Results 71 to 80 of about 2,997 (195)
Plant Species Biology, Volume 41, Issue 1, January 2026.Upon prolonged waterlogging, a Costus speciosus plant developed bulbils at stem node. Karyotype analysis, nucleolar staining, and anatomical study revealed its triploid status and developmental aspects. Prevalence of tetraploid, abundance, and unique reproductive fecundity of the triploid, indicates its determinant role in coexistence of the multiple ...
Surochita Basu +3 more
wiley +1 more source
Introgression in interspecific hybrids of lily [PDF]
, 2002 In order to introduce new desirable characters into the cultivar assortment of lily a range of interspecific crossing barriers has to be overcome. By using various pollination and embryo rescue techniques pre- and postfertilization barriers were overcome
Lim, K.B. +2 more
core +2 more sources
Molecular Ecology, Volume 35, Issue 2, January 2026.ABSTRACT Parthenogenesis, or all‐female clonal reproduction, is rare among vertebrates. This is often attributed to the selective disadvantages of assumed reduction of genetic diversity in the absence of sex. However, parthenogenetic vertebrates have highly complex evolutionary histories, with most arising through hybridisation and many being polyploid.
Kate E. O'Hara +4 more
wiley +1 more source
The second highest chromosome count among vertebrates is observed in cultured sturgeon and is associated with genome plasticity [PDF]
, 2016 Additional file 1: Table S1. Genotyping results with highlighted private dam and sire microsatellite alleles observed at all analysed loci for parental individuals, and for pentaploid (5n) and heptaploid (7n) full ...
Dmytro Bytyutskyy +4 more
core +4 more sources
G3: Genes, Genomes, Genetics, 2017 Wild Helianthus species are a valuable genetic resource for the improvement of cultivated sunflower. We report the discovery and characterization of a unique high frequency production of triploids when cultivated sunflower was pollinated by specific ...
Zhao Liu +6 more
doaj +1 more source
Genetic and karyotype divergence between parents affect clonality and sterility in hybrids
eLife, 2023 Asexual reproduction can be triggered by interspecific hybridization, but its emergence is supposedly rare, relying on exceptional combinations of suitable genomes.
Anatolie Marta +11 more
doaj +1 more source
Polyploid Arabidopsis species originated around recent glaciation maxima [PDF]
, 2018 Polyploidy may provide adaptive advantages and is considered to be important for evolution and speciation. Polyploidy events are found throughout the evolutionary history of plants, however they do not seem to be uniformly distributed along the time axis.
Hohmann, Nora +2 more
core +2 more sources
PLoS ONE, 2013 The complex process of allopolyploid speciation includes various mechanisms ranging from species crosses and hybrid genome doubling to genome alterations and the establishment of new allopolyploids as persisting natural entities.
Yoshihiro Matsuoka +6 more
doaj +1 more source
Targeted generation of polyploids in Hydrangea macrophylla through cross-based breeding
BMC Genetics, 2020 Background Up to now, diploid and triploid cultivars were reported for the ornamental crop Hydrangea macrophylla. Especially, the origin of triploids and their crossing behaviors are unknown, but the underlying mechanisms are highly relevant for breeding
Conny Tränkner +4 more
doaj +1 more source
Introgression of Leptosphaeria maculans Resistance From Hexaploid Brassica Into Brassica napus
Plant Pathology, Volume 75, Issue 1, January/February 2026.Blackleg resistance was introgressed from resistant hexaploid Brassica. Phenotyping and genotyping was conducted to determine the presence of known resistance genes. The absence of resistance following phenotyping and genotyping suggests that novel resistance may have been introgressed from hexaploid Brassica.
Keval Shah +7 more
wiley +1 more source