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Dissertations / Theses on the topic 'Early seedlings'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

Sulaiman, Raja Barizan Raja. "Studies on the early establishment of dipterocarp seedlings in a Malaysian logged hill forest." Thesis, University of Stirling, 1997. http://hdl.handle.net/1893/21437.

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A 5.6 ha research plot in logged hill forest in central Peninsular Malaysia at Berkelah F. R., Pahang was set up to study the early establishment of dipterocarp species in the field. The site of the logged forest could be broadly grouped into three classes based on the degree of canopy opening and soil compaction: (1) categories B&A: open (25-55 % relative light intensity (RLI) as a high light level) and compacted or less compacted soil, respectively (2) category C: partial shade (8-9 % RLI as a medium) and less compacted soil, and (3) categories D&E: closed canopy (2-3 % RLI as a low light le

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2

Yang, Dongsheng. "The response of two eucalypt subspecies to water stress and fertilizer at early seedling stage." Thesis, Canberra, ACT : The Australian National University, 1987. http://hdl.handle.net/1885/140223.

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3

Schatz, Jason D. "Early Life Stage Characteristics of Six Acadian Conifer Species: Germination and Seedling Development in a Changing Climate." Fogler Library, University of Maine, 2007. http://www.library.umaine.edu/theses/pdf/SchatzJD2007.pdf.

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4

Nemu, Tajure N. "Effects of post-hardening fertilization on early growth and nutrition of planted black spruce seedlings." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape16/PQDD_0002/MQ29459.pdf.

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5

El-Hallak, Mona. "Nutrient and carbon loading of black spruce containerized seedlings during nursery culture and early outplanting." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape2/PQDD_0021/MQ53451.pdf.

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6

Ogle, Mike. "Factors affecting the early growth and survival of indigenous seedlings planted for the purpose of ecological restoration." Thesis, University of Canterbury. Forestry, 1996. http://hdl.handle.net/10092/7162.

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This report consists of two parts: 1) a review of factors affecting the early growth and survival of indigenous seedlings planted for the purpose of ecological restoration; 2) field trials of different treatments at establishment of planted Coprosma robusta and Phormium tenax on an overburden dump and coastal dunes at Cape Foulwind, Westport, New Zealand. The literature review includes information from New Zealand and international sources. Where little is information is available on indigenous species information from forestry research has been discussed. Little is known about the nutrient r

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7

Cheng, Chen. "Semi-global Analysis of the Early Cold Stress Response Transcriptome of Developing Seedlings of Rice (Oryzasativa L.,japonica)." Fogler Library, University of Maine, 2006. http://www.library.umaine.edu/theses/pdf/ChengC2006.pdf.

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8

Danusevicius, Darius. "Early genetic evaluation of growth rhythm and tolerance to frost in Picea abies (L.) Karst /." Uppsala : Swedish Univ. of Agricultural Sciences (Sveriges lantbruksuniv.), 1999. http://epsilon.slu.se/avh/1999/91-576-5637-1.pdf.

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9

Gadeh, H. M. "The effect of compost and priming on the salt tolerance of bread wheat (Triticum aestivum L. cv. S-24 and cv. Slambo) during germination and early seedling establishment." Thesis, Coventry University, 2013. http://curve.coventry.ac.uk/open/items/f0bd31e5-d16c-4435-993a-ab1ec64d7bc3/1.

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Soil salinity and the arid climate in Libya are major constraints in agriculture and predominantly in foodstuff production which are limiting wheat production and yield. The effect of pre-sowing seed treatments with 50 mM of KCl, NaCl, CaCl2, and distilled water as hydropriming on germination and early seedling growth in two wheat (Triticum aestivum L.) cultivars S-24 (tolerant) and Slambo (untested before) under 0, 100, 200 and 300 mM NaCl concentrations was examined. CaCl2 was the only priming treatment that significantly improved the germination percentage, germination rate, and mean germin

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10

Abreu, F. M. S. G. "Influence of atmospheric saturation deficit on early growth of groundnut." Thesis, University of Nottingham, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.378471.

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11

Bloomberg, Mark. "Modelling germination and early seedling growth of radiata pine." Lincoln University, 2008. http://hdl.handle.net/10182/681.

