Results 41 to 50 of about 2,201 (178)

Cross‐ploidy hybridisation in Alpine woodrushes is associated with ecological additivity and scale‐dependent niche divergence

open access: yesNew Phytologist, EarlyView.
Genetic differentiation among the study species. Summary Hybridisation and whole‐genome duplication (WGD) are widespread in plants, yet their ecological consequences remain challenging to predict. In allopolyploids, where both processes coincide, ecological divergence is typically evaluated against a null hypothesis of ecological additivity.
Valentin Heimer   +2 more
wiley   +1 more source

Cytological techniques to analyze meiosis in Arabidopsis arenosa for investigating adaptation to polyploidy

open access: yesFrontiers in Plant Science, 2014
Arabidopsis arenosa is a close relative of the model plant Arabidopsis thaliana, and exists in nature as stable diploid and autotetraploid populations. Natural tetraploids have adapted to whole genome duplication and do not commonly show meiotic errors ...
James D Higgins   +3 more
doaj   +1 more source

Foliar Pectins and Physiology of Diploid and Autotetraploid Mango Genotypes under Water Stress

open access: yesPlants, 2023
The cultivation of mango in Mediterranean-type climates is challenged by the depletion of freshwater. Polyploids are alternative genotypes with potential greater water use efficiency, but field evaluations of the anatomy and physiology of conspecific ...
Andrés Fonollá   +2 more
doaj   +1 more source

HSP101‐encoding NEO‐TETRAPLOID RICE FERTILITY GENE 1 regulates tapetum development through interaction with SAPK2 in polyploid rice

open access: yesJournal of Integrative Plant Biology, Volume 68, Issue 7, Page 2316-2330, July 2026.
In neo‐tetraploid rice, the NTRF1–SAPK2 heat shock protein–kinase module coordinates abscisic acid signaling with reactive oxygen species homeostasis to ensure timely tapetal programmed cell death and subsequent pollen maturation, providing a resource for the genetic improvement of polyploid rice.
Lichong Cao   +7 more
wiley   +1 more source

Modeling Population Genetic Data in Autotetraploid Species [PDF]

open access: yesGenetics, 2006
Abstract Allozyme and PCR-based molecular markers have been widely used to investigate genetic diversity and population genetic structure in autotetraploid species. However, an empirical but inaccurate approach was often used to infer marker genotype from the pattern and intensity of gel bands.
Luo, Z. W.   +6 more
openaire   +3 more sources

Traversing the effects of ploidy changes in different Eragrostis curvula genotypes through high‐throughput RNA sequencing

open access: yesThe Plant Genome, Volume 19, Issue 2, June 2026.
Abstract Polyploidization has played a key role in plant genome evolution. Eragrostis curvula (Schrad.) Ness, a perennial forage grass species of the Poaceae family, is an excellent model for investigating genome duplication due to its natural variation in ploidy levels.
D. F. Santoro   +5 more
wiley   +1 more source

Ploidy variation on gene differential expression in cowpea

open access: yesCiência Rural
: This study investigated the differences in gene expression profiles of diploid and autotetraploid in cowpea, and provided theoretical basis for screening key genes of differential expression and ploidy breeding.
Xuewen Qiu   +7 more
doaj   +1 more source

Breaking Strength of Pedicel as an Index of Grain-Shattering Habit in Autotetraploid and Diploid Buckwheat (Fagopyrum esculentum Moench.) Cultivars

open access: yesPlant Production Science, 1999
The grain-shattering habit was compared among diploid and autotetraploid cultivars of common buckwheat (Fagopyrum esculentum Moench.). In the first experiment, one diploid and one autotetraploid cultivar were grown in the field, and the number of grains ...
Shinya Oba   +2 more
doaj   +1 more source

ZSL Orchestrates Synaptonemal Complex Assembly as a Central Region Scaffold to Ensure Synapsis Fidelity and Crossover Control in Polyploid Meiosis

open access: yesAdvanced Science, Volume 13, Issue 27, 13 May 2026.
A central molecular adaptor, ZSL, is identified that links transverse filaments ZYP1 to central element SCEP1/2 to drive synaptonemal complex assembly in Brassica napus. Loss of ZSL abolishes synaptonemal complex formation, disrupts meiotic chromosome segregation, and markedly increases crossovers, providing mechanistic insight into meiotic fidelity ...
Miaowei Geng   +16 more
wiley   +1 more source

Introgression of a Terminal Segment From Chromosome 3S of Festuca mairei Increases Drought Resistance of Lolium perenne

open access: yesFood and Energy Security, Volume 15, Issue 3, May/June 2026.
ABSTRACT Due to climate change, the requirement for increased resilience by grassland systems to onsets of ever‐increasing drought stresses makes the development of drought‐resistant forage crops a priority for future food and energy security. Novel ×Festulolium (Festuca × Lolium) cultivars offer unique opportunities to combine complementary traits ...
David Kopecký   +3 more
wiley   +1 more source

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