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.
Results
Showing 1 to 20 of 20 for “"cactaceae"”.
-
Karyotype Evolution in the Genus Echinocereus (cactaceae)
<p>Presented to the Graduate Faculty of The Claremont Graduate School in partial fulfillment of the requirements for the degree of Master of Arts.</p>
-
Taxonomy and phytogeography of the Cactaceae of eastern Brazil
Eastern Brazil is a vast tropical area known to be rich in cactus diversity and endemism. Early explorers documented little of this due to the difficulty cacti present for preservation and description of living and museum specimens. Most taxa now known were discovered in the past 100 years, the …
-
The Comparative Anatomy of Extrafloral Nectaries in the Cactus Family (Cactaceae)
Extrafloral nectaries (EFNs) are specialized glands that unlike floral nectaries, which function primarily in pollination, are typically associated with plant defense, attracting invertebrates whose presence and activity can reduce herbivory. EFNs were first observed in cacti in 1837 and have been …
-
Plastomes of the subfamily Cactoideae (Cactaceae): genomic, structural and evolutionary aspects
The family Cactaceae represents the greatest lineage of succulent plants, which contains a set of anatomical, morphological, and physiological modifications allowing adaptation and diversification in arid and semi-arid regions. Cactoideae is the richest subfamily in species diversity within …
-
Efeito alelopático de Mesosphaerum suaveolens (L.) Kuntze (Lamiaceae) em espécies de cactaceae
… demonstra que a ausência de plantas jovens de Cactaceae em ambientes colonizados por M. suaveolens apresenta relação com o efeito alelopático dos constituintes químicos das folhas liberados durante a sua decomposição.
-
Phylogenetic studies of Tribe Cacteae (Cactaceae) with special emphasis on the genus Mammillaria
<p>The genus Mammillaria is probably the most species-rich genus in the cactus family. To date, there have been a number of infrageneric classifications of the genus, based largely on morphological data. This study utilized molecular (DNA) sequence data from two chloroplast markers (rpl16 intron …
-
Efecto analgésico de un extracto etanólico de Pereskia lychnidiflora (Cactaceae) en ratones de laboratorio
La presente investigación se realizó con el objetivo de evaluar el efecto analgésico de un extracto etanólico de Pereskia lychnidiflora en ratones de laboratorio. Se utilizaron 5 grupos, de 8 animales cada uno. Los grupos se distribuyeron de la siguiente manera: A 3 grupos se les administró el …
-
Influence of feeding-location on nutritional quality for cochineal insects (Homoptera : Dactylopiidae) on Opuntia ficus-indica (Cactaceae)
The cochineal insect Dactylopius opuntiae has been an extremely successful biocontrol agent of the cactus weed Opuntia ficus-indica. Its resounding success has allowed us to take a closer look at how the relationships between biocontrol agents and their host plants are maintained. The prickly pear, …
-
Morphological and Biochemical-based Phylogenetic Analyses of Opuntiae Prickly Pear Cacti of Southern California
… D" were also considered.</p> <p>[Key Words: Cactaceae, Opuntia, Opuntiae, prickly pears, electrophoresis, morphology, chromatography, phylogenetic analysis]</p>
-
Línea base para investigaciones palinológicas en la flora salvadoreña, caso Deamia montalvoae
… la morfología del polen de Deamia montalvoae (Cactaceae), se desarrolló mediante cuatro actividades; la “creación de una base de datos bibliográfica sobre especies de plantas visitadas por aves en El Salvador”, donde se obtuvo un listado de 204 especies de plantas (126 nativas, 77 exóticas y 1 …
-
The Role of Visual and Olfactory Cues in Host Recognition for the Specialist Bee Genus Diadasia, and Implications for the Evolution of Host Choice
… pollen from just one of five plant families: Cactaceae, Malvaceae, Onagraceae, Asteraceae, and Convolvulaceae. Assuming a common ancestor for all Diadasia specialized on just one plant, this indicates host-switches in the past, and an ability to recognize more than one flowering plant. I …
-
Kaktuszok télállósága Magyarországon
A Cactaceae család télálló fajai változatos morfológiájú, széles ökológiai amplitúdójú növények. A kaktuszok között azok a fajok, amelyek teleltetés nélkül, a szabadban tarthatók, egyre jelentősebb szerepet töltenek be a hazai díszkertészeti kínálat bővülésében. Sziklakertekben, tetőkertekben, …
-
Strategies to increase production of betalain pigments and their use as SynBio tools
… enzyme from $\textit{Carnegiea gigantea}$ (Cactaceae) in 2 L and 30 L bioreactors allowed for the biotechnological production of unsurpassed titres of betalains. Finally we used ancestral sequence reconstruction and enzyme activity assays in yeast to identify the residues important for high …
-
Uso de bases digitais biológicas na preparação de checklists: o caso das angiospermas da RPPN Serra das Almas, CE
… existence of only two collections related to the Cactaceae family, the high number of species, genera and families without identification in the records obtained, which suggests a specific need to send duplicates to specialists. Over time, there was a peak in collections in the period between …
-
Opuntia ficus-indica: a climate-resilient biomass feedstock for low-input drylands agriculture
… ficus-indica) is a rapidly growing member of the Cactaceae that thrives in semi-arid and arid regions with many beneficial traits compared to other species grown under drylands conditions. O. ficus-indica is currently used as a food crop, a forage and fodder for livestock under drought conditions, …
-
Host plant associations of two cochineal insect species, Dactylopius ceylonicus and D. opuntiae (Dactylopiidae: Hemiptera), on the invasive cactus species Opuntia monacantha, O. ficus-indica and a possible hybrid cactus, in South Africa
… in the Old World where there are no native Cactaceae. However, the ability of cochineal to use more than one host plant species has validated reports of inadvertent displacement of Dactylopius ceylonicus (the original agent released in 1913) by D. opuntiae (which was originally released on …
-
Antioxidant, Antimicrobial, and Antibiofilm properties of Opuntia stricta and Vachellia erioloba, and chemical characterization of volatile compounds
… Opuntia stricta belongs to the family Cactaceae and is found in Namibia. The plant is used in the management of diseases such as diabetes, obesity, and cancer. This study was designed to investigate the antioxidant, antimicrobial, antibiofilm activity, and chemical characterization of …
-
Contributi per il miglioramento genetico del ficodindia (Opuntia ficus indica (L.) Mill.)
… succulento appartenente alla famiglia delle Cactaceae e originario del Messico ma presente in tutto il bacino del Mediterraneo e nelle zone temperate di America, Africa, Asia ed Oceania. In Sicilia la specie ha trovato ottime condizioni pedoclimatiche che le hanno permesso di colonizzare …
-
Tecniche innovative di propagazione e di caratterizzazione di specie e varietà di Opuntia e generi affini
Le specie appartenenti al genere Opuntia e ad alcuni generi affini riscuotono crescente interesse per la loro elevata efficienza dell’uso dell’acqua che deriva dal loro particolare metabolismo; il loro utilizzo è suggerito in zone aride e semiaride non solo per la produzione di frutti ma anche per …