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Background: This study seeks to model aspects of the regeneration of radiata pine (Pinus radiata D.Don) seedlings under a range of environmental conditions. This study investigated whether “hybrid” mechanistic models, which predict plant growth and development using empirical representations of plant physiological responses to the environment, could provide a realistic alternative to conventional empirical regeneration models. Objectives: The objectives of this study were to 1) identify the functional relationships between the environmental conditions controlling germination, establishmen

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12

Hahne, Kathryn S., and Ursula K. Schuch. "Nitrogen Requirements of Prosopis Velutina during Early Seedling Growth." College of Agriculture and Life Sciences, University of Arizona (Tucson, AZ), 2004. http://hdl.handle.net/10150/216532.

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The objective of this study was to determine the optimum rate of N to maximize growth of Prosopis velutina seedlings and minimize N leaching when seedlings were grown in different substrates. Mesquite seedlings were grown in sand or soilless media and were fertigated with a solution of67 % NH₄⁺: 33 % NO₃⁻ at a rate of 25, 50, 100, or 200 mg N/L. After 60 days, plants in media produced 41 % more leaves and total biomass compared to those in sand. Leaf number was greatest for plants grown at 200 mg N/L in both substrates. Root biomass of plants in media showed no response to increasing N concent

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13

Self, Guy K. "Studies of xylopodium formation and early seedling growth in Kielmeyera coriacea Mart." Thesis, University of Edinburgh, 1989. http://hdl.handle.net/1842/14374.

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14

Carter, Sara Katherine. "TOLERANCE OF SEEDLING TURFGRASS SPECIES TO ALS INHIBITING HERBICIDES." UKnowledge, 2007. http://uknowledge.uky.edu/gradschool_theses/429.

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Acetolactate synthase (ALS) inhibiting herbicides are commonly used to eliminate weeds from mature turfgrasses. Field trials were conducted from 2004-2006, testing ALS herbicides for preemergence and early postemergence activity on newly seeded turfgrasses, using four species: Riviera bermuda, Zenith and Companion zoysia, L- 93 creeping bentgrass, and Poa annua L. Data collected were phytotoxicity and percent turf cover. Bermuda and zoysia herbicides were metsulfuron-methyl (42 g ha-1), trifloxysulfuron (29 g ha-1), flazasulfuron (53 g ha-1), foramsulfuron (30 g ha-1), bispyribac-sodium (112 g

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15

Doust, Susan Jillian. "Seed and seedling ecology in the early stages of rainforest restoration /." [St. Lucia, Qld.], 2004. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe18410.pdf.

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16

Chambers, Jeanne C. "Disturbed Alpine Ecosystems: Seedling Establishment of Early and Late Seral Dominant Species." DigitalCommons@USU, 1987. https://digitalcommons.usu.edu/etd/6370.

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This study examined the effects of seedbed and seedling environment on establishment of early and late seral dominant alpine species. Species studied included late seral dominant forbs (Geum rossii, Artemisia scopulorum, and Polemonium viscosum), early seral dominant forbs (Potentilla diversifolia and Sibbaldia procumbens), a late seral dominant grass (Festuca idahoensis), and early seral dominant grasses (Calamagrostis purpurascens and Deschampsia cespitosa). Germination responses of each species to wet vs. dry cold stratification and light vs. dark conditions were investigated. No statistica

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17

Sagra, Javier, Daniel Moya, Pedro Plaza-Álvarez, et al. "Predation on Early Recruitment in Mediterranean Forests after Prescribed Fires." MDPI AG, 2017. http://hdl.handle.net/10150/625399.

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Wildfires play a significant role in many different elements of Mediterranean forest ecosystems. In recent years, prescribed fires have started being used more often as a fuel reduction tool, and also as silvicultural treatment to help the regeneration and health improvement of stands. Apart from the fact that fire may alter microsite conditions, very little is known about the impact of prescribed burning on natural regeneration or plant species renewal in Mediterranean pine forests. Likewise, knowledge about the influence of seedling predators on post-fire regeneration is still scarce. In thi

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18

King, Janice Elizabeth. "The role of arginine and arginase in Pinus taeda L. early seedling growth." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp02/NQ34789.pdf.

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19

Hill, Steven Arthur. "The regulation of mitochondrial function during early seedling development in cucumber (Cucumis sativus L.)." Thesis, University of Edinburgh, 1990. http://hdl.handle.net/1842/14071.

