63rd Annual Maize Genetics Meeting Program and Abstracts March 8 – March 12, 2021 2nd Virtual Maize Meeting Facilitated in partnership with This conference received financial support from: National Science Foundation Corteva Agriscience, Agriculture Division of DowDuPont Bayer BASF Syngenta NCGA KWS We thank these sponsors for their generosity! A special thank you for the in-kind support from the USDA-ARS. ii Table of Contents Cover Page ................................................................................................................... i Contributors ................................................................................................................. ii Table of Contents ......................................................................................................... iii General Information ..................................................................................................... iv From the Maize Genetics Cooperation............................................................................ vi Introducing the Committee on Outreach, Diversity, Inclusion & Education (CODIE)...viii Financial Aid Awards ......................................................................................................viii Data Management Made Simple...................................................................................... xi Program ........................................................................................................................ 1 List of Posters .............................................................................................................. 9 Abstracts: Plenary Addresses ................................................................................................... 19 McClintock Awardees................................................................................................ 24 Short Talks .............................................................................................................. 26 Posters ..................................................................................................................... 59 Author Index ........................................................................................................... 178 Participants .................................................................................................................... 187 History........................................................................................................................... 219 Cover image description Hand-drawn logo consisting of different major maize organs, using motifs of the art of the indigenous peoples of Mesoamerica, including the Maya, Mixtec Zapotec, Mexica and Nahuas, by whom maize was domesticated and dispersed. Cover art by Dr. Thai Dao Department of Botany and Plant Pathology, Oregon State University, Corvallis, Oregon USA iii General Information Meeting Etiquette: Sharing of unpublished data The Maize Meeting is a respected forum for presentation and discussion of unpublished material. For this virtual format there are no privacy guarantees beyond that of an in-person meeting. Photographing, screenshots, downloading, or recording of talks and posters is not permitted. All poster images, poster videos and talk recordings will be accessible only by registered meeting attendees who have access to the password-protected site. Please honor the Maize Genetics community’s long-standing tradition of sharing unpublished data without concern of inappropriate distribution. Poster and Talk Viewing All posters are available for viewing as clickable images from the list of posters on the virtual meeting SwapCard platform. Viewing posters: Go to the Posters tab on the virtual meeting site. Click a poster title to access a page for that poster. Many poster authors have provided a lightning video, which will automatically begin playing upon selecting a poster title. To view a static image of the poster, click “See Poster in Detail” and a new window will open to display the poster. Questions or comments can be posted at any time using the Chat function in the “Live Discussion” box on the righthand side of the poster page in the virtual platform. Because attendees are joining the conference from many time zones, responses may not be immediate. Daily poster sessions (Monday to Thursday) are scheduled for poster viewing, for posting questions and comments in the “Live Discussion” box and for connecting with poster presenters via 10-minute individual meetings. Arranging 10-minute meetings during Poster Sessions: To arrange a meeting with a poster presenter, click on the poster of interest. Scroll to the “Speakers” heading and click on the name of the poster presenter, which will redirect you to the person’s profile page. Scroll to the “Meet [Attendee’s Name]” section, and select “See more slots”. Identify the time slots that fall within the poster session at which you wish to connect and select a 10-minute slot. By selecting a time slot, it will automatically be added to My Event for both you and the for the poster presenter. Poster presenters should be sure to modify their availability to reflect the times they are available for meetings, including during poster sessions (e.g. if you are unavailable due to time zone differences). This can be done by selecting the “My Event” tab, and selecting “My Meetings” on the left-hand navigation. All attendees are default selected as available for anytime talks are not in session. All poster images and videos are available for viewing by registered attendees at any time during the March 8-12 meeting, as well as for one month following the conference. Asynchronous talk viewing: All live talks will be recorded and will be posted within 24 hours after the presentation, allowing for asynchronous viewing to accommodate our global community. Questions can be posted in the chat box accompanying the video and will be monitored by the presenter. Alternatively, you may select to directly message the presenter or arrange for an individual meeting. All recordings will be available at the virtual meeting platform for at least one month following the conference. iv Virtual Maize Genetics Meeting platform Our 2021 virtual meeting is being hosted on the SwapCard platform. Each meeting registrant will receive a personalized invitation email sent by SwapCard ([email protected]). If this invitation has not arrived or if you are having issues accessing the site, please go to https://app.swapcard.com/login and enter the email address that you used when registering for the Maize Genetics Meeting. This will generate a sign-in email. If you have issues upon entering the meeting site on Swapcard, please access the Support Zoom Room on Monday, 3/8 during either of the two conference blocks that day. If you are still experiencing issues, please email [email protected]. Virtual Networking and Socializing Socializing and networking can occur via the Gather.Town platform, that can be accessed by clicking the “Social Networking in GatherTown” button on the home page of the virtual conference platform. Daily Networking and Socializing times are noted in the meeting schedule. This platform allows for virtual mingling via video chat. A quick guide for navigating the Gather.Town platform and socializing with friends and colleagues can be found upon entering Gather.Town. The Gather.Town platform will be available for networking from 12pm-4pm CST and 8-12pm CST (unless otherwise noted on the schedule) on Monday through Thursday, and 12pm-1pm CST on Friday. Steering Committee A post-meeting survey will be sent out for you to share your feedback, or you may directly share your suggestions and comments about the meeting with the 2021 Steering Committee. Marna Yandeau-Nelson, Chair...........([email protected]) Ex officio: Erin Sparks, Co-chair.........................([email protected]) Carson Andorf - MaizeGDB Madelaine Bartlett…………………..([email protected]) David Braun – Treasurer Mei Guo..............................................([email protected]) Darwin Campbell – Meeting Planning Matthew Hufford……………………([email protected]) John Portwood - Abstract Coordinator Todd Jones ..........................................([email protected]) Marty Sachs - Maize Meeting Guru Hilde Nelissen.....................................([email protected]) Jeff Ross-Ibarra ..................................([email protected]) Maud Tenaillon……………………...([email protected]) Clint Whipple………………………..([email protected]) Yongrui Wu ........................................([email protected]) Acknowledgements Many thanks go to John Portwood, Carson Andorf, and the MaizeGDB staff from the USDA-ARS, as well as Darwin Campbell (Iowa State University) for their tremendous efforts in organizing, assembling, and advertising the conference program. We also greatly thank Carrie Good and her team at ConferenceDirect, and Ian Popewitz and Lynne Navis from the Alliance of Crop, Soil, and Environmental Science Societies (ACSESS) for helping to organize and implement the virtual conference platform, handling registration and dealing with a multitude of other issues. Thanks go to Mei Guo and Todd Jones for their efforts in securing funding to offset meetings costs. Finally, many, many thanks go to the Steering Committee for organizing the 2nd virtual Maize Genetics Meeting. v From the Maize Genetics Cooperation Board of Directors: Maize Genetics Awards: The 2021 M. Rhoades Early Career Awardee: