PROJECT SUMMARY
Project title: Measurements And Modeling Of Gene Flow In Horseweed (Conyza Canadensis)
PD: Wang, Junming
CO-PD: Stewart, Charles Neal
The overall goal of the project is to develop an internet decision tool and provide data through experiments and modeling that can be used by regulatory agencies, the industries, farmers and the general public about the potential gene flow (pollen and seed dispersion, deposition and outcrossing) from round-up resistance horseweed and to offer guidelines for the prevention of gene flow under different meteorological and environmental conditions. The detailed objectives are: 1) to quantify the gene flow for horseweed; 2) to quantify the effects of atmospheric variability and different buffer zones/plants on gene flow; 3) to develop and evaluate local and regional atmospheric gene flow models; 4) to apply the models under different horseweed source sizes and atmospheric conditions and provide gene flow data for gene biocontainment (e.g., buffer type and size) for use by management agencies and stakeholders; and 5) to adapt these models into a user-friendly internet tool (GoogleEarth Map based). Once developed, this tool could be adapted to other plant species. Horseweed field experiments (dynamic pollen and seed production and release, short and long distance transport and deposition and outcrossing) will be conducted and will provide data for the model development and validation. The interfaces and framework of our existing online tool for plant water use will be adapted and modified for this gene flow tool.
REFEREED PAPERS:
Liu, Chao, Li Fu*, Dan Yang, David R. Miller, Junming Wang*.2014. Note on Pearson Lagrangian Stochastic Model for non-Gaussian Turbulent Velocities Simulation.Environmental Science and Technology. Under review.
Huang, Haiyan, Rongjian Ye, Meilan Qi, David R. Miller, Xiangzhen Li, C. Neal Stewart, David W. DuBois, and Junming Wang*.2014. Horseweed (Conyza canadensis) atmospheric pollen emission, dispersion, and deposition. Journal of Ecology. Under Review.
Huang, Haiyan, Rongjian Ye, Meilan Qi, David R. Miller, Xiangzhen Li, C. Neal Stewart, David W. DuBois, and Junming Wang*.2014. Horseweed (Conyza canadensis) gene flow through atmospheric seed emission, dispersion, and deposition. Journal of Ecology. Under Review.
Qi, Meilan , Haiyan Huang, Rongjian Ye, Xiangzhen Li, David R. Miller, David W. DuBois, Junming Wang*, and C. Neal Stewart.2014 . Assessing Atmospheric Pollen Dispersion and Gene Flow from Herbicide-resistant Horseweed. Journal of Ecology. Under Review.
CONFERENCE PRESENTATIONS:
Conference Poster (2014): Haiyan Huang, Rongjian Ye, Yanhui Peng, Charles Neal Stewart, David Dubois, and Wang Junming*. Measurements and modeling of atmospheric gene flow in horseweed. 2014 JGI meeting. Marriott Hotel, Walnut Creek, CA. March 18-20, 2014.