ArticleTAG. Theoretical and applied genetics. Theoretische und angewandte Genetik2012
Alien genes introgression and development of alien monosomic addition lines from a threatened species, Allium roylei Stearn, to Allium cepa L.
Article in TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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1 citing paper in PubMed, 20 citations in OpenAlex.
- Ten alien chromosome additions of Gossypium hirsutum-Gossypium bickii developed by integrative uses of GISH and species-specific SSR markers.Molecular genetics and genomics : MGG · 2018Article
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5 authors at 3 institutions in 2 countries.
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No grant is acknowledged in the PubMed record.
Abstract
To produce alien monosomic addition lines (AMALs) of Allium cepa (genomes CC, 2n = 2x = 16) carrying extrachromosomes from Allium roylei (RR, 2n = 2x = 16), reciprocal backcrossing of allotriploids (2n = 24, CCR) with diploids (2n = 16, CC) and selfing of a single allotriploid were carried out. The chromosome numbers in the BC(2)F(1) and BC(1)F(2) progenies ranged from 16 to 32. Forty-eight plants were recorded to possess 2n = 17 among a total of 169 plants in observation. Through the analyses of isozymes, expressed sequence tag (EST) markers, and karyotypes, all eight possible types of A. cepa-A. roylei monosomic addition lines (CC+1R-CC+8R) could be identified. Seven types of representative AMALs (without CC+2R) were used for the GISH analysis of somatic chromosomes. Except for CC+6R, all AMALs showed an entire (unrecombined) extrachromosome from A. roylei in the integral diploid background of A. cepa. A single recombination between A. cepa and A. roylei was observed on the extrachromosome in the remaining type. All alloplasmic AMALs possessing A. roylei cytoplasm showed high or complete pollen sterility. Only the autoplasmic CC+4R with A. cepa cytoplasm possessed relatively high pollen fertility. The bulbs of CC+4R displayed the distinct ovoid shape that discriminates them from spherical or oval ones in other AMALs. Downy mildew screening in the field showed higher resistance in A. roylei, a hypo-allotriploid (CCR-nR, 2n = 23), and an allotriploid (CCR, 2n = 24). Meanwhile, no complete resistance was found in some AMALs examined. This was the first trial toward the establishment of a complete set of A. cepa-A. roylei monosomic additions.
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