Preview Mode Links will not work in preview mode

Welcome to the web home for Field, Lab, Earth, the podcast from the American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America. The podcast all about past and present advances in agronomic, crop, soil, and environmental sciences, our show features timely interviews with our authors about research in these fields.

Field, Lab, Earth releases on the third Friday of each month in addition to the occasional bonus episode. If you enjoy our show, please be sure to tell your friends and rate and review. If you have a topic, author, or paper you would like featured or have other feedback, please contact us on Twitter @fieldlabearth or use the email icon below. You can join our newsletter to receive notifications about new episodes and related resources here.

Field, Lab, Earth features graduate and undergraduate students at the end of each episode. If you would like to be featured, please let us know by filling out this brief application form. Please note you must be a student member with ASA, CSSA, or SSSA to apply.

Thank you for subscribing using the buttons below. For mobile users, the icons, in order, are for Twitter, email, our RSS feed, Apple Podcasts, TuneIn (Alexa), Stitcher, Google Play, Google Podcasts, and Spotify.

Jan 17, 2020

“Genome-Wide Association Studies in Apple Reveal Loci for Aroma Volatiles, Sugar Composition, and Harvest Date” with Dr. Zoë Migicovsky, Dr. Carsten Pedersen

Apple breeding can take a long time. Because each seed is the progeny of two different trees and each tree takes five to six years to produce its first fruits, breeders can be waiting years, if not decades, to see the results of their hard work. Drs. Zoë Migicovsky and Carsten Pedersen are working to change that. By comparing the genomes of varying apple cultivars and their phenotypic data (traits you can discern via the five senses), Zoë and Carsten aim to pinpoint which genes are responsible for which traits. With that information, simple DNA testing may be able to shave years off of each round of breeding, helping breeders create better apples for your shelves in far less time.

Listen in to learn:

  • What is a genome wide association study?
  • What is the Pometum?
  • Why is it important to pair both genomic and phenotypic data?
  • How can knowing differing sugar ratios improve apple products, such as ciders or wines?

If you would like more information about this topic, this episode’s paper is available here: 

This paper is always freely available.

If you would like to find transcripts for this episode or sign up for our newsletter, please visit our website:

Contact us at or on Twitter @FieldLabEarth if you have comments, questions, or suggestions for show topics, and if you want more content like this don’t forget to subscribe.

If you would like to reach out to Zoë, you can find her here:
Twitter: @Zoemig
Her lab Twitter: @foodimprover

If you would like to reach out to Carsten, you can find him here:


CEU Quiz: 

Dalhousie University site:

Zoe’s personal site:

The Pometum:

The apple key:

Crowd breeding program (in Danish):

Related Papers:

“Genome to Phenome Mapping in Apple Using Historical Data”:

“Using Living Germplasm Collections to Characterize, Improve, and Conserve Woody Perennials”:

“Genome-wide association studies in apple reveal loci of large effect controlling apple polyphenols”:

“Population structure, relatedness and ploidy levels in an apple gene bank revealed through genotyping-by-sequencing”:

Field, Lab, Earth is copyrighted to the American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America.