Evidence for nuclear-cytoplasmic incompatibility between Allium fistulosum and A. cepa

@article{UlloaG2004EvidenceFN,
  title={Evidence for nuclear-cytoplasmic incompatibility between Allium fistulosum and A. cepa},
  author={M. Ulloa-G and Joe N. Corgan and Max P. Dunford},
  journal={Theoretical and Applied Genetics},
  year={2004},
  volume={90},
  pages={746-754}
}
An F2 population (Allium fistulosum x A. cepa) of 20plants, 10 BC1,[(A. fistulosum x A. cepa) x A. cepa], and 50 BC2 plants, [(A. fistulosum x A. cepa) x A. cepa] x A. cepa were studied cytogenetically and characterized for four isozyme alleles plus various morphological characteristics. All of the progenies were in A. fistulosum (the bunching onion) cytoplasm. In the F2 population we observed non-random chromosomal and allelic segregation, suppression of bulb onion allelic expression, and… 
Morphological, Cytological and Embryological Characterization of F1 A. cepa × A. roylei Hybrids
TLDR
Most of the morphological characters of the F1 hybrids were intermediate as compared to those of both parental accessions, and abnormalities were observed in meiosis as well as at the tetrad stage.
Cytological Evaluations of Advanced Generations of Interspecific Hybrids between Allium cepa and Allium fistulosum Showing Resistance to Stemphylium vesicarium
TLDR
Recombinant chromosomes between A. cepa and A. fistulosum were identified, revealing that introgression of disease resistances to bulb onion should be possible.
Chromosome and cytoplasm analyses of somatic hybrids between onion (Allium cepa L.) and garlic (A. sativum L.)
TLDR
PCR-RFLP analyses of chloroplast and mitochondrial DNAs of both lines showed that these were identical to the onion parent, and genomic in situhybridization successfully revealed the chromosome constitution of the two lines.
Production of novel alloplasmic male sterile lines in Allium cepa harbouring the cytoplasm from Allium roylei
TLDR
The results of this study revealed that an exploitation of A. roylei cy toplasm would be useful for the development of a novel cytoplasmic male sterility line in Allium.
Screening and incorporation of rust resistance from Allium cepa into bunching onion (Allium fistulosum) via alien chromosome addition.
TLDR
In contrast to the high resistance of shallot, the addition line FF+1A+5A showed reproducibly high levels of rust resistance, suggesting that the genes related to rust resistance could be located on shallot chromosome 1A.
Central cell nuclear-cytoplasmic incongruity:a mechanism for segregation distortion in advanced backcross and selfed generations of (Allium cepa L. × Allium fistulosum L.) × A. cepa interspecific hybrid derivatives
TLDR
The central cell nuclear-cytoplasmic incongruity hypothesis is presented as an explanation for an anomaly observed in germination and establishment and isozyme segregation patterns in Allium cepa × A. fistulosum F.<sub>2</sub>BC<sub>3</sub] populations generated in an introgression-breeding program.
Genome Dominance in Allium Hybrids (A. cepa × A. roylei)
TLDR
Screening of the backcross generation A. cepa × (A. roylei) revealed that this shift does not appear during male meiosis, which is perfectly regular and results with balanced segregation of parental chromosomes, which are equally transmitted to the next generation, indicating that female meiotic drive is the key factor underlying A. roylesi genome dominance.
Meiotic Irregularities in Interspecific Crosses Within Edible Alliums
TLDR
The economically most important edible alliums are onion, Japanese bunching onion, leek, and garlic, and these species are mostly used as condiments, but also have medicinal value.
Hybridization and Molecular Characterization of F1 Allium Cepa × Allium Roylei Plants
TLDR
This work made interspecific crosses to facilitate the introgression of desirable traits of Allium roylei into the Allium cepa genome and found that 97.6% of the regenerants were interspecific F1 Alliumcepa × A. roylesi hybrids.
両性生殖性ニラ(Allium ramosum L.)二倍体とA . scabriscapum Bois. et Ky.との種間雑種
TLDR
Results confirmed that A. scabriscapum was useful for Chinese chive breeding as a secondary gene pool and used the wild species as a genetic resource forChinese chive cross breeding.
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TLDR
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