Huang, Shaoming .
Characterizing the cross of CDC Sage and CDC Centennial field pea for heat resistance through flowering duration .
Field pea as a cool season legume crop is extremely sensitive to high day temperature especially during flowering. The amount of seed per plant decreases drastically when temperatures exceed 30C for 1 to 3 days during flowering. To date, we have generated a RIL population PR-11, from the cross of heat susceptible cultivar CDC Sage and heat resistant cultivar CDC Centennnial, which has variation in flowering date and flowering duration. Our first goal was to characterize the physiological mechanisms associated with heat-induced yield production and identify physiological traits in PR-11 for drought escape through early flowering, and drought avoidance through prolonged flower duration in order to fit a warming climate. Our second was to identify some quantitative loci associated with these desirable traits for heat stress tolerance. So far, we have collected phenotypic data for flower date and duration, pod and seed number per plant and seed weight from 2011 to 2014. Results of mapping these traits and their related QTLs will be presented.
1 - U of S, Plant Science, F0543-51 Campus Drive, Saskatoon, Saskatchewan, S7N 5A8, Canada
Presentation Type: Poster:Posters for Sections
Candidate for Awards:None