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 2015 measuring qGen1: finding EA in a sea of flowering big bluestem! The qGen1 (quantitative genetics) experiment investigates the heritability of traits in Echinacea angustifolia. During the summer of 2002 we crossed plants from the 1996 & 1997 cohorts of exPt1. We harvested heads, dissected achenes, and germinated seeds over the winter. In the Spring of 2003 we planted the resulting 4468 seedlings (this great number gave rise to this experiment’s nickname “big batch”). In 2015 we assessed survival and fitness measures of the qGen1 plants. Here’s a summary of what we found:
| living |
flowering |
headCount |
| 2319 |
409 |
793 |
Read more about the qGen1 experiment.
Start year: 2003
Location: exPt1
Experimental plot 1 (P1) encompasses 11 different experiments originally planted with a total of 10673 Echinacea individuals. These experiments include long-term studies designed to compare the fitness of Echinacea from different remnant populations (“EA from remnants in P1”), examine the effects of inbreeding on plant fitness (“INB” and “INB2”), and explore other genetic properties of Echinacea such as trait heritability (“qGen”). In 2014, Team Echinacea measured plant traits for the 5409 Echinacea plants that remain alive and followed the daily phenology of 567 flowering heads. Echinacea began producing florets on July 1 and continued flowering in P1 until August 24. The data collected in 2014 will allow us to estimate the heritability of various traits and assess the lifetime fitness of plants from the numerous experiments.
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Experiment |
Year planted |
# alive |
# flowering |
# planted |
| 1 |
1996 |
1996 |
314 |
115 |
650 |
| 2 |
1997 |
1997 |
270 |
57 |
600 |
| 3 |
1998 |
1998 |
32 |
3 |
375 |
| 4 |
1999 |
1999 |
542 |
106 |
888 |
| 5 |
1999S |
1999 |
297 |
37 |
418 |
| 6 |
SPP |
2001 |
318 |
14 |
797 |
| 7 |
Inbreeding |
2001 |
221 |
15 |
557 |
| 8 |
2001 |
2001 |
170 |
11 |
350 |
| 9 |
Monica 2003 |
2003 |
28 |
3 |
100 |
| 10 |
qGen |
2003 |
2501 |
122 |
4468 |
| 11 |
INB2 |
2006 |
716 |
41 |
1470 |
Start year: 1996
Location: experimental plot 1
Products:
Overlaps with: aphid addition exclusion, Pamela’s functional traits, pollen longevity, pollen addition exclusion
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