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 7 of 7 for “"seedling performance"”.
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Development of a Greenhouse Tobacco Seedling Performance Index
Tobacco seed performance is traditionally measured as percentage germination at 14 d under controlled laboratory conditions. However, under greenhouse conditions, seed lots with equal 14-d germination may exhibit substantial differences in uniformity of early seedling growth and spiral root …
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El papel facilitador o inhibidor de Pinus Pinea L. Sobre especies autóctonas de matorral mediterráneo
… on several aspects: (1) seed germination and seedling performance of three Mediterranean shrubs (Cistaceae family), (2) study of the decomposition processes of various life forms at the study site, (3) intensity of competition between seedlings of P. pinea, C. salvifolius and P. lentiscus …
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The Influence of Dense Understory Shrubs on the Ecology of Canopy Tree Recruitment in Southern Appalachian Forests
… Many studies have investigated the causes of seedling inhibition beneath dense shrub understories, but few have uncovered specific mechanisms leading to seedling decline. In this study, I have examined the influence of the evergreen understory (R. maximum and Kalmia latifolia L.) on tree …
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An Experimental Assessment of Soil-Based Habitat Partitioning in Understory Palms
… the mechanistic basis of these patterns using seedling transplant experiments. My research showed that while spatially limited seed dispersal may influence palm species distribution patterns, soil nitrogen and base cation availability and soil texture were also important in influencing species …
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Performance of northern red oak (Quercus rubra) underplantings under five management regimes and across existing environmental gradients
… Plateau. The direct relationships between seedling performance and light as well as light and stand structure are also addressed. Seedling growth and survival are found to be driven by a combination of factors. The interaction of physiographic province and management regime exerted a …
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Another look at the savannah conundrum : evidence of niche segregation and competition avoidance with grasses in establishing trees
… trees and grasses, where the focus should be on seedling establishment and survival rather than biomass accumulation This study investigated the natural levels of tree establishment amongst differing amounts of grass as we sought to identify the limitation, both aboveground for light and …
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NAC transcription factors in sugarcane and their functional role in drought tolerance
… mechanisms by which VuNAC1 improved transgenics’ performance motivated the search for functionally similar NAC genes in sugarcane. Database and phylogenetic analyses identified ShNAC23 as a putative VuNAC1 orthologue implicated in drought and cold responses. Quantitative real-time PCR confirmed …