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Team Echinacea COVID-19 Update

Welcome to the CBG’s Evanston outpost!



In conjunction with the CBG’s current policy, the Echinacea Project’s base of operations has moved out of the Plant Science building and into our living room! The lab is closed to volunteers and staff through the month of March and potentially longer as the situation develops. Despite this hiccup, we are continuing with our work and we’re looking forward to the productivity the next few weeks will offer!

All three species are represented in this tray


Over the last few months we’ve been germinating E. angustifolia, pallida and purpurea for our investigation into Echinacea ploidy. Elif, Riley and myself have been caring for the seedlings and will be working with people at the CBG to determine how we can maintain an appropriate watering schedule and safe social distancing practices.

Fingers crossed the little guys can hang in there til we get a schedule worked out!

Though our ACE head processing protocol is on hold for the foreseeable future, our excellent volunteer force has made great progress in 2020. We’re about 3/4s through cleaning the 2018 heads. Our counters are overflowing with cereal boxes of achene envelopes and with help from the volunteers, Riley cleared up some space by moving our 2015 achenes into the Dixon National Tallgrass Prairie Seed Bank (fancy title for “that big freezer on the other side of the building.”) We’ll be moving 2016 in there too when we return!

There’s plenty of work for us to do outside of the lab, so fear not our idle hands! Riley’s looking ahead to the 2020 field season by preparing for measuring in our common gardens. He’s working on a snappy measuring field checks function to hopefully streamline a process which took us a lot of time in Fall 2019.

Currently I’m working on uniting our 2019 demo and surv records in demap. First I tackled our largest 2019 flowering site (Aanenson,) and now I’m working through sling sites to hopefully have maternal plant data ready for our collaborative sling project.

The superteam of Team Echinacea members and alums working on sling in 2019/20 is hopeful about making some great progress in the coming weeks. Perhaps this cross-country collaboration was the original social distancing initiative? Video calls are the hip new quarantine hangout these days, so we were ahead of the curve on that front!

comfy!
classy!


Since we’re now the masters of the office dress code, we’ve been stretching our fashion wings. I’ve busted out my favorite slippers and jeans, and Riley’s switching up his hat game from baseball to brimmed. Check back in with us in a few weeks– we’re working on getting our Spring 2020 collection ready for debut!

2019 Update: Pollen addition and exclusion

Supplemental pollen — pollen that an Echinacea head might not otherwise receive—could increase a plant’s fitness. But does this extra pollination lead to a tradeoff in survival or flowering consistency? Since 2012, we have been manipulating the amount of pollen Echinacea plants receive – either no pollen, or lots of pollen – and recording how this affects their fitness and survival. In 2012 and 2013 we identified flowering E. angustifolia plants in experimental plot 1 and randomly assigned one of two treatments to each: pollen addition or pollen exclusion. The team bagged the heads of all plants and hand-pollinated the addition treatment, and did not manipulate the exclusion plants further. Plants receive the same treatment across years.

In summer 2018, 14 of the 26 plants alive in the pollen addition and exclusion experiment flowered, producing a total of 25 heads. This year none of those plants flowered. Of the original 38 plants in this experiment, 12 of the exclusion plants and 14 of the pollen addition plants are still alive. No plants died between 2018 and 2019. This year’s data were unique among the eight years of data collected, because not a single plant in the experiment produced even a single head. The dramatic decrease in flowering rates this year may help or hinder us in analyzing this data set and providing answers to this eight-year question.

Tris did not find significant demographic differences between plants which received pollen exclusion, addition or open pollination treatments.

Start year: 2012

Location: exPt1

Physical specimens: We harvested no specimens this year

Data collected: Plants survival and measurements were recorded as part of our annual surveys in P1 and can be found with the rest of the P1 data in the R package EchinaceaLab.

Michael presented a poster on the polLim experiment at MEEC 2019, which you can find here

Tris also presented a poster on polLim at MEEC 2019, which you can find here

You can find more information about the pollen addition and exclusion experiment and links to previous flog posts regarding this experiment at the background page for the experiment.