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genesegregation, etc ; Markov chain; ancestry; kinship; quantitative traits; rabbits; statistical models; variance; Show all 8 Subjects
Abstract:
... KEY MESSAGE: The identity-by-descent (IBD)-based mixed model approach introduced in this study can detect quantitative trait loci (QTLs) referring to the parental origin and simultaneously account for multilevel relatedness of individuals within and across families. This unified approach is proved to be a powerful approach for all kinds of multiparental population (MPP) designs. Multiparental popu ...
... Flower corolla colour is an important trait for the attraction of pollinators and for the horticultural industry. Gossypium arboreum (L.) accessions from the United States Department of Agriculture germplasm collection frequently show flowers with a yellow coloured corolla. Accession PI 529731 is unique in that the flowers have a red coloured corolla. Genetic characterization of corolla pigmentati ...
... Amitosis is a widespread form of unbalanced nuclear division whose biomedical and evolutionary significance remain unclear. Traditionally, insights into the genetics of amitosis have been gleaned by assessing the rate of phenotypic assortment. Though powerful, this experimental approach relies on the availability of phenotypic markers. Leveraging Paramecium tetraurelia, a unicellular eukaryote wit ...
... Dissecting the genetic architecture of quantitative traits in autotetraploid species is a methodologically challenging task, but a pivotally important goal for breeding globally important food crops, including potato and blueberry, and ornamental species such as rose. Mapping quantitative trait loci (QTLs) is now a routine practice in diploid species but is far less advanced in autotetraploids, la ...
genesegregation, etc ; additive effect; alleles; analysis of variance; biotechnology; corolla; equipment; genomics; loci; self-pollination; tetraploidy; Show all 11 Subjects
Abstract:
... We studied the petal number trait in a population obtained after self-pollination of R. x damascena f. trigintipetala following analysis of molecular markers which have previously been mapped near the major dominant locus Blfo/d6 determining this trait in other rose species including R. multiflora and R. hybrida. The results showed that the same genetic mechanism, which determines the petal number ...
genesegregation, etc ; cataract; human genetics; humans; mutation; Show all 5 Subjects
Abstract:
... There was a spacing error in the initial online publication, and there were errors in the Acknowledgments section. The original article has been updated. ...
Samuel C. Chukwu; Mohd Y. Rafii; Shairul I. Ramlee; Siti I. Ismail; Yusuff Oladosu; Kazeem Kolapo; Ibrahim Musa; Jamilu Halidu; Isma’ila Muhammad; Muideen Ahmed
... Bacterial leaf blight caused by Xanthomonas oryzae pv oryzae (Xoo) and blast caused by Magnaporthe oryzae are major diseases responsible for significant yield loss in rice production across all rice growing regions. Host plant resistance has been advocated as a sustainable means of guarding against the diseases. This experiment was conducted with the aim to introgress multiple resistance genes aga ...
... A genome manipulation approach based on double-crossover homologous recombination was developed in the polyploid model organism Thermus thermophilus HB27 without the use of any selectable marker. The method was established and optimized by targeting the megaplasmid-encoded β-glucosidase gene bgl. When linear and supercoiled forms of marker-free suicide vector were used for transformations, the fre ...
genesegregation, etc ; Euglossa; daughters; females; insect behavior; kin selection; kinship; microsatellite repeats; models; mothers; nests; sisters; social behavior; Show all 13 Subjects
Abstract:
... The present study investigated the level of reproductive skew during the reactivation processes of 11 nests of Euglossa cordata. Behavioral observations associated with kinship analysis between offspring and females involved in these processes were carried out. Different types of associations between females occurred in these reactivations: between mothers and daughters, sisters, cousins, and unre ...
John McCallum; William Laing; Sean Bulley; Susan Thomson; Andrew Catanach; Martin Shaw; Mareike Knaebel; Jibran Tahir; Simon Deroles; Gail Timmerman-Vaughan; Ross Crowhurst; Elena Hilario; Matthew Chisnall; Robyn Lee; Richard Macknight; Alan Seal
... During analysis of kiwifruit derived from hybrids between the high vitamin C (ascorbic acid; AsA) species Actinidia eriantha and A. chinensis, we observed bimodal segregation of fruit AsA concentration suggesting major gene segregation. To test this hypothesis, we performed whole-genome sequencing on pools of hybrid genotypes with either high or low AsA fruit. Pool-GWAS (genome-wide association st ...
genesegregation, etc ; Vaccinium macrocarpon; alleles; chromosome mapping; citric acid; cranberries; cultivars; flavor; fruit acids; fruit composition; fruit quality; genetic markers; genetic traits; genetic variation; genotype; loci; microsatellite repeats; phenotype; progeny; recessive genes; single nucleotide polymorphism; titratable acidity; wild relatives; Show all 23 Subjects
Abstract:
... The fruit of American cranberry (Vaccinium macrocarpon Ait.) is known for its tart, acidic taste. Although some acidity is required for expressing fruit flavor, the high acidity of cranberry requires considerable amounts of “added-sugars” to make cranberry products palatable. Reducing acidity of cranberry would allow for less sugar to be added to cranberry products. In fruit, total acidity is quan ...
