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Cytogenetics of structural rearrangements in Musa hybrids and cultivars

Code: 9781786769374
Fajarudin Ahmad, Indonesian Institute of Sciences (LIPI), Indonesia and Wageningen University & Research, The Netherlands; Peter M. Bourke and Henk Schouten, Wageningen University & Research, The Netherlands; Hugo Volkaert, Center for Agricultural Biotechnology – Kasetsart University, Thailand; Gert H. J. Kema, Wageningen University & Research, The Netherlands; and Hans de Jong, Kasetsart University, Thailand and Wageningen University & Research, The Netherlands

Chapter synopsis: Edible bananas are diploid or triploid Musa acuminata, or hybrids of M. acuminata x M. balbisi-ana, producing nutritious seedless fruit of different taste and structure. Breeding for high yield and host plant resistance to pathogens and pests as well as adaptation to abiotic stress of im-portant cultivars is challenging because of seedless and parthenocarpic fruit. In addition, cross-ings and selections of diploid cultivars and wild relatives are severely hampered by transloca-tions and inversions that are widespread in the M. acuminata populations. In this study we pre-sent an overview of cytogenetics, genetics and genomics research carried out to elucidate the meiotic chromosome behaviour in the hybrids and the mapping of genes, and to analyse the dif-ferent classes of DNA sequences in the banana genomes. Finally, we illustrate cytogenetic and linkage mapping of a diploid M. acuminata ssp. malaccensis using the diploid M. acuminata ‘Pa-hang’ as a genome reference and focus on the occurrence of structural rearrangements.

DOI: 10.19103/AS.2020.0070.01
Table of contents 1 Introduction 2 Pollen fertility 3 Flow-cytometry 4 Fluorescent in situ hybridization (FISH) 5 Use of repetitive sequences in banana research 6 Chromosomal detection of single-copy sequences 7 Molecular markers in linkage studies 8 Case study 9 Conclusion and future perspectives 10 Where to look for further information 11 References

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