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This thesis is concerned with the following areas: first, the nature of the developmental modulations in mitochondrial function, and the role of coarse control, at the level of protein synthesis, in bringing them about; and secondly, the importance of mitochondrial reactions in the regulation of cellular metabolism. Changes in respiratory physiology in developing cotyledons have been characterised and correlated with changing metabolic phases. During lipid mobilisation, carbon is diverted away from the decarboxylating reactions of the TCA cycle, whereas the capacity exists for full cycle opera

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20

Stone, Sandra Lee. "Triacylglycerol and carbohydrate metabolism in loblolly pine, Pinus taeda L., seeds during germination and early seedling growth." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape7/PQDD_0019/NQ46925.pdf.

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21

Gorim, Linda Yuya [Verfasser], and Folkard [Akademischer Betreuer] Asch. "Effects of seed coating on germination and early seedling growth in cereals / Linda Yuya Gorim. Betreuer: Folkard Asch." Hohenheim : Kommunikations-, Informations- und Medienzentrum der Universität Hohenheim, 2014. http://d-nb.info/1055990259/34.

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22

Hosseini, Mohammad Khajeh. "The response of soybean seeds to the stresses of semi-arid environments during germination and early seedling growth." Thesis, University of Aberdeen, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.324912.

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Reduced water availability and salinity are two major environmental factors influencing crop establishment in semi-arid environments. Therefore the effect of reduced water availability using polyethylene glycol (PEG) 4000 solutions and of salinity (NaCl) on the germination of six soybean cultivars was examined. Cultivars differed in their response to reduced water availability and salinity and in their ability to recover from the stresses. A large increase in germination during a recovery period at 0 MPa following water stress suggested that PEG was not toxic whilst the failure of seeds to rec

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23

Hepburn, Henry A. "Investigations into the potential use of physical-chemical properties of crop seeds as indicators of seed germinability and early seedling growth." Thesis, University of Aberdeen, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.333439.

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Electrical conductivity of soakwater was measured for individual seeds from a range of crop species. Conductivity was expected to increase with loss of germinability since deterioration is thought to degrade membrane permeability in seeds leading to increased loss of cellular contents during imbibition. Non-terminable seeds had, on average, higher soakwater conductivities per seed than germinable seeds. Heavier seeds tended to have higher conductivities per seed than lighter seeds, partly explaining overlaps between the soakwater conductivity distributions of germination categories. Re-express

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24

Mills, Samuel John Alan Restall. "Potential of exogenous L-amino acids in salinity stress alleviation during germination and early post-germinative seedling growth of Lactuca sativa L." Thesis, University of Canterbury. Biological Sciences, 2014. http://hdl.handle.net/10092/10060.

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Soil salinity is a common abiotic stress for plants, that is having an increasing impact on international food production. A practical strategy to help mitigate the adverse effects of salinity stress on crop productivity is to increase salt tolerance of crop plants. It has been shown that exogenous application of L-proline and L-glutamate is capable of reducing the severity of salinity stress on seed germination and early seedling growth of brassica and cucumber, respectively. The main aim of the present study was to investigate the potential of all 20 common protein amino acids to alleviate s

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25

Hatzig, Sarah Vanessa [Verfasser]. "Breeding for climate change : genetics and physiology of seed vigor, seedling vigor and early drought resistance in winter oilseed rape (Brassica napus L.) / Sarah Vanessa Hatzig." Gießen : Universitätsbibliothek, 2015. http://d-nb.info/108012019X/34.

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26

Bussey, Melinda Jane. "Development of a leaf disc assay for detecting resistance to early blight on potato seedlings." 1988. http://catalog.hathitrust.org/api/volumes/oclc/19062308.html.

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27

HONG, YI-KAI, and 洪怡愷. "The effects of burning treatment on soil chemical properties and the early growth of seedlings in clearcut lands." Thesis, 1986. http://ndltd.ncl.edu.tw/handle/54698969390353064460.

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28

Lee, Chia-Che, and 李佳哲. "Transcriptome analyses of differentially expressed genes and enriched pathways in ice plant seedlings at early stage of salt stress." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/q62a92.

