Results 31 to 40 of about 2,419 (214)

Introgression of the Aegilops speltoides Su1-Ph1 Suppressor into Wheat

open access: yesFrontiers in Plant Science, 2017
Meiotic pairing between homoeologous chromosomes in polyploid wheat is inhibited by the Ph1 locus on the long arm of chromosome 5 in the B genome.
Hao Li   +5 more
doaj   +1 more source

Development of Deletion Lines for Chromosome 3D of Bread Wheat

open access: yesFrontiers in Plant Science, 2020
The identification of genes of agronomic interest in bread wheat (Triticum aestivum L.) is hampered by its allopolyploid nature (2n = 6x = 42; AABBDD) and its very large genome, which is largely covered by transposable elements.
Radim Svačina   +7 more
doaj   +1 more source

Homoeologous Chromosome Pairing and Alien Introgression in Backcrossing Progenies Derived from Hybrids Solanum tuberosum (+) Mexican 2x (1 EBN) B-Genome Potato Species

open access: yesAgronomy, 2023
We applied a genomic in situ hybridization (GISH) to analyze the genomic constitution of and meiotic pairing in interspecific somatic hybrids, and in a wide subset of backcrossing derivatives (BC1–BC5), from three interspecific combinations involving the
Tatjana Gavrilenko   +4 more
doaj   +1 more source

Homoeologous Chromosomes From Two Hordeum Species Can Recognize and Associate During Meiosis in Wheat in the Presence of the Ph1 Locus

open access: yesFrontiers in Plant Science, 2018
Understanding the system of a basic eukaryotic cellular mechanism like meiosis is of fundamental importance in plant biology. Moreover, it is also of great strategic interest in plant breeding since unzipping the mechanism of chromosome specificity ...
María C. Calderón   +3 more
doaj   +1 more source

Synteny analysis in Rosids with a walnut physical map reveals slow genome evolution in long-lived woody perennials. [PDF]

open access: yes, 2015
BackgroundMutations often accompany DNA replication. Since there may be fewer cell cycles per year in the germlines of long-lived than short-lived angiosperms, the genomes of long-lived angiosperms may be diverging more slowly than those of short-lived ...
Aradhya, Mallikarjuna   +9 more
core   +2 more sources

Wheat mutants permitting homoeologous meiotic chromosome pairing

open access: yesGenetical Research, 1971
SUMMARYPlants of Triticum aestivum (2n = 6x = 42) ditelocentric 5BL were treated with EMS in order to produce mutations in the 5B system by which meiotic pairing between homoeologous chromosomes is normally prevented. To check for the occurrence of mutation T.
A. M. Wall, Ralph Riley, Victor Chapman
openaire   +1 more source

Assessing the Potential of Using the Langdon 5D(5B) Substitution Line for the Introgression of Aegilops tauschii Into Durum Wheat

open access: yesFrontiers in Plant Science, 2022
Aegilops tauschii, the D-genome donor of hexaploid wheat, provides a source of genetic variation that could be used for tetraploid (durum) wheat improvement.
Manel Othmeni   +5 more
doaj   +1 more source

A Duplicated Copy of the Meiotic Gene ZIP4 Preserves up to 50% Pollen Viability and Grain Number in Polyploid Wheat

open access: yesBiology, 2021
Although most flowering plants are polyploid, little is known of how the meiotic process evolves after polyploidisation to stabilise and preserve fertility.
Abdul Kader Alabdullah   +2 more
doaj   +1 more source

Reducing the size of an alien segment carrying leaf rust and stripe rust resistance in wheat

open access: yesBMC Plant Biology, 2020
Background Leaf and stripe rusts are two major wheat diseases, causing significant yield losses. The preferred way for protecting wheat from rust pathogens is by introgression of rust resistance traits from wheat-related wild species.
Sofia Khazan   +6 more
doaj   +1 more source

ASYNAPSIS 1 ensures crossover fidelity in polyploid wheat by promoting homologous recombination and suppressing non-homologous recombination

open access: yesFrontiers in Plant Science, 2023
During meiosis, the chromosome axes and synaptonemal complex mediate chromosome pairing and homologous recombination to maintain genomic stability and accurate chromosome segregation.
Chiara Di Dio   +3 more
doaj   +1 more source

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