ArticleAnnals of botany2012
Cytogenetic evidence of mixed disomic and polysomic inheritance in an allotetraploid (AABB) Musa genotype.
Article in Annals of botany, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.
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12 citing papers in PubMed, 25 citations in OpenAlex.
- A locus-dependent mixed inheritance in the segmental allohexaploid sweetpotato (Frontiers in plant science · 2024Article
- Meiotic Behaviors of Allotetraploid Citrus Drive the Interspecific Recombination Landscape, the Genetic Structures, and Traits Inheritance in Tetrazyg Progenies Aiming to Select New Rootstocks.Plants (Basel, Switzerland) · 2023Article
- A Novel Banana Mutant "Frontiers in plant science · 2021Article
- Male and female inheritance patterns in tetraploid 'Moncada' mandarin.Plant cell reports · 2020Article
- Preferential Disomic Segregation andFrontiers in plant science · 2020Article
- Cytogenetic and molecular genotyping in the allotetraploid Festuca pratensis × Lolium perenne hybrids.BMC genomics · 2019Article
- Recombination and Large Structural Variations Shape Interspecific Edible Bananas Genomes.Molecular biology and evolution · 2019Article
- Origin of C. latifolia and C. aurantiifolia triploid limes: the preferential disomic inheritance of doubled-diploid 'Mexican' lime is consistent with an interploid hybridization hypothesis.Annals of botany · 2018Article
- Preferential Homologous Chromosome Pairing in a Tetraploid Intergeneric Somatic Hybrid (Frontiers in plant science · 2018Article
- How endogenous plant pararetroviruses shed light on Musa evolution.Annals of botany · 2016Article
- Evidence of Genomic Exchanges between Homeologous Chromosomes in a Cross of Peanut with Newly Synthetized Allotetraploid Hybrids.Frontiers in plant science · 2016Article
- Genetic diversity and population structure of Musa accessions in ex situ conservation.BMC plant biology · 2013Article
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Authors and funding
6 authors at 2 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
BACKGROUND AND
aimsEdible bananas originated mainly from two wild species, Musa acuminata Colla (AA) and Musa balbisiana Colla (BB), and triploid cultivars with an AAA, AAB or ABB genome are the most widely used. In the present study, chromosome pairing affinities are investigated in a sterile AB Indian variety and in its fertile colchicine-induced allotetraploid (AABB) derivative to determine the inheritance pattern of the tetraploid genotype. The potential implications of interspecific recombination and chromosomal composition of diploid gametes for Musa improvement are presented.
methodsThe pairing of different chromosome sets at diploid and tetraploid levels was investigated through a combination of conventional cytogenetic and genomic in-situ hybridization (GISH) analyses of meiotic chromosomes, leading to a likelihood model of the pairing behaviour. GISH analysis of mitotic chromosomes was also conducted to reveal the chromosome constitution of hybrids derived from crosses involving the allotetraploid genotype. KEY
resultsAnalysis of chromosome associations at both ploidy levels suggested that the newly formed allotetraploid behaves as a 'segmental allotetraploid' with three chromosome sets in a tetrasomic pattern, three sets in a likely disomic pattern and the five remaining sets in an intermediate pattern. Balanced and unbalanced diploid gametes were detected in progenies, with the chromosome constitution appearing to be more homogenous in pollen than in ovules.
conclusionsColchicine-induced allotetraploids in Musa provide access to the genetic background of natural AB varieties. The segmental inheritance pattern exhibited by the AABB allotetraploid genotype implies chromosome exchanges between M. acuminata and M. balbisiana species and opens new horizons for reciprocal transfer of valuable alleles.
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