Plant Breeding and Genetics Commons^™

Natural And Artificial Selection Of Multiple Alleles Revealed Through Genomic Analyses, Jana Biová, Ivana Kaňovská, Yen On Chan, Manish Sridhar Immadi, Trupti Joshi, Kristin Bilyeu, Mária Škrabišová

Biomedical Sciences

Genome-to-phenome research in agriculture aims to improve crops through in silico predictions. Genome-wide association study (GWAS) is potent in identifying genomic loci that underlie important traits. As a statistical method, increasing the sample quantity, data quality, or diversity of the GWAS dataset positively impacts GWAS power. For more precise breeding, concrete candidate genes with exact functional variants must be discovered. Many post-GWAS methods have been developed to narrow down the associated genomic regions and, ideally, to predict candidate genes and causative mutations (CMs). Historical natural selection and breeding-related artificial selection both act to change the frequencies of different alleles of …

Genomic Variations Explorer (Genvarx): A Toolset For Annotating Promoter And Cnv Regions Using Genotypic And Phenotypic Differences, Yen On Chan, Jana Biová, Anser Mahmood, Nicholas Dietz, Kristin Bilyeu, Mária Škrabišová, Trupti Joshi

Biomedical Sciences

The rapid growth of sequencing technology and its increasing popularity in biology-related research over the years has made whole genome re-sequencing (WGRS) data become widely available. A large amount of WGRS data can unlock the knowledge gap between genomics and phenomics through gaining an understanding of the genomic variations that can lead to phenotype changes. These genomic variations are usually comprised of allele and structural changes in DNA, and these changes can affect the regulatory mechanisms causing changes in gene expression and altering the phenotypes of organisms.Inthisresearchwork,wecreatedtheGenVarXtoolset,thatisbacked by transcription factor binding sequence data in promoter regions, the copy number variations …

Linkage Analysis And Residual Heterozygotes Derived Near Isogenic Lines Reveals A Novel Protein Quantitative Trait Loci From A Glycine Soja Accession, Yia Yang, Thang C. La, Jason D. Gillman, Zhen Lyu, Trupti Joshi, Mariola Usovsky, Qijian Song, Andrew Scaboo

Biomedical Sciences

Modern soybean [Glycine max (L.) Merr] cultivars have low overall genetic variation due to repeated bottleneck events that arose during domestication and from selection strategies typical of many soybean breeding programs. In both public and private soybean breeding programs, the introgression of wild soybean (Glycine soja Siebold and Zucc.) alleles is a viable option to increase genetic diversity and identify new sources for traits of value. The objectives of our study were to examine the genetic architecture responsible for seed protein and oil using a recombinant inbred line (RIL) population derived from hybridizing a G. max …

Epistatic Interaction Between Rhg1‑A And Rhg2 In Pi 90763 Confers Resistance To Virulent Soybean Cyst Nematode Populations, Pawan Basnet, Clinton G. Meinhardt, Mariola Usovsky, Jason D. Gillman, Trupti Joshi, Qijian Song, Brian Diers, Melissa G. Mitchum, Andrew M. Scaboo

Biomedical Sciences

Key message

An epistatic interaction between SCN resistance loci rhg1-a and rhg2 in PI 90763 imparts resistance against virulent SCN populations which can be employed to diversify SCN resistance in soybean cultivars.

Abstract

With more than 95% of the $46.1B soybean market dominated by a single type of genetic resistance, breeding for soybean cyst nematode (SCN)-resistant soybean that can effectively combat the widespread increase in virulent SCN populations presents a significant challenge. Rhg genes (for Resistance to Heterodera glycines) play a key role in resistance to SCN; however, their deployment beyond the use of the rhg1-b allele has been …

A Biosystematic Study Of The Polemonium Reptans L. Complex In The Eastern United States Including P. Reptans L. Var. Reptans, P. Reptans L. Var. Villosum Braun And Related Taxa (Polemoniaceae), Bill Lucas

Theses, Dissertations and Capstones

The taxonanic relationship of Polemoniun reptans L. var. reptans and P. reptans L. var. villosum Braun (Polemoniaceae) is examined in this studly. The former taxon occurs throughout most of the eastern deciduous forest while the latter is rare and limited to southern Ohio and northcentral Kentucky. The natural coherence of the species has provided a bimodal frequency distribution which displays clustering of the two varieties at opposite ends of a continuum. Significant differences were obtained using the BMDP7M multivariate analysis (0.05 level of significance) based on morphometric information gathered from herbarium specimens throughout the midwest and eastern states, between var. …