INVESTIGADORES
CONFALONIERI Viviana Andrea
artículos
Título:
Genomic organization and diversification of maize and its allied species: evidences from classical and molecular cytogenetics.
Autor/es:
POGGIO, L.; GONZÁLEZ, G.; CONFALONIERI, V.A.; COMAS, C.; NARANJO, C.A.
Revista:
Cytogenetic Genome Research (ex Cytogenetics and Cell Genetics)
Editorial:
Karger
Referencias:
Año: 2005 vol. 109 p. 259 - 267
Resumen:
The present review summarizes our classical and
molecular cytogenetic investigations in the genus Zea. The
results obtained from the meiotic behavior analysis of Zea species
and hybrids, confirm the amphiploid nature of all species
in the genus, with a basic number of x = 5 chromosomes. All
species with 2n = 20 are diploidized allotetraploids, whereas
and hybrids, confirm the amphiploid nature of all species
in the genus, with a basic number of x = 5 chromosomes. All
species with 2n = 20 are diploidized allotetraploids, whereas
results obtained from the meiotic behavior analysis of Zea species
and hybrids, confirm the amphiploid nature of all species
in the genus, with a basic number of x = 5 chromosomes. All
species with 2n = 20 are diploidized allotetraploids, whereas
and hybrids, confirm the amphiploid nature of all species
in the genus, with a basic number of x = 5 chromosomes. All
species with 2n = 20 are diploidized allotetraploids, whereas
Zea. The
results obtained from the meiotic behavior analysis of Zea species
and hybrids, confirm the amphiploid nature of all species
in the genus, with a basic number of x = 5 chromosomes. All
species with 2n = 20 are diploidized allotetraploids, whereas
and hybrids, confirm the amphiploid nature of all species
in the genus, with a basic number of x = 5 chromosomes. All
species with 2n = 20 are diploidized allotetraploids, whereas
Zea species
and hybrids, confirm the amphiploid nature of all species
in the genus, with a basic number of x = 5 chromosomes. All
species with 2n = 20 are diploidized allotetraploids, whereas
Z. perennis (2n = 40) is an allooctoploid with four genomes
somewhat divergent from one another. These analyses also
revealed the existence of postzygotic reproductive isolation
among Zea species. Our studies using genomic in situ hybridization
(GISH) provide evidence about the evolutionary relationships
among maize and its allied species, and reveal
remarkable genomic divergences. Particularly, knob sequences
were not completely shared between taxa previously considered
to be closely related. Our data strongly suggest that the teosinte
(GISH) provide evidence about the evolutionary relationships
among maize and its allied species, and reveal
remarkable genomic divergences. Particularly, knob sequences
were not completely shared between taxa previously considered
to be closely related. Our data strongly suggest that the teosinte
somewhat divergent from one another. These analyses also
revealed the existence of postzygotic reproductive isolation
among Zea species. Our studies using genomic in situ hybridization
(GISH) provide evidence about the evolutionary relationships
among maize and its allied species, and reveal
remarkable genomic divergences. Particularly, knob sequences
were not completely shared between taxa previously considered
to be closely related. Our data strongly suggest that the teosinte
(GISH) provide evidence about the evolutionary relationships
among maize and its allied species, and reveal
remarkable genomic divergences. Particularly, knob sequences
were not completely shared between taxa previously considered
to be closely related. Our data strongly suggest that the teosinte
(2n = 40) is an allooctoploid with four genomes
somewhat divergent from one another. These analyses also
revealed the existence of postzygotic reproductive isolation
among Zea species. Our studies using genomic in situ hybridization
(GISH) provide evidence about the evolutionary relationships
among maize and its allied species, and reveal
remarkable genomic divergences. Particularly, knob sequences
were not completely shared between taxa previously considered
to be closely related. Our data strongly suggest that the teosinte
(GISH) provide evidence about the evolutionary relationships
among maize and its allied species, and reveal
remarkable genomic divergences. Particularly, knob sequences
were not completely shared between taxa previously considered
to be closely related. Our data strongly suggest that the teosinte
Zea species. Our studies using genomic in situ hybridization
(GISH) provide evidence about the evolutionary relationships
among maize and its allied species, and reveal
remarkable genomic divergences. Particularly, knob sequences
were not completely shared between taxa previously considered
to be closely related. Our data strongly suggest that the teosinte
Z. mays parviglumis is not the only progenitor of cultivated
maize. Introgression of Tripsacum into cultivated maize cannot
be discarded
be discarded
maize. Introgression of Tripsacum into cultivated maize cannot
be discarded
be discarded
is not the only progenitor of cultivated
maize. Introgression of Tripsacum into cultivated maize cannot
be discarded
be discarded
Tripsacum into cultivated maize cannot
be discarded