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碩士<br>國立中興大學<br>生命科學系所<br>106<br>Soil salinization has caused considerable losses in global agriculture. Understanding the mechanism of salt tolerance is critical for improving the production of crops. Ice plant (Mesembryanthemum crystallinum) has unique responses for tolerating high salinity and is a model halophyte for studying salt tolerance. Ice plant can maintain the ion homeostasis and reduce the oxidative damage under salt stress by accumulating excessive sodium ion in the vacuole and compatible solute in the cytosol. Changes in expression profiling have been identified in ice plant und

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29

Dinger, Eric J. "Characterizing early-seral competitive mechanisms influencing Douglas-fir seedling growth, vegetation community development, and physiology of selected weedy plant species." Thesis, 2012. http://hdl.handle.net/1957/29479.

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Three studies were conducted to characterize and present early-seral competition between Douglas-fir seedlings and the surrounding vegetation communities during Pacific Northwest forest establishment. The first experiment served as the foundation for this dissertation and was designed to quantify tradeoffs associated with delaying forest establishment activities by introducing a fallow year in order to provide longer-term management of competing vegetation. A range of six operationally relevant treatments were applied over two growing seasons that included in the first (1) a no-action control,

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30

Hsieh, Wen-Ping, and 謝文蘋. "Mechanistic Studies of a Transcriptional Regulator bZIP16 in Arabidopsis Early Seedling Development." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/56791671973175918477.

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博士<br>國立臺灣大學<br>植物科學研究所<br>101<br>Plants are sessile organisms and need to adapt to the ever-changing environment for optimal growth and development. Light is one such environmental factor. In Arabidopsis, almost its entire life cycle is influenced by the light signals. Key regulators for plants to perceive and coordinate the environmental signals include photoreceptors and signaling molecules, especially transcription factors. In this thesis, a basic region/leucine zipper motif transcription factor, bZIP16, was identified by its affinity to G-box commonly present in many light-responsive gene

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31

Jabbes, Mohamed. "Evaluation of germination responses and early seedling development of selected medicago and hedysarum species." Thesis, 1991. http://hdl.handle.net/1957/37967.

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Germination strategies and early seedling development of selected Medicago and Hedysarum species were evaluated to identify plants with high potential for range rehabilitation in central Tunisia. Temperature (5°C to 25°C) and water stress (0 MPa to -0.8 MPa) affected the germination percentage of all Medicago and Hedysarum species. Water stress had a greater effect on percent germination than did temperature, however, the nature of the effect of water potential depended on temperature. Australian medics were more depressed by temperature extremes and low water potential than were Tunisian acce

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32

Chiu, Huei-Lung, and 邱輝龍. "Influence of seedling age on tomato (Lycopersicon esculentum Mill.)cplant growth and early yield." Thesis, 1994. http://ndltd.ncl.edu.tw/handle/58106904783112650790.

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碩士<br>國立中興大學<br>園藝學系<br>82<br>Greenhouse and field experiments were conducted to study the influence of seedling ages (4、6、8 and/or 10 weeks) on growth and early yield of fresh-market tomato. Older seedlings in plug tray (20ml/plug) showed bigger plant size at transplanting in all three cultivars. The root specific activity of seedlings transplanted on November 17, 1993 increased after transplanting, but the root specific activity of 4 week old seedlings transpl- anted on December 2, 1993 w

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33

Robertson, Masumi. "Effect of environment and ABA on α-amylase/subtilisin inhibitor accumulation during kernel development and early seedling growth in Hordeum vulgare L". 1989. http://hdl.handle.net/1993/16966.

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34

Robertson, Masumi. "Effect of environment and ABA on [alpha]-amylase/subtilisin inhibitor accumulation during kernel development and early seedling growth in Hordeum vulgare L." 1989. http://hdl.handle.net/1993/16966.

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35

Volk, John. "The effect of miombo and dambo soil transfers on early seedling growth of Bauhinia petersiana Bolle., Cassia spectabilis D.C., and Calliandra calothyrsus Meissn. on degraded miombo sites /." 1990. http://hdl.handle.net/1957/11197.

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36

Bloomberg, M. "Modelling germination and early seedling growth of radiata pine : a thesis submitted in partial fulfilment of the requirements for the degree of Doctor of Philosophy at Lincoln University /." Diss., 2008. http://hdl.handle.net/10182/681.

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37

Fried, Jeremy Steven. "Two studies of Acer macrophyllum : I. The effects of bigleaf maple on soils in Douglas-fir forests : II. The ecology of bigleaf maple seedling establishment and early growth in Douglas-fir forests /." 1985. http://hdl.handle.net/1957/11031.

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