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 36 for “"Seed viability"”.
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The use of tetrazolium chloride as a means of determining seed viability
Thesis (M.S.)--Michigan State University of Agriculture and Applied Science. Dept. of Botany and Plant Pathology, 1951
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Reproduction and establishment of two endangered African cedars, Widdringtonia cedarbergensis and Widdringtonia whytei
… density may limit pollen dispersal, reduce seed viability and increase self-pollination rates, causing an inbreeding depression, resulting in less fit offspring. Based on this research, I hypothesise that pollen transfer in Widdringtonia is distance-dependant and therefore populations with …
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Weed seed survival in an agriculturally-based anaerobic digester
Weed seeds contaminating cattle feed can pass unaffected through the animal's digestive tract and may germinate when manure is returned to land as fertilizer. This investigation was undertaken to determine the effects of anaerobic fermentation of raw manure on the viability of Johnsongrass and Fall …
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An investigation into seed germination requirements of some of the nut-fruited restionaceae
… with mostly ant-dispersed (myrmecochorous) seeds that are endemic to the fynbos region of South Africa. Prior to this study, germination trials largely based on an ecological approach had not elucidated methods of improving seed germination in these species. Investigations of seed morphology …
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Numerical model for analysis and control of the quality of bulk-stored grain using cold air
… increase of insect pests can be slowed, seed viability is maintained, dry matter loss is reduced and the persistence of chemical pesticides can be improved. This thesis reports the development of a mathematical model of ventilated grain stores that enables optimal cooling strategies to be …
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Oxidative stress and seed survival
… primarily in intermediate (desiccation tolerant) seeds of <i>Carica papaya</i> L. (Papaya) and recalcitrant (desiccation intolerant) seeds of <i>Aesculus hippocastanum</i> L. (Horse chestnut), but also in other species covering a range of desiccation tolerances, with a view to determining the role …
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Evaluation of physiological and morphological basis for drought resistance in maize and sorghum
… and photosynthetic pigment compositions) and seed viability and quality response of maize (cv Melkassa-2) and sorghum cv Macia) after exposure to and recovery from pre and post-flowering dehydration in plants grown in a controlled environment growth chamber under constant environmental …
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Pengaruh posisi biji pada tongkol dan suhu penyimpanan terhadap viabilitas biji jagung (Zea mays L.) pada berbagai umur simpan
… viabilitas terendah. ENGLISH: Decrease in seed viability during storage is a common phenomenon that occurs in any type of seeds within a certain time. Decrease in viability did not occur simultaneously in one package saved seed, but gradually within a certain period of savingThis research …
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Pengaruh suhu dan lama penyimpanan terhadap viabilitas benih kacang hijau (Phaseolus radiatus L)
… high in protein vegetable. Things to consider in seed storage is the deterioration (deterioration of quality) seeds by a factor of temperature and storage time. Save room temperature plays a role in maintaining seed viability during storage, low temperature is better than high temperatures for …
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Relative influence of temperature and disturbance on vegetation dynamics in the Low Arctic : an investigation at multiple scales.
… in alder productivity, catkin production, and seed viability, as well as differences in plant community composition and microenvironment. The magnitude of plot-level responses to disturbance compared to variation across the temperature gradient suggests that in the short-term, increasing the …
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PHYSIOLOGICAL CHARACTERIZATION ON SEED AGING OF SIX NATIVE SHRUB SPECIES
… requires a consistent and adequate supply of seeds of native shrubs. However, annual seed production is erratic and seeds are usually short lived and insufficient for the reclamation projects. Seeds of six native shrub species including: Prunus virginiana, Prunus pensylvanica, Arctostaphylos …
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Pengaruh suhu dan lama penyimpanan terhadap viablitas benih wijen (Esamum indicum L.)
… the science develops. Sesame (Sesamum indicum L.)seed is useful for human health due to its oil containing antioxidant. In Indonesia, sesame seed are currently stored by using conventional method that is by drying prior to storage. Things to consider in seed storage is the deterioration …
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Pengaruh suhu dan lama penyimpanan terhadap viabilitas benih kapas (Gossypium hirsutum L.)
… for example the low of cotton vigor so as the seed hard to sprout out. In this case, the storage of qualified seed using high technology is needed. Besides that, it is important to fulfill the need of seed for next cultivating supply and for long-time period purposes. The technical storage of …
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The effect of water stress and storage conditions on seed quality of chickpea genotypes characterized by differences in seed size and coat colour
… in agricultural ecosystems. However, its seed quality and hence reproduction is constrained by water stress, seed size and storage conditions. This study was carried out at the University of KwaZulu- Natal (UKZN), Pietermaritzburg Campus. It was conducted to evaluate the performance of …
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Integrated management of the invasive weed, cut-leaved teasel (Dipsacus laciniatus L.) along a Missouri highways
… and undisturbed areas. Studies regarding seed biology, detection, and control measures were conducted to improve teasel management along a four mile section of Highway interstate 70 in central Missouri. Seed characteristic such as viability after flowering, emergence pattern and …
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Peningkatan viabilitas benih tembakau (Nicotiana tabacum L) dengan osmoconditiong polyethilene glikol (PEG) 6000
… ENGLISH: To conserve a germplasm in a form of seeds (such as tobacco seeds), seeds are often conserved at low temperature to address the viability decline due to environmental flogging. But the low temperature storage frequently affects seed skin hardening, making the seeds impermeable to …
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Pengaruh invigorasi menggunakan Polietilena glikol (PEG) 6000 terhadap viabilitas benih jarak pagar (Jatropha curcas L.)
… Propagation is done by society using generative (seed). Problems faced related to the use of seed is seed viability during and after storage. Decreased seed viability needs to be improved by using a technique invigorasi Polyethylene Glycol (PEG) 6000. This study aimed to determine the effect of …
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Pengaruh konsentrasi dan lama perendaman ekstrak bawang merah (Allium cepa L.) terhadap viabilitas benih kakao (Theobroma cacao L.)
… benih kakao (Theobroma cacao L.). ENGLISH: Cocoa seed is recalcitrant seed,it is seed that is not resistant with high temperature or drained, sensitive to temperature and low humidity. Difficulty and problem are to handle recalcitrant seed itself in the cultivation it. There have been many …
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Water Chestnut: Field Observations, Competition, and Seed Germination and Viability in Lake Ontario Coastal Wetlands
… Percent coverage, time of flowering, time of seed production, and co-occurring species were noted. A competition experiment was performed using water chestnut and white water lily (Nymphaea odorata Aiton). They were planted together and in monocultures of differing densities. A greenhouse …
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