Single-locus inheritance in the allotetraploid Coffea arabica L. and interspecific hybrid C. arabica X C. canephora
Molecular cytogenetic analysis has indicated that Coffea arabica is an amphidiploid formed from the hybridization between two closely related diploid progenitor species, C. canephora and C. eugenioides. This study was conducted to determine the modeof inheritance in C. arabica and in a tetraploid interspecific hybrid (arabusta) between C. arabica and C. canephora, as revealed by segregation analyses of restriction fragment length polymorphism (RFLP) loci markers. The observed RFLP allele segregations in an F2 progeny of C. arabica conformed to disomic inheritance as expected, with regular bivalent pairing of homologous chromosomes in the F1 hybrid. In contrast, RFLP loci followed tetrasomic inheritance in the arabusta interspecific hybrid, althoughbivalents have been reported to predominate greatly at meiosis in its hybrid. These results suggest that homologous chromosomes do not pair in C. arabica, not as a consequence of structural differentiation, but because of the functioning of pairing regulating factors. Moreover, the arabusta hybrid seems to offer the possibility of gene exchange between the homologous genomes.
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2000
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Subjects: | COFFEA ARABICA, COFFEA CANEPHORA, COFFEA, HERENCIA (ECONOMIA), HIBRIDACION INTERESPECIFICA, APAREAMIENTO CROMOSOMICO, MEIOSIS, RFLP, MARCADORES GENETICOS, HIBRIDOS, PLANTAS ESTIMULANTES, BIOTECNOLOGIA, |
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KOHA-OAI-BVE:893352020-02-03T21:57:17ZSingle-locus inheritance in the allotetraploid Coffea arabica L. and interspecific hybrid C. arabica X C. canephora 85180 Lashermes, P. 102496 Paczek, V. 125624 Trouslot, P. 58486 Combes, M.C. 59669 Couturon, E. 56635 Charrier, A. 2000Molecular cytogenetic analysis has indicated that Coffea arabica is an amphidiploid formed from the hybridization between two closely related diploid progenitor species, C. canephora and C. eugenioides. This study was conducted to determine the modeof inheritance in C. arabica and in a tetraploid interspecific hybrid (arabusta) between C. arabica and C. canephora, as revealed by segregation analyses of restriction fragment length polymorphism (RFLP) loci markers. The observed RFLP allele segregations in an F2 progeny of C. arabica conformed to disomic inheritance as expected, with regular bivalent pairing of homologous chromosomes in the F1 hybrid. In contrast, RFLP loci followed tetrasomic inheritance in the arabusta interspecific hybrid, althoughbivalents have been reported to predominate greatly at meiosis in its hybrid. These results suggest that homologous chromosomes do not pair in C. arabica, not as a consequence of structural differentiation, but because of the functioning of pairing regulating factors. Moreover, the arabusta hybrid seems to offer the possibility of gene exchange between the homologous genomes.Molecular cytogenetic analysis has indicated that Coffea arabica is an amphidiploid formed from the hybridization between two closely related diploid progenitor species, C. canephora and C. eugenioides. This study was conducted to determine the modeof inheritance in C. arabica and in a tetraploid interspecific hybrid (arabusta) between C. arabica and C. canephora, as revealed by segregation analyses of restriction fragment length polymorphism (RFLP) loci markers. The observed RFLP allele segregations in an F2 progeny of C. arabica conformed to disomic inheritance as expected, with regular bivalent pairing of homologous chromosomes in the F1 hybrid. In contrast, RFLP loci followed tetrasomic inheritance in the arabusta interspecific hybrid, althoughbivalents have been reported to predominate greatly at meiosis in its hybrid. These results suggest that homologous chromosomes do not pair in C. arabica, not as a consequence of structural differentiation, but because of the functioning of pairing regulating factors. Moreover, the arabusta hybrid seems to offer the possibility of gene exchange between the homologous genomes.COFFEA ARABICACOFFEA CANEPHORACOFFEAHERENCIA (ECONOMIA)HIBRIDACION INTERESPECIFICAAPAREAMIENTO CROMOSOMICOMEIOSISRFLPMARCADORES GENETICOSHIBRIDOSPLANTAS ESTIMULANTESBIOTECNOLOGIAJournal of Heredity (RU) |
