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Articles 1 - 7 of 7
Full-Text Articles in Life Sciences
Quantitative Trait Loci Influencing Elemental Content In Grapevine Leaves, Jesse L. Krokower
Quantitative Trait Loci Influencing Elemental Content In Grapevine Leaves, Jesse L. Krokower
MSU Graduate Theses
In grapevine, the influence of the plant’s elemental composition (the ionome) on fruit and wine quality is well established, but its genetic underpinnings have received limited scientific attention. In this study, I analyzed the leaf ionome of 131 interspecific F1 hybrid progeny plants from a cross between a Vitis rupestris Scheele (♀) and a Vitis riparia Michx (♂) parents, which were replicated in four different environments: Southwest Missouri, Central Missouri, South Dakota, and New York. I sampled leaves at three different times during the growing season at all four locations and had the concentration of 20 elements measured using ICP-MS. …
Morphological And Genetic Analysis Of The Root System In Two American Grapevines (Vitis Species), Parinaz Mohtasebi
Morphological And Genetic Analysis Of The Root System In Two American Grapevines (Vitis Species), Parinaz Mohtasebi
MSU Graduate Theses
The North American grapes species Vitis rupestris Scheele and Vitis riparia Michx have been the pillars of rootstock breeding for many decades. Though a large body of viticultural knowledge has been accumulated on their impact on grafted scions, the genetic basis of their root system architecture (RSA) has received limited scientific attention. In this study, I generated and analyzed adventitious root systems from dormant cuttings of 22 V. riparia and 19 V. rupestris accessions, as well as 162 interspecific F1 hybrid progeny from a cross between V. rupestris (♀) and V. riparia (♂). I photographed the roots and then extracted …
Development Of Functional Markers For Resistance To Smut And Identification Of Genes Differentially Expressed In Response To Brown Rust In Sugarcane, Jose David Cortes
Development Of Functional Markers For Resistance To Smut And Identification Of Genes Differentially Expressed In Response To Brown Rust In Sugarcane, Jose David Cortes
LSU Doctoral Dissertations
Smut, caused by Sporisorium scitamineum and brown rust, caused by Puccinia melanocephala, are two of the most important diseases that affect sugarcane production in Louisiana and worldwide. Smut continues to cause losses in the breeding program in Louisiana. Therefore, a QTL analysis was conducted to identify molecular markers associated with resistance in F1 progeny (162) of a biparental cross between susceptible cultivar L 99-233 and resistant HoCP 96-540. Using 1,574 single-dose SNP markers, a total of 253 linkage groups (LG) were obtained with a genome coverage of 24,580.15 cM. Six QTLs were localized on five LGs. The highest …
Effect Of Harvest Time On The Incidence Of Red Drupelet Reversion And Development Of Tetraploid Linkage Maps In Blackberry, Mitchell E. Armour
Effect Of Harvest Time On The Incidence Of Red Drupelet Reversion And Development Of Tetraploid Linkage Maps In Blackberry, Mitchell E. Armour
Graduate Theses and Dissertations
The cultivated eastern U.S. blackberry (Rubus L. subgenus Rubus Watson) has gone through tremendous strides in both trait improvement and market outreach at the University of Arkansas System Division of Agriculture (UA System). What began as primarily a pick-your-own local fruit found mostly in the wild, has become a commercialized year-round product in most major U.S. grocery retailers. This could not have been achieved without decades of diligent breeding efforts. Although the genetic improvement of fresh-market blackberries has advanced, there are still issues that need to be addressed. One issue is the prevalence of red drupelet reversion (RDR), a physiological …
Mapping A New Disease Resistance Locus In An F1 Progeny Derived From Two Grape Wild Relatives, Gaurab Bhattarai
Mapping A New Disease Resistance Locus In An F1 Progeny Derived From Two Grape Wild Relatives, Gaurab Bhattarai
MSU Graduate Theses
Linkage maps and quantitative trait loci (QTL) analysis have become essential tools for the positional cloning of agronomically important genes and for marker-assisted breeding. In this study, two North American grape species, Vitis rupestris and Vitis riparia, and their 294 F1 progeny were used to construct parental linkage maps and to perform QTL analysis for downy mildew resistance. Single nucleotide polymorphism (SNP) discovery was accomplished using genotyping-by-sequencing (GBS) and resulted in 348,888 SNPs. Of these, 11,063 informative SNP markers (3.17% of the original SNP dataset) were derived after filtering for various quality parameters and missing data. A two-way …
Development Of Genomic Resources For The Evaluation Of Red Snapper, An Emerging Species Candidate For Marine Aquaculture And Stock Enhancement, Adrienne Elise Norrell
Development Of Genomic Resources For The Evaluation Of Red Snapper, An Emerging Species Candidate For Marine Aquaculture And Stock Enhancement, Adrienne Elise Norrell
Master's Theses
The northern red snapper (Lutjanus campechanus) is a highly targeted reef fish candidate for marine aquaculture and stock enhancement in the southern United States. This work aimed to develop genomic resources for the genetic management of aquaculture programs and to investigate population structure using high-throughput sequencing technologies. Eighty-four new microsatellite markers were developed through screening of Illumina paired-end sequencing reads. Microsatellite loci and Single Nucleotide Polymorphisms (SNPs) generated through Restriction Site Associated DNA (RAD) sequencing were assayed in 5 outbred full-sib families to construct a high-density linkage map of the red snapper genome. The map consists of 7,964 …
Utilization Of Microsatellite Markers For A Comparative Assessment Of Norton And Cynthiana, And The Linkage Map Construction Of A 'Chambourcin' X 'Cabernet Sauvignon' Population, Mia Elizabeth Mann
Utilization Of Microsatellite Markers For A Comparative Assessment Of Norton And Cynthiana, And The Linkage Map Construction Of A 'Chambourcin' X 'Cabernet Sauvignon' Population, Mia Elizabeth Mann
MSU Graduate Theses
The first part of this study utilized microsatellites to comparatively assess the cultivars Norton and Cynthiana. Although isozyme and simple sequence repeat (SSR) marker analyses in 1993 and 2009 provided preliminary evidence that Norton and Cynthiana grapes are genetically identical, only five banding patterns and four microsatellite loci were reported. Microsatellites (n=185) spanning 19 linkage groups were used to compare the cultivars for a genome-wide analysis. Capillary electrophoresis results revealed Norton and Cynthiana to be identical at 98.6% of alleles. In the second part of this study, an interspecific hybrid population was generated by crossing V. interspecific hybrid 'Chambourcin' and …