Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 237 for “"germplasm"”.
-
Virus elimination from Actinidia germplasm
… viruses have been isolated from Actinidia germplasm. Because the germplasm is difficult to replace it is vital that viruses are eliminated from the infected material. The anti-viral effect of thermotherapy and chemotherapy was tested on a selection of viruses that infect Actinidia species …
-
Genetic diversity of midwestern oat germplasm
… oat cultivars and experimental lines from four germplasm sources were crossed in a diallel mating design without reciprocals. F(,1) heterosis for grain yield was evaluated in two experiments, and 48 F(,2)-derived lines from each of the 36 matings were evaluated for bundle weight, grain yield, …
-
Characterization of anthocyanin production in maize germplasm
… the diversity of anthocyanin production in maize germplasm, 398 diverse accessions of pigmented maize were analyzed with High Performance Liquid Chromatography (HPLC). To the best of our knowledge, this is the largest collection of pigmented maize investigated for anthocyanin diversity and …
-
Heterosis between semidormant and nondormant derived alfalfa germplasm
… Heterotic groups are genetically distinct germplasms that, when hybridized, repeatedly produce progeny that express heterosis. In alfalfa, three main heterotic groups have been proposed in the United States: dormant M. falcata, semidormant M. sativa, and nondormant M. sativa. Nondormant …
-
Heterosis in a broad range of alfalfa germplasm
… The goal was to determine, which falcata germplasm created the most superior hybrids. Factors such as falcata parental morphology, molecular fragment differences, and climate of origin variables were used to group the falcata genotypes. European falcata germplasm displayed superior biomass …
-
Screening Diverse Soybean Germplasm for Water-logging Tolerance
… of this study were to screen a diverse soybean germplasm collection for water-logging tolerance (WLT) at both the V5 and R1 growth stage and to develop a method to screen soybean for WLT in greenhouse. One hundred thirty five genotypes consisting of historical genotypes, PIs, drought and WLT …
-
The cryopreservation of <i>Picea sitchensis </i>germplasm
… development is imperative such that elite germplasm can be conserved, without compromise to genetic integrity, whilst phenotypic validation of selected genotypes is undertaken.Three explant types were transferred from the Northern Research station, Roslin to the University of Abertay, …
-
Survey of plant density tolerance in U.S. maize germplasm
… area must be increased. A survey of U.S. maize germplasm was conducted to identify sources of favorable alleles for plant density tolerance and better understanding the genetics involved. Hybrids created using a genetically diverse set of inbreds representing parentage of key heterotic …
-
Confirming QTL for seed yield from exotic soybean germplasm
… putative QTL for seed yield derived from Exotic germplasm that were identified in previous QTL mapping studies. One BC1F9 confirmation population was developed from the cross Kenwood x LG94-1713 to test the QTL associated with SSR loci Satt405 (linkage group (LG), J chromosome (chr) 16) and two …
-
Identification and Utilization of Diverse Germplasm for Soybean Yield Improvement
… lines derived from crosses of diverse germplasm with adapted cultivars were evaluated for yield and genetic diversity. Experimental lines were identified that were higher yielding than their adapted parents. The lines also maintained their diversity from the ancestors and non-parental …
-
Physiological mechanisms of yield improvement in historical U.S. soybean germplasm
… was measured within this set of historical germplasm over 3 growing seasons. Traditional soybean breeding has improved ε_c through greater rates of A with no change in respiratory capacity. The gains in A were driven by increased rates of stomatal conductance (gs) and water use and not …
-
Characterization of Soybean Germplasm with Modified Phosphorus and Sugar Composition
… Different genetic mutations in two sources of germplasm, CX1834 and V99-5089, decrease the phytate and increase the inorganic phosphorus (Pi) content of seed. In V99-5089, a mutation in the D-myo-inositol 3-phosphate synthase 1 gene (MIPS1) also results in elevated sucrose content with a …
-
Variation in Drought Tolerance Attributes Among Tepary Bean (Phaseolus acutifolius) Germplasm
… superior genotypes of tepary bean. The germplasm was evaluated before and after the soil moisture stress treatment which was imposed on the trial by withholding water for 21 days. A 6 x 7 rectangular lattice design replicated three times was used for evaluating 42 genotypes. The results …
-
The Response of Tepary Bean (Phaseolus actifolius) Germplasm to Induced Mutation
See the attached abstract below
-
Characterization of malus germplasm and QTL mapping of fruit quality traits
… well as breed and select future apple cultivars. Germplasm characterization can reveal knowledge of genetic relatedness of accessions and is important towards the goal of increasing this genetic knowledge. This can lead to more efficient germplasm management and efficiency in breeding programs …
-
Assessment of methods to screen for carotenoids in yellow-fleshed potato germplasm
… to identify carotenoids in yellow-fleshed potato germplasm (N = 60) from the Colorado Potato Breeding and Selection Program. The specific aim eventually is to improve selection efficiency and accelerate genetic gain in nutritional quality of potato cultivars. Phenotypic tuber flesh color (FC) …
-
An Investigation of Seed Longevity and Antioxidant Changes of Conserved Barley Germplasm
… for the sustainable ex situ conservation of germplasm in genebanks, yet its reliable assessment remains a significant challenge. This research was conducted to predict the longevity of a diverse barley (Hordeum vulgare L.) germplasm collection comprising cultivated and wild types preserved in …
-
Molecular Marker Applications in Oat (Avena Sativa L.) Breeding and Germplasm Diagnostics
The ability to identify germplasm and select traits accurately is fundamental to successful plant breeding. Pedigrees and molecular markers facilitate these processes; however misleading experimental results can occur when incorrect relationships and/or cultivar names are recorded. Molecular …
-
Accelerated, graft-based germplasm conservation of American chestnut (Castanea dentata) in the South
… for conservation of rare American chestnut germplasm. Particularly when in situ conditions prevent trees from reaching sexual maturity, graft-propagation allows release from shade conditions and disease pressure to promote flowering. Collection of pollen from containerized grafted trees …
Page 1 of 12