Mark L. Bernards and Dr. Von D. Jolley, Agronomy and Agriculture Iron is an essential nutrient for healthy plant growth. Dicotyledenous plants respond to insufficient iron with a variety of mechanisms. For example, they may release hydrogen ions or exude reductants (such as caffeic acid) from the roots to acidify the rhizosphere, reduce Fe 3+ […]
Understanding the Genomic Evolution of Avena
Jeremy K. Beard and Dr. Eric Jellen, Agronomy and Horticulture Previous studies have shown that chromosomal rearrangements largely influence changes in the genetic information found in the genus Avena (oat). Examinations of approximately 90 accessions of A. sterilis, the wild ancestor of A. Sativa and A. byzantina, using C-banding and molecular genetic markers previously revealed […]
ELK-WILLOW INTERACTIONS IN YELLOWSTONE’S NORTHERN RANGE
Stuart C. Wooley and Dr. Rex G. Cates, Botany & Range Science In the last century an alarming decrease in willow (Salix spp.) populations and stature has occurred in the northern range in Yellowstone National Park (YNP) (Singer et al. 1994). The reasons for these declines have been heavily debated, and no consensus has been […]
Soil Resources of the Ancient Maya in the Petexbatún Region of Guatemala, Delineated by Soil Properties and Stable Isotopes
David R. Wright and Dr. Richard E. Terry, Plant and Animal Sciences The Maya culture of Mesoamerica has always been shrouded in mystery, much of which surrounds its tremendous rise and (yet) unexplained fall. The Maya managed to sustain enormous populations in an environmentally fragile setting. Like all cultures throughout history, the Maya culture prospered […]
THE LICHEN FLORA OF STONY PASS, AN ALPINE TUNDRA SITE IN SOUTHWESTERN COLORADO
Samuel B. St. Clair and Larry L. St. Clair, Botany and Range Science Lichens are two organisms (alga, and fungus) that live in a symbiotic relationship. The algae provides energy for the fungus and the fungus protects the algae. Between 1874 and 1992 several sites along the front range of Colorado were examined for lichen […]
Discovering Ancient Human Activities in Rural Maya Settlements: Soil Chemical Analysis of Ruins in Yucatán, México
Carmen Lopez and Dr. Richard E. Terry, Plant and Animal Sciences For many decades, scientists have been amazed by the magnificence of the Ancient Maya culture. Mayapan is a Postclassic (900-1500 A.D.) Maya city in the Yucatán Península that covers an area of 4 square km. It was the capital of the Postclassic Maya kingdom […]
SNP Discovery in Quinoa
Nathan Coles and Dr. Craig E. Coleman, Deparment of Plant and Animal Sciences Quinoa (Chenopodium quinoa, Willd) is an allotetraploid plant species native to the Andean highland regions from Colombia to Argentina. Quinoa has traditionally been and still is an important staple grain of various Andean communities, especially those in the rural and impoverished regions […]
FINDING A SEX-LINKED MARKER IN OSTRICHES USING RANDOM AMPLIFIED POLYMORPHIC DNA (RAPD) TECHNIQUES FOR GENDER DETERMINATION
Chris Shaw and Dr. Robert Park, Zoology In recent years, ostriches have been used more frequently by ranches to fill the market demand for low fat meat, exotic leather and different oils for lubrication. As the numbers of ostriches have increased, the demand for a reliable way to determine the gender of young ostriches has […]
The Maya Defensive Earthworks and Agricultural Land Use of Tikal
Ryan Sweetwood and Dr. Richard Terry, Plant and Animal Science Concurrent with the settlement surveys and excavations, Soil scientist from Brigham Young University and from Guatemala examined 62 soil profiles and collected soil samples for analysis at the Brigham Young University soil and plant analysis laboratory. The samples are currently being characterized for physical and […]
Identification of Resistance Gene Analogs in Chenopodium Quinoa
Maria C. Sederberg and Dr. P. Jeff Maughan, Plant and Animal Sciences Chenopodium quinoa is an important but under researched crop and is the main source of sustenance for subsistence farmers in the Andes Mountains. The resources needed to bring quinoa up to par with well-researched and well-utilized crops, such as maize and wheat are […]
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