Results 71 to 80 of about 144,774 (218)
Estimating Effective Number of Breeders Under the Heterozygote‐Excess Equilibrium
Molecular Ecology Resources, Volume 26, Issue 2, February 2026.ABSTRACT Estimating the effective number of breeders per reproductive cycle or cohort (Nb$$ {N}_b $$) can contribute to understanding the viability of wild populations. However, previous Nb$$ {N}_b $$ estimators based on heterozygote‐excess assume that parental genotypes are in accordance with Hardy–Weinberg equilibrium (HWE), and can only be applied ...
Bing Yang +11 more
wiley +1 more source
High temperature-induced production of unreduced pollen and its cytological effects in Populus
Scientific Reports, 2017 Temperature change is of potential to trigger the formation of unreduced gametes. In this study, we showed that short periods of high temperature treatment can induce the production of 2n pollen in Populus pseudo-simonii Kitag.
Jun Wang +3 more
doaj +1 more source
Mutation and selection in a large population [PDF]
, 2004 In this paper we study a large, but finite population, in which mutation and selection occur at a single genetic locus in a diploid organism. We provide theoretical results for the equilibrium allele frequencies, their variances and covariances and their
Cruikshank, A. +2 more
core +1 more source
Molecular Ecology, Volume 35, Issue 3, February 2026.ABSTRACT Understanding gene flow between ploidy levels in polyploid complexes is essential for species delimitation and conservation. This study explores evolutionary dynamics in the polyploid complex Thymus sect. Mastichina (Lamiaceae), comprising three taxa: T. mastichina subsp. mastichina, T. mastichina subsp.
Francisco José García‐Cárdenas +7 more
wiley +1 more source
Efficient haploid production on 'Wilking' mandarin by induced gynogenesis [PDF]
, 2015 Seedlessness is a major criterion for the citrus fresh fruit market. Therefore, triploid breeding appears very promising for the selection of new citrus cultivars.
Froelicher, Yann +4 more
core
The frequency and importance of polyploidy in tropical rainforest tree radiations
New Phytologist, Volume 249, Issue 4, Page 2103-2114, February 2026.Summary The presence of more than two copies of the genome in an organism, termed ‘polyploidy’, is a crucial force in plant evolution, generating genetic, phenotypic and ecological diversity. [Correction added on 22 January 2026, after first online publication: the preceding sentence has been corrected.] The Amazonian tree flora is the most species ...
Rowan J. Schley +9 more
wiley +1 more source
Вавиловский журнал генетики и селекции, 2019 Chromosomal rearrangements can lead to the formation of new stable karyotypes, nevertheless changing the architectonics of the nucleus. The differences in locations might promote Robertsonian (Rb) translocations and encourage meiotic drive in favour of ...
V. G. Tambovtseva +5 more
doaj +1 more source
Caryologia, 2020 Cytomictic behaviour of chromosomes among pollen mother cells was observed in mutagenic studies in cluster bean (Cyamopsis tetragonoloba (L.) Taub.). The study of pollen mother cells (PMC) revealed various chromosomal aberrations among which cytomixis ...
Girjesh Kumar, Shefali Singh
doaj +1 more source
Triploid seedless mandarin breeding in France : S02O02 [PDF]
, 2012 Small citrus is an increasing component of the world citrus industry. New high quality, parthenocarpic, sterile mandarin varieties will play a pivotal role for its sustainable development.
Bouffin, Jean +3 more
core
Polyploid lineages in the genus Porphyra [PDF]
, 2018 Whole genome duplication is now accepted as an important evolutionary force, but the genetic factors and the life history implications affecting the existence and abundance of polyploid lineages within species are still poorly known.
Loureiro, João +3 more
core +1 more source