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A Functional Developmental Genomics Analysis Of Rin4 And Exocyst Genes As They Relate To Glycine Max Defense To The Plant Parasitic Nematode Heterodera Glycines Infection, Keshav Sharma
Theses and Dissertations
The initial interaction of vesicle and the target membrane prior to their fusion is called vesicle tethering, a process mediated by an octameric protein complex called the exocyst. The exocyst connects vesicles and binds them to phosphatidylinositol 4, 5-biphosphate (PI (4,5) P2), located on the plasma membrane. The exocyst complex is located at the target site, helping to prepare the soluble N-ethylmaleimide-sensitive fusion protein attachment protein (SNAP) receptor (SNARE) for docking and subsequent release of vesicular contents after fusion. The importance of the exocyst in cellular processes is inevitable since it performs central roles in exocytosis thereby inducing SNARE-mediated membrane …
Temperature Effects On Soybean Vegetative, Physiological, Reproductive Growth And Development, And Seed Yield And Quality, Firas Ahmed Alsajri
Temperature Effects On Soybean Vegetative, Physiological, Reproductive Growth And Development, And Seed Yield And Quality, Firas Ahmed Alsajri
Theses and Dissertations
Temperature is a major factor affecting plant growth and development at all stages. The objectives of this study were to investigate the temperature effects on all aspects of soybean growth and development. Five experiments were conducted at a wide range of temperatures under optimum water and nutrient conditions at specific growth stages. Two cultivars, Asgrow AG5332 (AG) and Progeny P5333RY (PR) from MG V with different growth habits, were used. All studies except the seed germination were conducted in sunlit plant growth chambers under optimum water and nutrient conditions. The seed germination experiment was conducted in a temperature-controlled incubator. Germination …
Influence Of Winter Annual Cover Crops And Insect Management Strategies On Insect Pests Of Mississippi Soybean, Daniel Adam Whalen
Influence Of Winter Annual Cover Crops And Insect Management Strategies On Insect Pests Of Mississippi Soybean, Daniel Adam Whalen
Theses and Dissertations
An increasing cultural practice in soybean, Glycine max (L.), production is the use of winter annual cover crops before planting. Species of grasses, legumes, and forbs are planted for many agronomic purposes during the fall months. In the spring, cover crops are killed and soybean planted into the residue. When the termination of the cover crops is delayed for longer lasting benefits, insect pest issues can arise. The movement of insect pests from cover crops to subsequent cash crops happens through a connection known as the “Green Bridge”. Pests found in cover crops such as the pea leaf weevil, Sitona …
Effects Of Cultural Practices On Soybean Nectar Production, Tyler Miles Smith
Effects Of Cultural Practices On Soybean Nectar Production, Tyler Miles Smith
Theses and Dissertations
Experiments were conducted to determine the effects of cultural practices such as irrigation, planting date, and maturity group on soybean nectar production. Multiple interactions between different factors influences the amount of total sugar present in soybean flowers. Pod production was increased in later planted soybean, but later planting resulted in reduction in yield. Another study was conducted to explore the effects that variety selection had on soybean nectar production. Soybean nectar production was highly variable among varieties and was influenced further depending on their growing location. Later maturing varieties produced significantly more soybean pods. This increase in pod production was …
Evaluation Of Kudzu Bug As A Pest In Mississippi Soybean Production Systems, William Michael Mcright
Evaluation Of Kudzu Bug As A Pest In Mississippi Soybean Production Systems, William Michael Mcright
Theses and Dissertations
The kudzu bug is an invasive species to the United States, and it has recently become a problem in the southern U.S. Experiments were conducted to examine the potential damage to vegetative stage soybean, with findings suggesting that kudzu bugs pose little threat to vegetative stage soybean in Mississippi soybean production systems. Foliar insecticides are an effective option for management of kudzu bug, however, neonicotinoid seed treatments are not recommended as an effective management strategy. Kudzu bug population densities of nymphs peaked in early August in soybean, and adult densities peaked in late September. This project was designed to develop …
Agronomic Practices And Irrigation Water Management Tools That Improve Water Use Efficiency In Mid-South Soybean Production Systems, Clinton Wilks Wood
Agronomic Practices And Irrigation Water Management Tools That Improve Water Use Efficiency In Mid-South Soybean Production Systems, Clinton Wilks Wood
Theses and Dissertations
The Mississippi River Valley Alluvial Aquifer (MRVAA) is declining precipitously due to irrigation withdrawal for row-crops. The development of scientific irrigation scheduling techniques and for soybean (Glycine max L.) will reduce withdrawal from the MRVAA. The objective of this research was to determine if soybean grain yield, irrigation water use efficiency (IWUE), and net return above irrigation cost could be optimized using a static irrigation threshold or if the irrigation threshold should be changed as a function of plant growth stage.
Impact Of Planting Strategies On Soybean (Glycine Max L.) Growth, Development And Yield, Shane Michael Carver
Impact Of Planting Strategies On Soybean (Glycine Max L.) Growth, Development And Yield, Shane Michael Carver
Theses and Dissertations
Soybean seed is one of the most costly inputs for soybean producers. Research was conducted in 2016 and 2017 in Mississippi to evaluate the impact of row spacing, planting date and seeding rate on soybean yield. Additional research was conducted to determine the optimal replant seeding rate, following a sub-optimal stand of soybean, to maximize soybean yield. These data suggest an early planting date, mid-April, at a seeding rate of 296,400 seeds ha-1, no matter the row spacing, resulted in the greatest soybean yield. No yield differences were observed for a replant seeding rate of 160,500 seeds ha-1 added to …
Evaluation Of Soybean Production Practices That Impact Yield Losses From Simulated Insect Defoliation, Benjamin Carroll Thrash
Evaluation Of Soybean Production Practices That Impact Yield Losses From Simulated Insect Defoliation, Benjamin Carroll Thrash
Theses and Dissertations
Soybean, Glycine max (L.) Merr., is planted across a vast amount of land in the Mid-Southern U.S. (Arkansas, Louisiana, Mississippi, and Tennessee), and yield responses to defoliation can vary. Experiments were conducted during 2015-2017 evaluating how soybean yield responds to multiple and continuous defoliation, as well as planting date and plant population. Multiple defoliation events were evaluated by defoliating soybean at varying levels at V3, V6, and both growth stages. There was no interaction between defoliation occurring at V3 and V6 growth stages, indicating that the impact of each defoliation event was independent of the other. The effect of continuous …