Chris Gottschalk

Photograph depicting greenhouse space and implementation infrastructure before implementation of the progressive drought regime used in the present study.

New environmental stress physiology research at the USDA-ARS Appalachian Fruit Research Station suggests distinct survival strategy conveyance by selected Apple rootstock cultivars (B.10, B.9, G.11, G.935, G.969) grafted to `Honeycrisp` scion! https://doi.org/10.21273/JASHS05526-25 #horticulture

My condolences, he was a good boy :(

Both are suitable replacements

As a pear breeder, I approve of this

Been doing this since undergrad and it’s been a real help. With the way things are changing, definitely don’t skip out on the gpu specs.

Ragnarok: a flexible and RApid GeNe Annotation (ROcKs) pipeline deployed through Nextflow Motivation High-quality genome assemblies and pangenomes are increasingly accessible and achievable due to advances in third-generation sequencing and assembly algorithms, but genome annotation remain...

Gene annotation remains a huge bottleneck in genomics but @pomics.bsky.social & Meg Staton's group at Tennessee have put together an awesome fast and accurate pipeline! Thrilled to have contributed to this awesome team effort. Check out the preprint here 👇
www.biorxiv.org/content/10.1...

Temperate fruit that tastes tropical, that is scary

I still have many of these historic Mich US #pears lines in my collection. Unfortunately 504 is not one of them.

michigan u.s. 504 pears, painted by l. c. c. krieger, 1936

michigan u.s. 504 pears, painted by l. c. c. krieger, 1936

I hear there some out in my neck of the woods. You’re always welcome to come down here!

Development of Rosaceae Crop-Specific Nanopore Models for Community Use Through the Genome Database for Rosaceae https://www.biorxiv.org/content/10.1101/2025.06.23.660393v1

Prunus yes, Malinae we use some customized scissors!

A small apple tree with blossoms developing.

Small apple fruitlets from a controlled cross are on a spur of a small apple tree.

A wild collected, possible F1 or F2 progeny in our wild #apple germplasm collection have exhibited flowering in just their third year! Other apple also exhibited short juvenile periods but this one is a big windfall for our #prebreeding program specifically. I even got it to set controlled crosses.

Five small fruitlets on an apple tree branch.

The crossing seasons been busy this year! Lots of successful crosses in our pre-breeding #apple program! Some of these crosses represent our fourth, fifth or later generations of our decade old program! Cheers to wide crosses and breaking down the interrelatedness that’s rampant in apple cultivars!

One case where correlation could equal causation

snoop dogg is wearing a hat , glasses , a necklace , and a black shirt . ALT: snoop dogg is wearing a hat , glasses , a necklace , and a black shirt .

Starting a Friday on leave with a paper acceptance

A red-fleshed pear being held in a hand. The peel of the pear is green highlighting the striking pink hued flesh.

Red-fleshed #pears are so cool

#redfleshedpears

A red colored pear hanging from a pear tree branch

Maslin(R) strain of ‘Pink Lady’ apple being held in a hand

Think of better times during the fall #apples #pears

Meh

One of my favorites

You could say she having an impact on your work…

They are a bit pasted at this point but yes, one of the better storage potentials I’ve seen in our collection.

Four US 78302-018 pears

What was classified as a potential #rootstock turns outs to have great fruit quality. Stems are too long but hey you can’t always win the #genetic lottery

#pears #plantbreeding

Hold my cider, we’re working on it!

Omics-Based Comparison of Fungal Virulence Genes, Biosynthetic Gene Clusters, and Small Molecules in Penicillium expansum and Penicillium chrysogenum Penicillium expansum is a ubiquitous pathogenic fungus that causes blue mold decay of apple fruit postharvest, and another member of the genus, Penicillium chrysogenum, is a well-studied saprophyte va...

Some cool fungal genomics work I participated in www.mdpi.com/2309-608X/11...

Horticulturist/Geneticist (Plants) This position is located with USDA, ARS, Pacific West Area (PWA), National Clonal Germplasm Repository (NCGR) in Corvallis, OR and will be the Curator of the National Plant Germplasm System (NPGS) col...

The ARS in Corvallis, OR is looking for a new horticulturist/geneticist to work on the tree and nut crops at their location. As the site of the pear germplasm, you'd get work with me! The pear breeding program relies heavily on the curatorial efforts from this location. www.usajobs.gov/job/824903300

Big ol’ fan of this variety and its synonym ‘Kyle’s Sugar’. It maybe small but it packs a sugary punch!

In #Yakima, WA for a meeting for the first time and the aroma of #hops is strong (in the best possible way)

Out in the Pacific Northwest, home to one of my favorite wild #apples - #Malusfusca! Having spent more than a decade working with fusca and its hybrids, it was really fun to co-lead the effort to resolve the first North American wild apple species #genome with @bmansfeld.bsky.social.

lowland raspberry apples, painted by royal charles steadman, 1927

lowland raspberry apples, painted by royal charles steadman, 1927