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Magnolia: Impact Of Interspecific Hybridization On Genetic Variation And Ongoing Breeding Initiatives, James Kevin Parris
Magnolia: Impact Of Interspecific Hybridization On Genetic Variation And Ongoing Breeding Initiatives, James Kevin Parris
All Dissertations
The genus Magnolia comprises over 250 species naturally occurring in Eastern North America, Central America, South America, islands of the Gulf of Mexico, and Eastern Asia. A long history of cultivation and breeding going back to the early nineteenth century reveals a common trend of reproductive compatibility throughout this group of basal angiosperms. Interspecific hybridization has led to plethora of ornamental cultivars that have proven adaptable to natural and cultivated habitats beyond the range of each species. Understanding of taxonomic relationships between species has evolved as observations of morphological characteristics and genetic analyses have been more thoroughly investigated. The objectives …
Examination Of Carbon Assimilation And Nutrient Movement In Peach Trees (Prunus Persica (L.) Batsch) As A Result Of Variable Fall Climate, Brian Tyler Lawrence
Examination Of Carbon Assimilation And Nutrient Movement In Peach Trees (Prunus Persica (L.) Batsch) As A Result Of Variable Fall Climate, Brian Tyler Lawrence
All Theses
Deciduous fruit tree production worldwide may need to alter management strategies due to an increase of variable climate conditions. These include warmer than average temperatures during the year along with too much or little water during the growing season. Predicting best practices for orchard management will require a thorough understanding of how temperatures and soil moisture alter carbon acquisition and nutrient movement in trees, especially during the end of the growing season when tree reserves are accumulated for the following spring. Over two consecutive years, the effect of warmer fall temperatures, which delayed natural leaf senescence, and variable soil moisture …