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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 59 for “"perennial ryegrass"”.
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Understanding pasture performance: the interaction between perennial ryegrass and viruses
… systems in New Zealand is a pasture comprised of perennial ryegrass (Lolium perenne L.). Therefore, the productivity and profitability of livestock industries is inextricably linked to, and influenced by, the quality and performance of the underlying perennial ryegrass pasture. However, previous …
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Investigations of self-incompatibility (SI) in perennial ryegrass (Lolium perenne L.)
Perennial ryegrass (Lolium perenne L.) is one of the most economically and environmentally important grass species for the temperate zone. It maintains effective self-incompatibility (SI), which promotes outbreeding as well as limits the efficient production of inbred lines and hybrids. SI in L. …
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Protoplast fusion for intraspecific transfer of cytoplasmic male sterility in perennial ryegrass
Contains fulltext : mmubn000001_130152498.pdf (Publisher’s version ) (Open Access)
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Evaluation of perennial ryegrass cultivars for dairy production under different pasture management
The main objective of this thesis was to evaluate perennial ryegrass (Lolium perenne L.) cultivars for dairy production under different pasture management. Five experiments were conducted in Canterbury, New Zealand to evaluate perennial ryegrass in terms of morphology (experiment 1), nutritive …
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Competitive Effects of Perennial Ryegrass and Chewings Fescue on Bermudagrass Seed Establishment
Perennial ryegrass (Lolium perenne L.) is widely used as a fairway turf on golf courses throughout the transition zone. The transition zone represents the geographical areas between the temperate and subtropical climates, where neither warm season nor cool season grasses are well adapted. The …
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Resistance to African black beetle (Heteronychus arator) in perennial ryegrass (Lolium perenne L.) infected with AR1 endophyte
… & Schardl, stat. nov. et comb. nov. endophyte-perennial ryegrass (Lolium perenne L.) associations which do not cause toxicity to livestock and with strong resistance to African black beetle (H. arator), would be of significant value to farmers in regions where this pest is a problem. Epichloë …
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Characterization of Resistance to Gray Leaf Spot [Pyricularia Grisea (Cooke) Sacc.] in Perennial Ryegrass and Tall Fescue
The tall fescue population was analyzed using bulked segregant analysis (BSA) with random amplified polymorphic DNA (RAPD) markers to identify DNA markers associated with resistance to gray leaf spot. Although polymorphic bands were identified between the resistant and susceptible bulks, these …
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Impact of Sulfonylurea Herbicides on Seeded Bermudagrass Establishment and Cold Temperature Influence on Perennial Ryegrass Response to Foramsulfuron
… exists among sulfonylurea herbicides used for perennial ryegrass control. Objectives of the conducted research were to evaluate sulfonylurea herbicides for safety and utility while establishing seeded bermudagrass, and to elucidate variability in perennial ryegrass control with foramsulfuron. …
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Differential dry matter production, nutritive value and grazing utilisation of perennial ryegrass varieties and mixtures evaluated within intensive grazing regimes
… production and therefore maximise profit. Perennial ryegrass (Lolium perenne L.) grazing efficiency has been shown to influence farm herbage utilisation. <br/><br/>The objective of this thesis was to develop a methodology for the evaluation of perennial ryegrass variety grazing efficiency. …
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Effect of Alternative Management Practices and the Fungal Endophyte (Epichloë festucae var. lolii) on Improving the Longevity of Perennial Ryegrass (Lolium perenne L.) in Minnesota
One of the primary challenges facing the perennial ryegrass seed producers in Minnesota is a lack of perenniality in the species when grown for seed. The first research project explored alternative management options, including fall residue management strategies and plant growth regulator …
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Lateral Movement of Herbicides on Golf Course Fairways and Effects on Bentgrass Greens
… for use in warm-season turf to control perennial ryegrass could be dislodged from treated areas and deposited on neighboring cool-season grasses. In a field study, rimsulfuron was applied at 17.5 or 35 g ai/ha to perennial ryegrass in the afternoon; the following morning while dew was …
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Evaluation of drought tolerance in genetically modified Lolium perenne L. and Arabidopsis thaliana
… a potential role in drought tolerance of perennial ryegrass (Lolium perenne L.). UBLs are related in tertiary structure to ubiquitin (UB) and they both serve as regulators of many cellular processes. In previous work over-expression of one UBL, the Lolium perenne L. Ubl5 (LpUbl5) homologue …
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A metabolomics-based approach to study abiotic stress in <em>Lolium perenne</em>
… production industries. In temperate grasslands, perennial ryegrass (L. perenne) is the major forage grass and this species is particularly suitable as a forage grass due to its high yield and digestibility, when compared with other species. However, perennial ryegrass is not well adapted to …
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Overseeded Bermudagrass Fairway Performance and Post Dormancy Transition as Influenced by Winter Overseeding Practices and Trinexapac-ethyl
… decline in golf course fairways overseeded with ryegrasses (Lolium sp.) for winter quality if ryegrasses persist due to cool spring temperatures, use of persistent ryegrass varieties, and management practices that favor ryegrasses over bermudagrass. Winter overseeding practices that facilitate a …
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Prohexadione Calcium for Turfgrass Management and Poa annua Control and Molecular Assessment of the Acetolactate Synthase Gene in Poa annua
… Pers.), Kentucky bluegrass (Poa pratenis L.), perennial ryegrass (Lolium perenne L.), and zoysiagrass (Zoysia japonica Steud.) equivalent to trinexapac-ethyl at 0.70, 0.22, 0.60, and 0.27 kg a.i./ha -1, respectively. Further experiments conducted at three locations across Virginia determined …
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An Investigation into Transformation and RNA Editing in the Lolium Plastome
… 91% grassland, which predominantly consists of perennial ryegrass (Lolium perenne L.). Owing to the predicted climate change, grasslands in the east of Ireland will be severely affected over the next hundred years. Due to this prediction, strategies to circumvent this problem need to be …
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Assessing Drift and Lateral Mobility of Flazasulfuron and Trifloxysulfuron Sodium
… such as tall fescue (Festuca arundinacea) and perennial ryegrass (Lolium perenne) without harming warm-season grasses. Although SU herbicides like flazasulfuron bring several potential benefits to turfgrass markets, there are also several concerns related to using these herbicides in turfgrass …
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The release of nitrogen and carbohydrate from herbage during comminution
… from herbage of five commonly used forages: perennial ryegrass (Lolium perenne L.), white clover (Trifolium repens L.), lucerne (Medicago sativa L.), chicory (Cichorium intybus L.), and plantain (Plantago lanceolata L.), collected in February, May, August, and November of 2015. The amount of …
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Effect of replacing nitrogen fertiliser with gibberellic acid on response of perennial ryegrass and white clover pasture : A thesis submitted in partial fulfilment of the requirements for the Degree of Doctor of Philosophy at Lincoln University
… of substituting N fertiliser with GA on a perennial ryegrass (Loliume perenne, PRG) and white clover (Trifolium repens, WC) pasture. A twelve-month, cut and carry plot trial explored dry matter (DM) production, botancial composition, ryegrass tiller size and density and forage nutritive …
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