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Project status update: Heritability of fitness–qGen2 & qGen3

Pollen vials from Landfill sire 403 used in qGen3 crossing 2015

Pollen vials from sire 403 used in qGen3

The goal of the qGen2 and qGen3 experiments is to compare the evolutionary potential of two remnant prairie populations of Echinacea angustifolia by estimating the additive genetic variance of fitness under two mating scenarios: crosses performed within the core sites (core x core) and crosses performed between the core site and nearby sites (core x periphery). Additionally, we will test for differentiation among families; do progeny from sires differ after accounting for maternal (dam) effects?

In June 2015 we assessed survival and measured 1-year-old plants from qGen2. During the summer and fall of 2015 we replicated the qGen2 experiment through a second crossing experiment. We sowed the resulting achenes in exPt 8 as our qGen3 cohort.

Read more about the qgen2 and qgen3 experiments.

IMG_5251

Dam to be crossed with pollen from 2 sires

Start year qGen2: 2013

Start year qGen3: 2015

Location: exPt 1 (dams), remnants Landfill and Staffanson (sires), remnants Landfill (core) & around Landfill (peripheral) and remnants Staffanson (core) & railroad crossing sites (peripheral) (grand-dams), exPt 8 (progeny)

Overlaps with: Heritability of fitness–qGen1

 

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