Abstract Detail

Phytochemical

Mason, Chase [1], Dowell, Jordan [2], Stahlhut, Katherine [3], Hart, Austin [4], Goolsby, Eric [4].

Breeding pool differentiation in phytochemistry, ecophysiology, and microbial interactions within cultivated sunflower (Helianthus annuus).

Crop breeding practices can contribute to divergence among portions of primary gene pools. Most often, this is driven by differentiation of the crop into distinct market classes or types where particular traits are emphasized. In the present work, we highlight how use of cytoplasmic male sterility to achieve heterosis may have contributed to divergence between the dominant restorer and maintainer breeding pools in crop sunflower. Examining data from multiple experiments, we describe variation in secondary metabolism, especially flavonoids and sesquiterpene lactones, variation in leaf ecophysiological traits predictive of growth rate, variation in height-based growth rate, and variation in colonization by arbuscular mycorrhizal fungi. Differentiation in plant functional traits due to historical and ongoing breeding practices can help explain trajectories of change over time in elite crop germplasm over time, and may inform efforts to understand and improve plant biotic interactions.

Related Links:
Mason Lab Website

1 - University Of Central Florida, Department Of Biology, 4110 Libra Dr, Orlando, FL, 32816, United States
2 - 11160 Sylvan Pond Circle, Orlando, FL, 32825, United States
3 - UCF, Biology, 4110 Libra Dr, Orlando, 32816, United States
4 - University of Central Florida, Department of Biology, 4110 Libra Drive, Orlando, FL, 32816, USA

Keywords:
sunflower
Helianthus
secondary metabolites
HPLC
leaf economics
ecophysiology
growth
Mycorrhizae
flavonoid
sesquiterpene
breeding
genetic diversity.

Presentation Type: Oral Paper
Session: PHYT1, Phytochemistry I
Location: /
Date: Tuesday, July 20th, 2021
Time: 11:30 AM(EDT)
Number: PHYT1007
Abstract ID:307
Candidate for Awards:None