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Full-Text Articles in Life Sciences
Bioprospecting For Improved Floral Fragrance In Wild Sunflower, Jason Anandappa
Bioprospecting For Improved Floral Fragrance In Wild Sunflower, Jason Anandappa
Honors Undergraduate Theses
The cultivation of crop sunflower or Helianthus annuus is a 20 billion USD industry globally. Crop wild relatives of H. annuus have a long history of being used to breed improved traits into cultivated varieties. Cultivated H. annuus is not known to have a pleasant aroma, and at times seed yield is limited by pollination services, particularly in the production of hybrid seed. Improved floral fragrance could improve pollinator attraction and would add value to ornamental sunflowers in the context of the cut-flower industry. If volatile organic compounds that together generate favorable scents are present in wild Helianthus species, they …
Genetic Control Of Arbuscular Mycorrhizal Colonization In Helianthus Annuus, Katherine Stahlhut
Genetic Control Of Arbuscular Mycorrhizal Colonization In Helianthus Annuus, Katherine Stahlhut
Honors Undergraduate Theses
Plant symbiosis with arbuscular mycorrhizal (AM) fungi provides many benefits for plants, including increased nutrient uptake, drought tolerance, and belowground pathogen resistance. In order to have a better understanding of the genetic architecture of mycorrhizal symbiosis, we conducted a genome-wide association study (GWAS) by phenotyping a diversity panel of cultivated sunflower (Helianthus annuus) for root colonization under inoculation with the AM fungus Rhizophagus intraradices. This mapping panel consists of 261 inbred lines that capture approximately 90% of the genetic diversity present in the cultivated sunflower germplasm. Using a mixed linear model approach with a high-density genetic map, we …