Abstract
The genomes of four different wild Musa species are involved in cultivated bananas : the A, B, S and T genomes related to M. acuminata, M. balbisiana, M. schizocarpa and the Australimusa species, respectively. Most cultivated clones are triploid or diploid. They have been classified into genomic groups according to chromosome numbers and morphological traits. The main groups are AA, AAA, AAB, ABB, AS or AT. Flow cytometry reveals that the sizes of A, B, S and T genomes are significantly different. M. balbisiana has the smallest genome (1.03 pg/2C, 2n=2x=22), followed by M. acuminata (1.11 pg/2C, 2n=2x=22) and M. schizocarpa (1.18 pg/2C, 2n=2x =22). The highest value was obtained for the Australimusa species M. textilis (1.27 pg/2C, 2n=2x=20). Genome size can thus be used to determine the species involved in interspecific diploid clones. Genomic in situ hybridization has been developed to characterize the specific origin of the chromosomes in interspecific clones. This technique enables us to differentiate the chromosomes from the genomes A, B, S and T and is being used to determine the exact genome structure of cultivated clones and synthetic hybrids. (Texte intégral)
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Claims 7
Claim · model-written summary
A, B, S and T genomes differed significantly in size.
Not reportedTaxon
Verbatim
e0“Flow cytometry reveals that the sizes of A, B, S and T genomes are significantly different.”
Claim · model-written summary
M. balbisiana had the smallest genome at 1.03 pg/2C.
- Taxon
- M. balbisiana
Musa balbisianae0 - Outcome
- genomee0
- Direction
- smalleste0
- Value
- 1.03 pg/2Ce0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“M. balbisiana has the smallest genome (1.03 pg/2C, 2n=2x=22)”
Claim · model-written summary
M. acuminata genome size was 1.11 pg/2C.
- Taxon
- M. acuminata
Musa acuminatae0 - Outcome
- M. acuminatae0
- Value
- 1.11 pg/2Ce0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“M. acuminata (1.11 pg/2C, 2n=2x=22)”
Claim · model-written summary
M. schizocarpa genome size was 1.18 pg/2C.
- Taxon
- M. schizocarpaMusa schizocarpae0
- Outcome
- M. schizocarpae0
- Value
- 1.18 pg/2Ce0
Verbatim
e0“M. schizocarpa (1.18 pg/2C, 2n=2x =22)”
Claim · model-written summary
M. textilis had the highest genome size at 1.27 pg/2C.
- Taxon
- M. textilis
Musa textilise0 - Outcome
- highest valuee0
- Direction
- higheste0
- Value
- 1.27 pg/2Ce0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest value was obtained for the Australimusa species M. textilis (1.27 pg/2C, 2n=2x=20).”
Claim · model-written summary
Genome size distinguished species contributions to interspecific diploid clones.
- Outcome
- determine the species involved in interspecific diploid clonese0
- Comparator
- interspecific diploid clonese0
Not reportedTaxon
Verbatim
e0“Genome size can thus be used to determine the species involved in interspecific diploid clones.”
Claim · model-written summary
Genomic in situ hybridization differentiated chromosomes from the A, B, S and T genomes.
- Outcome
- differentiate the chromosomes from the genomes A, B, S and Te0
- Comparator
- cultivated clones and synthetic hybridse0
Not reportedTaxon
Verbatim
e0“This technique enables us to differentiate the chromosomes from the genomes A, B, S and T and is being used to determine the exact genome structure of cultivated clones and synthetic hybrids.”