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COFFEA ARABICA COFFEA CANEPHORA COFFEA HERENCIA (ECONOMIA) HIBRIDACION INTERESPECIFICA APAREAMIENTO CROMOSOMICO MEIOSIS RFLP MARCADORES GENETICOS HIBRIDOS PLANTAS ESTIMULANTES BIOTECNOLOGIA COFFEA ARABICA COFFEA CANEPHORA COFFEA HERENCIA (ECONOMIA) HIBRIDACION INTERESPECIFICA APAREAMIENTO CROMOSOMICO MEIOSIS RFLP MARCADORES GENETICOS HIBRIDOS PLANTAS ESTIMULANTES BIOTECNOLOGIA |
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COFFEA ARABICA COFFEA CANEPHORA COFFEA HERENCIA (ECONOMIA) HIBRIDACION INTERESPECIFICA APAREAMIENTO CROMOSOMICO MEIOSIS RFLP MARCADORES GENETICOS HIBRIDOS PLANTAS ESTIMULANTES BIOTECNOLOGIA COFFEA ARABICA COFFEA CANEPHORA COFFEA HERENCIA (ECONOMIA) HIBRIDACION INTERESPECIFICA APAREAMIENTO CROMOSOMICO MEIOSIS RFLP MARCADORES GENETICOS HIBRIDOS PLANTAS ESTIMULANTES BIOTECNOLOGIA 85180 Lashermes, P. 102496 Paczek, V. 125624 Trouslot, P. 58486 Combes, M.C. 59669 Couturon, E. 56635 Charrier, A. Single-locus inheritance in the allotetraploid Coffea arabica L. and interspecific hybrid C. arabica X C. canephora |
description |
Molecular cytogenetic analysis has indicated that Coffea arabica is an amphidiploid formed from the hybridization between two closely related diploid progenitor species, C. canephora and C. eugenioides. This study was conducted to determine the modeof inheritance in C. arabica and in a tetraploid interspecific hybrid (arabusta) between C. arabica and C. canephora, as revealed by segregation analyses of restriction fragment length polymorphism (RFLP) loci markers. The observed RFLP allele segregations in an F2 progeny of C. arabica conformed to disomic inheritance as expected, with regular bivalent pairing of homologous chromosomes in the F1 hybrid. In contrast, RFLP loci followed tetrasomic inheritance in the arabusta interspecific hybrid, althoughbivalents have been reported to predominate greatly at meiosis in its hybrid. These results suggest that homologous chromosomes do not pair in C. arabica, not as a consequence of structural differentiation, but because of the functioning of pairing regulating factors. Moreover, the arabusta hybrid seems to offer the possibility of gene exchange between the homologous genomes. |
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topic_facet |
COFFEA ARABICA COFFEA CANEPHORA COFFEA HERENCIA (ECONOMIA) HIBRIDACION INTERESPECIFICA APAREAMIENTO CROMOSOMICO MEIOSIS RFLP MARCADORES GENETICOS HIBRIDOS PLANTAS ESTIMULANTES BIOTECNOLOGIA |
author |
85180 Lashermes, P. 102496 Paczek, V. 125624 Trouslot, P. 58486 Combes, M.C. 59669 Couturon, E. 56635 Charrier, A. |
author_facet |
85180 Lashermes, P. 102496 Paczek, V. 125624 Trouslot, P. 58486 Combes, M.C. 59669 Couturon, E. 56635 Charrier, A. |
author_sort |
85180 Lashermes, P. |
title |
Single-locus inheritance in the allotetraploid Coffea arabica L. and interspecific hybrid C. arabica X C. canephora |
title_short |
Single-locus inheritance in the allotetraploid Coffea arabica L. and interspecific hybrid C. arabica X C. canephora |
title_full |
Single-locus inheritance in the allotetraploid Coffea arabica L. and interspecific hybrid C. arabica X C. canephora |
title_fullStr |
Single-locus inheritance in the allotetraploid Coffea arabica L. and interspecific hybrid C. arabica X C. canephora |
title_full_unstemmed |
Single-locus inheritance in the allotetraploid Coffea arabica L. and interspecific hybrid C. arabica X C. canephora |
title_sort |
single-locus inheritance in the allotetraploid coffea arabica l. and interspecific hybrid c. arabica x c. canephora |
publishDate |
2000 |
work_keys_str_mv |
AT 85180lashermesp singlelocusinheritanceintheallotetraploidcoffeaarabicalandinterspecifichybridcarabicaxccanephora AT 102496paczekv singlelocusinheritanceintheallotetraploidcoffeaarabicalandinterspecifichybridcarabicaxccanephora AT 125624trouslotp singlelocusinheritanceintheallotetraploidcoffeaarabicalandinterspecifichybridcarabicaxccanephora AT 58486combesmc singlelocusinheritanceintheallotetraploidcoffeaarabicalandinterspecifichybridcarabicaxccanephora AT 59669couturone singlelocusinheritanceintheallotetraploidcoffeaarabicalandinterspecifichybridcarabicaxccanephora AT 56635charriera singlelocusinheritanceintheallotetraploidcoffeaarabicalandinterspecifichybridcarabicaxccanephora |
_version_ |
1756059941548851200 |