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The Identification Of Quantitative Trait Loci For Sucrose And Stachyose Content In Soybean Seed, Ailan Zeng
The Identification Of Quantitative Trait Loci For Sucrose And Stachyose Content In Soybean Seed, Ailan Zeng
Graduate Theses and Dissertations
Sucrose is a desirable sugar in soybean seed that affects the quality and taste of soyfoods, while stachyose is a non-digestible sugar that induces flatulence in non-ruminant animals. Therefore, soybean cultivars with high sucrose and/or low stachyose would be valuable for soyfood and meal markets. The objectives of this study were to identify quantitative trait loci (QTL) or genes associated with seed sucrose and stachyose content using simple sequence repeat (SSR) or single nucleotide polymorphism (SNP) markers. A low sucrose line, MFS-553, was crossed with a high sucrose plant introduction, PI 243545, to develop the sucrose QTL mapping population. A …
Heritability And Genetic Gain Of Seed Protein, Oil, And Yield Among Ril Of Soybean, Benjamin T. Wiggins
Heritability And Genetic Gain Of Seed Protein, Oil, And Yield Among Ril Of Soybean, Benjamin T. Wiggins
Masters Theses
Soybean is a remarkable crop that is used in many aspects of our everyday lives. The seed protein is used primarily for livestock feed, though it is becoming more available as a meat substitute for human consumption. Soybean oil is used in many products such as plastics, foods, and industrial products. Seed yield is the major trait that is selected for in a breeding program. A population of 239 F4 derived RIL from the cross of USG 5601T × U99-310255 was used to calculate heritability estimates by parent offspring regression and on an entry mean basis. This population was …
The Biology And Management Of Phytophagous Stink Bugs (Pentatomidae) In Mississippi Soybean Production Systems, James Wesley Mcpherson
The Biology And Management Of Phytophagous Stink Bugs (Pentatomidae) In Mississippi Soybean Production Systems, James Wesley Mcpherson
Theses and Dissertations
Stink bugs are the most economically important insect pest of soybeans in Mississippi. This study focused on several aspects of stink bug biology and management. One study examined the residual activity of certain insecticides. Rain was shown to reduce residual activity and after three days most insecticides provided very little control of stink bugs. Stink bugs complete at least one generation a year on early season hosts before moving into soybeans. A study of these early season hosts found that rice stink bug was more prevalent on grasses than the other hosts sampled. Brown stink bug was found on all …
Identification And Confirmation Of Ssr Markers And Qtl For Seed Calcium Content And Hardness Of Soybean, Moldir Orazaly
Identification And Confirmation Of Ssr Markers And Qtl For Seed Calcium Content And Hardness Of Soybean, Moldir Orazaly
Graduate Theses and Dissertations
The health benefits and the nutritional values of soyfood products have expanded the demand for food-grade soybean varieties. For whole soyfood products such as natto, small seeded varieties with proper texture are essential. Seed calcium content and hardness are main factors in determining the seed texture. Utilizing molecular markers associated with quantitative trait loci (QTL) for marker assisted selection (MAS) has been an efficient technique for breeders. To find molecular markers associated with a trait is an initial step. The confirmation of QTL in different environments and in different genetic backgrounds is important for MAS. The objectives of this research …
Evaluation Of Soybean Recombinant Inbred Lines For Yield Potential And Resistance To Sudden Death Syndrome, James Arthur Anderson
Evaluation Of Soybean Recombinant Inbred Lines For Yield Potential And Resistance To Sudden Death Syndrome, James Arthur Anderson
Theses
Evaluation of soybean recombinant inbred lines for seed weight yield, agronomic traits, and resistance to sudden death syndrome Sudden death syndrome (SDS) caused by Fusarium virguliforme is a devastating disease in soybean (Glycine max (L.) Merr.) that causes up to 70% of yield losses depending on the developmental stage when the plant become infected. The characterization of resistance is greatly significant for disease management. Therefore, three populations were developed by crossing three resistant lines, `Hamilton', LS90-1920 and LS97-1610 with a susceptible line to SDS, `Spencer'. Ninety-four F5:6 recombinant inbred lines from each population (Hamilton x Spencer, LS90-1920 x Spencer, and …
Two Studies Evaluating Input Use In Soybean And Cotton Production, Nathanael Mark Thompson
Two Studies Evaluating Input Use In Soybean And Cotton Production, Nathanael Mark Thompson
Masters Theses
Farmers are price takers for both inputs and outputs. Therefore, when the prices of inputs rise, as they have with many inputs used in agricultural production, optimal production practices may change. Two separate studies of the impacts of agricultural technology on input use in crop production were undertaken in this thesis. The first study evaluated economically optimal plant population considering seeding rate, maturity group, row spacing, and input-output prices in soybean production in the rolling uplands region of the upper Midsouthern United States. Data from field experiments at the University of Tennessee Research and Education Center at Milan, Tennessee during …
Fatty Acid Ω-Hydroxylases In Soybean, Jessica Koteles
Fatty Acid Ω-Hydroxylases In Soybean, Jessica Koteles
Electronic Thesis and Dissertation Repository
Soybean (Glycine max (L.) Merr.) is an important and widely cultivated crop. A substantial cause of soybean yield loss is due to root rot caused by the pathogen Phytophthora sojae. There is an established correlation between preformed soybean root aliphatic suberin and high levels of partial resistance to P. sojae. Since fatty acid ω-hydroxylase (FAωH), which introduces a second functional group to fatty acids, is a critical enzyme in suberin biosynthesis, characterization of soybean FAωHs was undertaken. Six putative soybean FAωHs (Gm FAωHs) were identified using a sequence-based in silico approach. Gene-specific primers were developed and relative …
Sensing Development Of A Soybean Canopy Under P Or K Nutritional Stress, Martin M. Navarro
Sensing Development Of A Soybean Canopy Under P Or K Nutritional Stress, Martin M. Navarro
Theses and Dissertations--Plant and Soil Sciences
The normalized difference vegetative index (NDVI) has been correlated with physiological plant parameters and used to evaluate plant growth. There is little information about the use of this technique to detect soybean nutrient deficiencies. The objective of this work was to determine the ability of the NDVI sensor to detect P and K deficiencies, and grain yield reduction, in soybean. During 2010 and 2011, NDVI measurements were made on a soybean field trial site known to exhibit yield responses to both P and K nutrition. Four replicates of 8 levels each of P and K nutrition were evaluated. The NDVI …
Analysis Of A Wound-Induced Gene Family In Glycine Max, Gena Robertson
Analysis Of A Wound-Induced Gene Family In Glycine Max, Gena Robertson
Masters Theses
Gene families in plants are important in understanding genome evolution indicating when and where genome duplications and segmental duplications occurred as well as subsequent divergence and subfunctionalization. A gene family in Glycine max that encodes a WI12 protein, wound-induced protein, was found to consist of ten genes on five chromosomes. Wound-induced proteins are activated in response to wounding in plants, and the WI12 protein in particular is thought to be involved in cell wall modifications at the wound site. A variety of bioinformatics tools have been used to analyze the expansion of this family in soybean as well as identify …