Asynapsis and unreduced gamete formation in a Trifolium interspecific hybrid [PDF]
BMC Plant Biology, 2022 Background Unreduced gametes, a driving force in the widespread polyploidization and speciation of flowering plants, occur relatively frequently in interspecific or intergeneric hybrids. Studies of the mechanisms leading to 2n gamete formation, mainly in
Helal A. Ansari +3 more
doaj +5 more sources
Unzipped chromosome-level genomes reveal allopolyploid nematode origin pattern as unreduced gamete hybridization [PDF]
Nature Communications, 2023 The formation and consequences of polyploidization in animals with clonal reproduction remain largely unknown. Clade I root-knot nematodes (RKNs), characterized by parthenogenesis and allopolyploidy, show a widespread geographical distribution and ...
Dadong Dai +13 more
doaj +4 more sources
Unreduced megagametophyte production in lemon occurs via three meiotic mechanisms, predominantly second-division restitution [PDF]
Frontiers in Plant Science, 2017 Unreduced (2n) gametes have played a pivotal role in polyploid plant evolution and are useful for sexual polyploid breeding in various species, particularly for developing new seedless citrus varieties.
Houssem Rouiss +5 more
core +7 more sources
Exploiting Unreduced Gametes for Improving Ornamental Plants
Frontiers in Plant Science, 2022 The formation of gametes with somatic chromosome number or unreduced gametes (2n gametes) is an important process involved in the origin of polyploid plants in nature. Unreduced gametes are the result of meiotic mutations occurring during micro- and mega-
Li Xie +4 more
doaj +3 more sources
Triploid cultivars of Cymbidium act as a bridge in the formation of polyploid plants [PDF]
Frontiers in Plant Science, 2022 Triploid is considered a reproductive barrier and also a bridge in the formation of polyploids. However, few reports are available in Cymbidium. In this study, diploid ‘Xiaofeng’, sexual triploid ‘Yuchan’ and ‘Huanghe’ of Cymbidium were used to evaluate ...
Man-Man Li +8 more
doaj +2 more sources
Shared pedigree relationships and transmission of unreduced gametes in cultivated banana. [PDF]
Ann Bot, 2023 Abstract Background and Aims Cultivated bananas resulted from inter(sub)specific hybridizations involving Musa species and subspecies (M. acuminata subspecies, M. schizocarpa, M. balbisiana) and the subsequent selection, centuries ago, of hybrids with parthenocarpic, seedless fruits.
Martin G +10 more
europepmc +6 more sources
Unreduced Male Gamete Formation in Cymbidium and Its Use for Developing Sexual Polyploid Cultivars [PDF]
Frontiers in Plant Science, 2020 Polyploidy plays an important role in crop improvement. Polyploid plants, particularly those produced through unreduced gametes (2n gametes), show increased organ size, improved buffering capacity for deleterious mutations, and enhanced heterozygosity ...
Rui-Zhen Zeng +11 more
doaj +3 more sources
The mechanism of tetraploidization in tree peony, and its implications for speciation and evolution of genus Paeonia L. [PDF]
Frontiers in Plant ScienceIntroductionPolyploidization is not only an important driving force for plant speciation and evolution, but also an effective approach for plant domestication and improvement. Polyploid taxa are quite common in Paeonia section Paeonia (herbaceous peonies)
Yuan Zhong +7 more
doaj +2 more sources
Chromosome stability of synthetic Triticum turgidum–Aegilops umbellulata hybrids [PDF]
BMC Plant BiologyBackground Unreduced gamete formation during meiosis plays a critical role in natural polyploidization. However, the unreduced gamete formation mechanisms in Triticum turgidum–Aegilops umbellulata triploid F1 hybrid crosses and the chromsome numbers and ...
Zhongping Song +6 more
doaj +2 more sources
Genetic fine-mapping of DIPLOSPOROUS in Taraxacum (dandelion; Asteraceae) indicates a duplicated DIP-gene [PDF]
BMC Plant Biology, 2010 Background DIPLOSPOROUS (DIP) is the locus for diplospory in Taraxacum, associated to unreduced female gamete formation in apomicts. Apomicts reproduce clonally through seeds, including apomeiosis, parthenogenesis, and autonomous or pseudogamous ...
Kitty Vijverberg +3 more
core +5 more sources