Abstract
Silflower (Silphium integrifolium Michx.) has been identified as a candidate for domestication as a perennial oilseed crop. In order to successfully domesticate silflower it will be necessary to identify traits that should be targeted for selection. We have conducted the first multilocation trial of replicated silflower genotypes at six sites across four states. By observing architectural, phenological, and yield traits in a diversity panel of silflower breeding material, we were able to estimate the heritability of these traits, as well as patterns of correlation across years and environments. We found that this population expressed heritable variation for many, but not all, traits of interest, and that targeted introgression of diversity may be beneficial for some traits. In addition, we used regression analysis to identify several traits, particularly height, number of stalks per plant, and stalk diameter as important contributors to determining levels of yield and levels of lodging. These results will help to guide future silflower domestication efforts and have already shaped the direction of our breeding program.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 1443-1460 |
| Number of pages | 18 |
| Journal | Crop Science |
| Volume | 62 |
| Issue number | 4 |
| DOIs | |
| State | Published - Jul 1 2022 |
Bibliographical note
Funding Information:Funding for this work was provided by The Perennial Agriculture Project in conjunction with The Land Institute and the Malone Family Land Preservation Fund, the United States Department of Agriculture's National Institute of Food and Agriculture Grant no. 2019‐67011‐29607, the Minnesota Department of Agriculture‐Forever Green Agricultural Initiative. The authors thank Dr. James Bever of the University of Kansas for hosting the Lawrence site, Dr. Russell Jessup of Texas A&M University for hosting the College Station site, and the staff of the Northwest Research and Outreach center for hosting the Crookston site. In addition, the authors thank the numerous students and technicians at each site who participated in planting, management, data collection, and harvest for this experiment.
Funding Information:
Funding for this work was provided by The Perennial Agriculture Project in conjunction with The Land Institute and the Malone Family Land Preservation Fund, the United States Department of Agriculture's National Institute of Food and Agriculture Grant no. 2019-67011-29607, the Minnesota Department of Agriculture-Forever Green Agricultural Initiative. The authors thank Dr. James Bever of the University of Kansas for hosting the Lawrence site, Dr. Russell Jessup of Texas A&M University for hosting the College Station site, and the staff of the Northwest Research and Outreach center for hosting the Crookston site. In addition, the authors thank the numerous students and technicians at each site who participated in planting, management, data collection, and harvest for this experiment.
Publisher Copyright:
© 2022 The Authors. Crop Science published by Wiley Periodicals LLC on behalf of Crop Science Society of America.
