wheat) and Aegilops speltoides (B genome), and that Ae. squarrosa (D genome) diverged earlier from D. villosum.
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Affiliation(s)
- S Minelli
- Dipartimento di Biologia Cellulare e Molecolare, Sezione di Citologia e Genetica, Università degli Studi di Perugia, Perugia, Italy
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Yildirim A, Jones SS, Murray TD, Line RF. Evaluation of Dasypyrum villosum Populations for Resistance to Cereal Eyespot and Stripe Rust Pathogens. PLANT DISEASE 2000; 84:40-44. [PMID: 30841220 DOI: 10.1094/pdis.2000.84.1.40] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Resistance to Pseudocercosporella herpotrichoides (cause of eyespot) and Puccinia striiformis(cause of stripe rust) was evaluated in a germ plasm collection of Dasypyrum villosum (syn. Haynaldia villosa) and a set of disomic addition lines, a substitution, and a translocation line of D. villosum chromosomes in a wheat background. Three races of P. striiformis and a β-glucuronidase-transformed strain of Pseudocercosporella herpotrichoides were used to inoculate plants and evaluate disease reactions. Of the 115 D. villosum accessions tested, 33 (28.6%) were resistant to one or more races of Puccinia striiformis and 8 accessions were resistant to all races. All 219 accessions of D. villosum tested were resistant to Pseudocercosporella herpotrichoides and 158 (72%) of the accessions had lower β-glucuronidase activity than the resistant wheat line VPM-1. Most of the accessions of D. villosum resistant to the stripe rust pathogen originated from Greece; however, there was no distinction among origins for resistance to the eyespot pathogen. Chromosome 4V was confirmed to carry the gene for resistance to P. herpotrichoides. At least one gene for resistance to Puccinia striiformis was located on the short arm of chromosome 6V of D. villosum in the 6VS/6AL-translocation line; this gene was named Yr26.
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Affiliation(s)
- A Yildirim
- Department of Crop and Soil Sciences, Washington State University (WSU)
| | - S S Jones
- Department of Crop and Soil Sciences, Washington State University (WSU)
| | | | - R F Line
- USDA-ARS, WSU, Pullman 99164-6420
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Blanco A, Simeone R, Resta P. The addition of Dasypyrum villosum (L.) Candargy chromosomes to durum wheat (Triticum durum Desf.). TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 1987; 74:328-333. [PMID: 24241669 DOI: 10.1007/bf00274714] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/1986] [Accepted: 01/09/1987] [Indexed: 06/02/2023]
Abstract
Six monosomic addition lines were produced in which different Dasypyrum villosum (L.) Candargy chromosomes were added to the chromosome complement of Triticum durum Desf. cv. 'Creso'. Each added alien chromosome was found to have a specific effect on plant morphology and fertility. Transmission rate varied widely (from 7.5 to 27.7%) among the six univalent chromosomes. Different monotelosomic addition plants derived by a relatively high frequency of chromosome misdivision were isolated. The addition lines should be useful for studying Dasypyrum chromosome homoeology and the introduction of alien variation into durum and common wheats.
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Affiliation(s)
- A Blanco
- Institute of Plant Breeding, University of Bari, Bari, Italy
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Friebe B, Cermeño MC, Zeller FJ. C-banding polymorphism and the analysis of nucleolar activity in Dasypyrum villosum (L.) Candargy, its added chromosomes to hexaploid wheat and the amphiploid Triticum dicoccum - D. villosum. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 1987; 73:337-342. [PMID: 24240992 DOI: 10.1007/bf00262498] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/1986] [Accepted: 10/23/1986] [Indexed: 06/02/2023]
Abstract
C-banding patterns and nucleolar activity were analyzed in Dasypyrum villosum, its added chromosomes to hexaploid wheat and the hexaploid amphiploid Triticum dicoccum-D. villosum. Two different populations of the allogamous species D. villosum (2n= 14, VV) from Greece and Italy were analyzed showing a similar polymorphism for C-banding pattern. Six of the seven addition lines were identified by their characteristic C-banding pattern. No polymorphism between both members of each added alien chromosome was found. Furthermore, nucleolar activity and competition were studied by using silver staining procedure. In D. villosum only one chromosome pair, A, was found to be responsible for organizing nucleoli. The results obtained in the amphiploid and in the addition lines demonstrate that nucleolar activity is restricted to SAT-chromosomes 1B and 6B of wheat, while those of D. villosum remain inactive.
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Affiliation(s)
- B Friebe
- Institut für Pflanzenbau und Pflanzenzüchtung, Technische Universität München, D-8050, Freising-Weihenstephan, Germany
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14
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Hammer K, Lehmann CO, Perrino P. Die in den Jahren 1980, 1981 und 1982 in Süditalien gesammelten Getreide-Landsorten — botanische Ergebnisse. ACTA ACUST UNITED AC 1985. [DOI: 10.1007/bf01997275] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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