Cytological analysis of hybrids among triticales and trigopiros
We studied three different tricepiros: (Don Santiago x Don Noé), (Cumé x Horovitz) and (Cumé x Don Noé). The tricepiro (Don Santiago x Don Noé) was obtained by crossing the triticale Don Santiago INTA (AABBRR, 2n = 6x = 42) with the trigopiro Don Noé INTA (AABBDDJJ, 2n = 8x = 56). The number of chro...
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todo:paper_14154757_v32_n4_p797_Fradkin2023-10-03T16:13:10Z Cytological analysis of hybrids among triticales and trigopiros Fradkin, M. Greizerstein, E. Paccapelo, H. Ferreira, V. Grassi, E. Poggio, L. Ferrari, M.R. Hybrids Meiosis Reductional division Tricepiro Univalents genomic DNA allopolyploidy anaphase article chromatid chromosome analysis chromosome number cultivar fluorescence in situ hybridization genomic in situ hybridization hybrid meiosis nonhuman plant chromosome rye Secale cereale Triticosecale We studied three different tricepiros: (Don Santiago x Don Noé), (Cumé x Horovitz) and (Cumé x Don Noé). The tricepiro (Don Santiago x Don Noé) was obtained by crossing the triticale Don Santiago INTA (AABBRR, 2n = 6x = 42) with the trigopiro Don Noé INTA (AABBDDJJ, 2n = 8x = 56). The number of chromosomes for the F1 was 2n = 49, the most frequent meiotic configuration being 14 bivalents and 21 univalents. The univalents were situated in the periphery of the equatorial plane, whereas the bivalents were located in the central zone. The chromatids in some of the univalents split when bivalents underwent reductional division in anaphase I. There were few laggard chromosomes or chromatids at this phase. The number of chromosomes (2n = 48-58) was high and variable, and the number of bivalents per cell (18-23) also high in F3 individuals. In all F8 tricepiros (Don Santiago x Don Noé), F12 tricepiros (Cumé x Horovitz) and F12 tricepiros (Cumé x Don Noé), the number of chromosomes (2n = 42) was the same, these retaining the rye genome, as demonstrated by GISH and FISH. These new synthesized allopolyploids constitute interesting models for investigating the evolutionary changes responsible for diploidization, and the chromosomal and genomic re-ordering that cannot be revealed in natural allopolyploids. Copyright © 2009, Sociedade Brasileira de Genética. Fil:Fradkin, M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Greizerstein, E. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Poggio, L. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Ferrari, M.R. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_14154757_v32_n4_p797_Fradkin |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Hybrids Meiosis Reductional division Tricepiro Univalents genomic DNA allopolyploidy anaphase article chromatid chromosome analysis chromosome number cultivar fluorescence in situ hybridization genomic in situ hybridization hybrid meiosis nonhuman plant chromosome rye Secale cereale Triticosecale |
| spellingShingle |
Hybrids Meiosis Reductional division Tricepiro Univalents genomic DNA allopolyploidy anaphase article chromatid chromosome analysis chromosome number cultivar fluorescence in situ hybridization genomic in situ hybridization hybrid meiosis nonhuman plant chromosome rye Secale cereale Triticosecale Fradkin, M. Greizerstein, E. Paccapelo, H. Ferreira, V. Grassi, E. Poggio, L. Ferrari, M.R. Cytological analysis of hybrids among triticales and trigopiros |
| topic_facet |
Hybrids Meiosis Reductional division Tricepiro Univalents genomic DNA allopolyploidy anaphase article chromatid chromosome analysis chromosome number cultivar fluorescence in situ hybridization genomic in situ hybridization hybrid meiosis nonhuman plant chromosome rye Secale cereale Triticosecale |
| description |
We studied three different tricepiros: (Don Santiago x Don Noé), (Cumé x Horovitz) and (Cumé x Don Noé). The tricepiro (Don Santiago x Don Noé) was obtained by crossing the triticale Don Santiago INTA (AABBRR, 2n = 6x = 42) with the trigopiro Don Noé INTA (AABBDDJJ, 2n = 8x = 56). The number of chromosomes for the F1 was 2n = 49, the most frequent meiotic configuration being 14 bivalents and 21 univalents. The univalents were situated in the periphery of the equatorial plane, whereas the bivalents were located in the central zone. The chromatids in some of the univalents split when bivalents underwent reductional division in anaphase I. There were few laggard chromosomes or chromatids at this phase. The number of chromosomes (2n = 48-58) was high and variable, and the number of bivalents per cell (18-23) also high in F3 individuals. In all F8 tricepiros (Don Santiago x Don Noé), F12 tricepiros (Cumé x Horovitz) and F12 tricepiros (Cumé x Don Noé), the number of chromosomes (2n = 42) was the same, these retaining the rye genome, as demonstrated by GISH and FISH. These new synthesized allopolyploids constitute interesting models for investigating the evolutionary changes responsible for diploidization, and the chromosomal and genomic re-ordering that cannot be revealed in natural allopolyploids. Copyright © 2009, Sociedade Brasileira de Genética. |
| format |
JOUR |
| author |
Fradkin, M. Greizerstein, E. Paccapelo, H. Ferreira, V. Grassi, E. Poggio, L. Ferrari, M.R. |
| author_facet |
Fradkin, M. Greizerstein, E. Paccapelo, H. Ferreira, V. Grassi, E. Poggio, L. Ferrari, M.R. |
| author_sort |
Fradkin, M. |
| title |
Cytological analysis of hybrids among triticales and trigopiros |
| title_short |
Cytological analysis of hybrids among triticales and trigopiros |
| title_full |
Cytological analysis of hybrids among triticales and trigopiros |
| title_fullStr |
Cytological analysis of hybrids among triticales and trigopiros |
| title_full_unstemmed |
Cytological analysis of hybrids among triticales and trigopiros |
| title_sort |
cytological analysis of hybrids among triticales and trigopiros |
| url |
http://hdl.handle.net/20.500.12110/paper_14154757_v32_n4_p797_Fradkin |
| work_keys_str_mv |
AT fradkinm cytologicalanalysisofhybridsamongtriticalesandtrigopiros AT greizersteine cytologicalanalysisofhybridsamongtriticalesandtrigopiros AT paccapeloh cytologicalanalysisofhybridsamongtriticalesandtrigopiros AT ferreirav cytologicalanalysisofhybridsamongtriticalesandtrigopiros AT grassie cytologicalanalysisofhybridsamongtriticalesandtrigopiros AT poggiol cytologicalanalysisofhybridsamongtriticalesandtrigopiros AT ferrarimr cytologicalanalysisofhybridsamongtriticalesandtrigopiros |
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1807320668089352192 |