... Clustered regularly interspaced short palindromic repeats (CRISPR)/CRISPR-associated 9 (CRISPR/Cas9) technology provides an efficient tool for editing the genomes of plants, animals and microorganisms. Glutamate:glyoxylate aminotransferase 1 (GGAT1) is a key enzyme in the photorespiration pathway; however, its regulation mechanism is largely unknown. Given that EMS-mutagenized ggat1 (Col-0 backgro ...
genesegregation, etc ; autotetraploidy; breeding; genes; genetic analysis; genetic models; genetic variance; genotype; linear models; ornamental plants; phenotype; plant height; population genetics; population structure; potatoes; quantitative trait loci; quantitative traits; Show all 17 Subjects
Abstract:
... Dissecting the genetic architecture of quantitative traits is a crucial goal for efficient breeding of polyploid plants, including autotetraploid crop species, such as potato and coffee, and ornamentals such as rose. To meet this goal, a quantitative genetic model is needed to link the genetic effects of genes or genotypes at quantitative trait loci (QTL) to the phenotype of quantitative traits. W ...
... Blackleg is a devastating disease in canola worldwide, except in China, caused by the fungal pathogen Leptosphaeria maculans. The B-genome Brassica species were reported to have a strong resistance to the blackleg pathogen L. maculans. Backcross (BC) generations, BC₁F₁ to BC₄F₁, were derived from a cross B. napus × B. juncea. Phenotype of L. maculans isolate J20 showed that 49% of BC₁F₁, 27% of BC ...
... The pollination-constant, non-astringent (PCNA) type of persimmon is ideal for production because its fruits lose astringency at harvest regardless of seed formation. The PCNA trait in Japanese persimmons is controlled by a single locus, AST, and is recessive to the non-PCNA trait. Because cultivated persimmon is hexaploid, only the homozygous genotype with six recessive alleles is PCNA. A region ...
genesegregation, etc ; Tyto alba; alleles; copy number variation; ecology; evolution; genotyping; high-throughput nucleotide sequencing; loci; major histocompatibility complex; progeny; Show all 11 Subjects
Abstract:
... With their direct link to individual fitness, genes of the major histocompatibility complex (MHC) are a popular system to study the evolution of adaptive genetic diversity. However, owing to the highly dynamic evolution of the MHC region, the isolation, characterization and genotyping of MHC genes remain a major challenge. While high‐throughput sequencing technologies now provide unprecedented res ...
... Flowering time is an important trait associated with crop yield and quality. In a previous report, genome variation of significant DNA polymorphism was observed in the early maturing type rice mutant (EMT1) compared to that of wild type (WT). To identify quantitative trait loci (QTL) for flowering time, we constructed a linkage map of 36 InDel- and 6 SNP-markers with F₂ plants derived from the cro ...
... Oilseed rape (Brassica napus L.) is among dicotyledonous plants, a model species for microspore embryogenesis. Tremendous differences exist among oilseed rape genotypes in their embryogenic response and direct embryo to plant conversion. Despite some attempts to identify relevant genes, the genetic basis of these traits remains largely unknown. The objective of this work was to develop and to prov ...
... To identify markers closely linked to the everbearing gene in the octoploid cultivated strawberry Fragaria × ananassa, we conducted linkage analysis based on simple sequence repeat (SSR) polymorphisms. We analyzed F₁ populations from three crosses: ‘Sagahonoka’ × ‘Summer-berry’ (94 individuals), ‘Sagahonoka’ × ‘Ever-berry’ (137 individuals), and ‘Hecker’ × ‘Sagahonoka’ (177 individuals). ‘Sagahono ...
genesegregation, etc ; alleles; amylose; backcrossing; glutinous rice; introns; loci; major genes; marker-assisted selection; polymerase chain reaction; single nucleotide polymorphism; China; Show all 12 Subjects
Abstract:
... Rice amylose content (AC) is a key determinant for grain end-use quality attributes. The base substitution ((G → T) at +1 loci of the first intron (In1) of Waxy (Wx), a major gene controlling AC in rice, results in decreased AC. A new SNP typing method of Wx In1 based on polymerase chain reaction with confronting two-pair primers (PCR-CTPP) was reported here: first its practicability was confirmed ...