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.
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Showing 1 to 20 of 22 for “"yield component"”.
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Pearl millet (Pennisetum americanum (L.) Leeke) emergence, yield and yield component response to seed quality and soil temperature
Call number: LD2668 .T4 1985 M62
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Pearl millet (Pennisetum americanum (L.) Leeke) emergence, yield and yield component response to seed quality and soil temperature
Call number: LD2668 .T4 1985 M62
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Double-Crop Soybean Vegetative Growth, Seed Yield, and Yield Component Response to Agronomic Inputs in the Mid-Atlantic, USA
… in the Mid-Atlantic, USA. Reduced double-crop yield can be attributed to: delayed planting that results in a shortened growing season and less vegetative growth; later-maturing cultivars that terminate main stem growth after flowering and have less growth and nodes; less soil moisture and …
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Soybean growth and yield response to interplant competition relief in various plant density environments
Soybeans have the ability to regulate growth and yield component production in response to changes in plant population and competition. Previous research has addressed these issues from various aspects, however, there is a lack of information regarding how interplant competition affects plant size …
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Molecular marker-facilitated study of quantitative trait loci in a maize population
… ear height, anthesis and silk emergence) and yield component traits (grain yield/plot, ear number/plot, 300-kernel weight, number of kernel rows/ear, ear length, ear diameter, cob diameter and kernel depth);A segregating population was created by crossing inbreds B52 and Mo17 and …
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Characterizing phenotypic diversity, genotype by environment interactions, and optimizing selection efficiency of a miscanthus germplasm collection
… seedlings in the field on survival, growth and yield, 3) assess genotypic differences in biomass yield, putative yield-component traits, and spring and autumn frost tolerance, 4) determine the predictive value of three putative yield-component traits for estimating yield, and 5) quantify the …
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Use of RFLP markers in maize as an aid in selection during inbreeding
… in F2 x FRB73 progeny were found for grain yield, stalk and root lodging, plant and ear height, maturity, and seven grain yield component traits. Many RFLP loci were associated with expression of multiple traits. RFLP alleles from BS11(FR)C7 were favorable over those from FRMo17 for some …
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Application of CRISPR/Cas9 to edit genes affecting seed morphology traits in wheat
… pipeline to five wheat orthologs of the rice yield component genes that have been identified previously. We obtained edited plants for all these genes and validated the effect of the mutations in TaGW7 on wheat traits, which showed trends similar to those in rice. These results suggest that …
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Evaluating an Advanced Intensive Management Strategy for Virginia Wheat
… evaluated in order to improve Virginia wheat yields and attempt to bring state average wheat yields of 4288 kg ha⁻¹ more closely in-line with the maximum yield achieved in the Virginia Tech Official Soft Red Winter Wheat Trials of 7400 kg ha⁻¹. Increases in nitrogen (N) fertilizer application …
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Genetic control of flowering time and biomass yield in sorghum
… been very little genetic improvement for biomass yield. Most biomass sorghums are very late flowering to maximize vegetative growth. In order to understand the genetic control of flowering time and biomass yield in sorghum, we used a diverse panel of more than 400 exotic sorghum inbreds to perform …
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Quantitative trait locus mapping of yield and yield components in canola (Brassica napus L.) under irrigated and rainfed treatments
… crops grown in Colorado must be high-yielding with limited or no irrigation inputs, and consequently canola cultivars adapted to the semi-arid climate of Colorado and the U.S. High Plains will need to be drought tolerant. To provide information relevant to improving adaptation of …
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Combining Ability for Ear Prolificacy and Response of Prolific Maize (Zea May L.) Hybrids to Low Nitrogen Stress
… in Sub-Saharan Africa still obtain low grain yields in maize largely due to low soil fertility. The soils are inherently low in nitrogen (N) that is required for the proper development of the maize plant. Currently there are no commercial cultivars for low N tolerance locally. The combining …
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Stability analysis for soybean (Glycine max (l.) Merrill) Cultivars in Eastern South Dakota Environments
<p>Crop yield is complex trait which is influenced by many factors such as environment conditions, genotypes, and genotype-by-environment (GE) interactions. Crop yield is also impacted by its component traits. It is important to identify cultivars with wide range of adaptation across various …
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Agronomic and Economic Comparison of Full-Season and Double-Cropped Small Grain and Soybean Systems in the Mid-Atlantic USA
… of this research were to: i) determine soybean yield and compare cropping system profitability of the three cropping systems; ii) perform a breakeven sensitivity analysis of the three cropping systems; and iii) determine the effect of planting date and previous winter crop on soybean yield and …
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The interdependent regulation of photosynthesis and the circadian clock in wheat
… photosynthesis but there were small effects on yield component traits. For the first time in wheat the loss of functional GI was shown to cause a delay in flowering time under long days. To date the effect of sugars on the wheat circadian oscillator have not been reported. Using a combination of …
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Molecular mapping of quantitative trait loci (QTL) for Fusarium head blight (FHB) resistance and agronomic traits in US hard winter wheat
… in wheat and results in dramatic losses in grain yield and quality. Use of genetic resistance is an effective approach to FHB control, but highly FHB resistant germplasms usually have many undesirable agronomic traits. To dissect the relationship between FHB resistance and yield component traits, …
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Irrigation scheduling for Sovereign Coronation grapevine based upon evapotranspiration calculations and crop coefficients /
… data were collected each growing seasons. Yield component data was collected and berries from each treatment were analyzed for soluble solids (Brix), pH, titratable acidity (TA), anthocyanins, methyl anthranilate (MA), and total volatile esters (TVE). Irrigation showed a substantial …
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Agronomic and nutritional considerations for increased soybean productivity
… and genetic factors that influence soybean yield. Despite recent agricultural innovations, there is a common perception that soybean yields have reached a plateau. While most producers overlook the fertility needs of soybean, others believe that improved nutritional management may hold …
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The effects of novel genetic diversity on yield and yield traits in a hybrid wheat pre-breeding programme
… F1 plants, has the potential to increase yield and yield stability in wheat. However, commercialisation of hybrid wheat is limited by high production costs but could be offset by increasing the yield. Introducing new diversity into hybrid breeding programmes could increase yield through …
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