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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 19 of 19 for “"Leaf anatomy"”.
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Seasonal changes in specific leaf weight and leaf anatomy of apple
… had significant and similar effects on specific leaf weight (SLW), leaf thickness, length of palisade tissue, and number of cell layers in the palisade tissue. Inside canopy leaves had lower SLW, leaf thickness, palisade length, and number of palisade cell layers than middle and outside leaves at …
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Systematic implications of leaf anatomy and palynology in the Disinae and Coryciinae (Orchidaceae)
… of 8 species (TEM), 86 species (SEM), and leaf anatomy of 62 species (LM), were surveyed in the Oisinae, Coryclinae and, as outgroup taxa, the Orchideae and Satyriinae. Characters extracted from observations made of leaf anatomy and pollen were analysed using cladistic methods, and assessed …
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The Effect of Elevated Carbon Dioxide and Ozone on Soybean Development, Leaf Anatomy and Productivity
Leaf area is significantly reduced in elevated [O3]; however, it is significantly increased in elevated [CO2]. This increase in leaf area, along with the increased number of main stem nodes, result in the previously reported increase in leaf area index observed in soybeans grown in elevated [CO2]. …
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Systematics, Biogeography and Leaf Anatomy and Architecture of Bursera subgen. Bursera (Burseraceae) in the Greater Antilles and the Bahamas
… chapter presents informative characters from leaf anatomy and leaf architecture for the 14 endemic species of <em>Bursera</em> distributed in the GAB. There is evidence for some evolutionary tendencies in the group, among them a trend toward small, simple, amphistomatic and unifacial leaves, …
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Ultrasonic energy as a cleaning agent and its influence on the respiratory activity and leaf anatomy of Brassica Oleraceae var. Acephala
This investigation was undertaken to determine the effectiveness of ultrasonic energy in removing spray residue from collards, to determine its effect on the content of ascorbic acid and carotene levels in the treated tissues, and to investigate the influence of ultrasonic energy on the respiratory …
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A taxonomic revision of the spiny members of subfamily celastroideae (Celastraceae) in Southern Africa
… is presented. Evidence from macromorphology, leaf anatomy, ecology and phytogeography is used as a basis for classification. The genus Gymnosporia (Wight & Am.) Hook. f. is reinstated, deviating from Maytenus by the presence of spines and brachyblasts, dichasial inflorescences, and mainly …
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Systematic studies in the genus Bulbinella Kunth (Asphodelaceae)
… seedling development, pollen structure, leaf anatomy, geographical distributions and ecology. is reviewed. Previous work on breeding biology. A comparison of the systematics of Bulbinella in South Africa and New Zealand is followed by some discussion on this unique disjunct distribution. …
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Ecophysiology of Barrier Island Beach Plants: Responses in Form and Function to Daily, Seasonal and Episodic Stresses
… present on Topsail Island, North Carolina (USA). Leaf stomatal frequency measurements, microscopic examination of internal leaf anatomy and photosynthetic light response measurements of Amaranthus pumilus, Cakile edentula, Hydrocotyle bonariensis and Iva imbricata were made in an effort to test …
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Taxonomia e anatomia de cinco espécies do gênero Maytenus (Celastroideae - Celastraceae) ocorrentes no Brasil
… of these species includes descriptions of leaf anatomy and external morphology. Pertinent comments about the morphology, taxonomy, geographic distribution and habitat are presented along with illustrations and a key to identify each of the five species. Anatomical studies, when combined …
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Studi karakteristik trikoma pada beberapa galur kedelai (Glycine max L.) toleran dan peka terhadap serangan ulat grayak Spodoptera litura F. (Lepidoptera: Noctuidae)
… passing morphology characteristic selection and leaf anatomy. Characteristic leaf of soybean have close relation with resistant to insect, anticipated by closeness trikoma of leaf can hinder suction process or intake of food gist by grayak. This research purpose to know intensity damage of leaf …
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The influence of the evolution of anatomical characters on leaf hydraulic capacity
… to have driven evolutionary changes in plant leaf anatomy, enabling plant leaves to adapt to declining atmospheric [CO2] over the last 120 million years. This thesis aimed to study the effect varying anatomical characters had on plant leaf function in different taxa. Atmospheric [CO2] at the …
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Phylogenetic Analysis of the Genus Pistacia (Anacardiaceae)
… different types of data (including morphology, anatomy and molecular) The studied species were the following: Pistacia aethiopica J. O. Kokwaro, P. atlantica Desf., P. chinensis Bunge, P. eurycarpa Yaltirik, P. falcata Becc. ex Martelli, P. integerrima Stew. ex Brand., P. khinjuk Stocks, P. …
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Efficiencies of Mass Encapsulation in Alginate of Vegetative Explants
… acclimatization to greenhouse environment, and leaf anatomy comparisons. Nodal segments, each containing a single axillary bud, were harvested and cut to 4mm prior to mass encapsulation. Results showed that using 2.75% alginate with a concentration of 60 or 80 mM calcium chloride produced an …
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Engineering a Reverse C4 Photosynthetic Pathway in C3 species Arabidopsis thaliana
… biochemical pathway but make use of the native leaf anatomy of C3 species. The main objective of this thesis was to test if introducing a reverse C4 photosynthetic pathway in C3 Arabidopsis thaliana could improve its photosynthetic efficiency. Two subtypes of the C4 biochemical pathway, the …
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Understanding C4 Photosynthesis Through Quantitative Genetics
… changes to their biochemistry, cell biology and anatomy. Quantitative genetics offers an under-explored route to identify regulators of these processes. Taking advantage of the natural variation present for C4 characteristics in the dicotyledon Gynandropsis gynandra, this thesis aims to carry out …
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Vegetative Anatomy of Rhododendron with a Focus on a Comparison between Temperate and Tropical Species
… habitats. The focus of this work was to explore leaf and stem anatomical traits in relation to habitat (temperate and tropical) and elevation of the native range. A closely-related group of Rhododendron was selected to reduce variation in genetic history and reveal environment–associated adaptive …
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ΔΟΜΙΚΗ ΑΝΑΛΥΣΗ ΤΗΣ ΣΚΛΗΡΟΦΥΛΛΙΑΣ ΣΕ ΑΕΙΦΥΛΛΑ ΕΙΔΗ ΤΗΣ "ΜΑΚΚΙΑΣ" ΒΛΑΣΤΗΣΗΣ
MORPHOLOGICAL, ANATOMICAL AND ULTRASTRUCTURAL INVESTIGATION OF THE HARD LEAL CORRELATED TO CONVERGENT EVOLUTION. ELEVEN SPECIES OF THE GREEK CHAPARRAL WERE STUDIED CONCERNING THE ANATOMICAL EXPRESSION OF THEIR ADAPTIVE STRATEGIES.