Nov 17, 2020

QTL and markers for selection of Gummy Stem Blight resistance in watermelon

 We just published a new paper in Theoretical and Applied Genetics describing QTL mapping of gummy stem blight resistance in watermelon. You can read more about it here.


Oct 8, 2020

New markers for selection fo flesh color in watermelon

In collaboration with Dr Geung-Joo Lee from Korea a new study was just published in Genes on PPR-derived markers for flesh color in watermelon. 

Sep 30, 2020

UGA Cucurbit Breeding

 Drs McGregor and Boyhan contributed to the  Vegetable and Specialty Crop News magazine. The article entitled Breeding Better Cucurbits appeared in the September issue of VSC News.

Aug 20, 2020

2020 Watermelon Field Evaluations

 We just finished our watermelon field evaluation for summer 2020. Due to Covid we did not have as many field plots as usual, at least we got something out of this season. Thanks for everybody's help with planting, trailing and harvesting.

Aug 5, 2020

Congratualtions Winnie!

Congratulations to Winnie for completing her Ph.D! She did an excellent job and we wish her all the best for the future. May all your dreams come true!

Informal (covid) Graduation ceremony
Informal (covid) Graduation Ceremony

Jun 17, 2020

At last - Field plots 2020!

Due to covid all our field trials were delayed and we scaled down our summer field plots significantly. But al last we were able to transplant some watermelon this week! As you can see we are all staying safe in the field!

Winnie Gimode (PhD student) is very excited that this will be her last watermelon field transplanting. She will be graduating in August.

And here is Sammy Josiah (PhD student) planting his first field experiment.

Apr 2, 2020

Reading suggestions during shutdown

If you are looking for something to read during the shutdown here are two great books for those interested in Plant Breeding and Genetics

Feb 13, 2020

Filling Pots is Fun!

The Greenhouse Team makes filling pots look like a lot of fun! Thanks for all your hard work keeping the greenhouses in top shape.

From left to right: Erin Gantt, Jarrod Smith, Jesse Kuzy, Ingrid Brindle and Jared Gilstrap.

Dec 16, 2019

Deciphering gummy stem blight : Team Effort!!!

Time for just one more screen before the year ends! We sowed seeds for our next big GSB screen in the greenhouse!

Nov 1, 2019

The joys of Pollination

One of the things we do every week is to pollinate watermelon flowers in our green house, and to enjoy the view of these flowers.

Oct 29, 2019

Plant Center Retreat in Helen, GA

McGregor Lab participated in the 2019 UGA Plant Center Retreat held in Helen, GA. Little Benjamin was not left out in the poster presentations!!!

Oct 9, 2019

PostDoctoral Position available

The Vegetable Breeding, Genetics and Genomics lab searches for an energetic and creative postdoc. The applicant will participate in cucurbit breeding and genetics for resistance to whitefly and whitefly transmitted diseases as part of a team in the southeastern USA. The applicant will work on identifying sources of resistance, resistance loci and genes, doing functional analysis of genes, and introgression of resistance into elite material. The candidate will work in collaboration with molecular biologists, plant pathologists, entomologists and extension faculty.

The position will start on 1 Oct 2019, but a later start is negotiable. We provide competitive salary, and benefits. Screening of applicants will begin immediately and applications will be considered until position is filled. Interested parties should submit their application at UGA Jobs (, including a curriculum vitae (CV), a cover letter, statement of how your research interests are related to the interests of the lab, and contact information for 3 references.

UPDATE: This position has been filled.

Oct 1, 2019

Precious Cargo

We are currently working hard to identify squash resistant to whitefly transmitted viruses.

Potential resistant genotype (left) vs  susceptible genotype (right).

Transporting our precious leaf samples back to the lab.

Sep 17, 2019

UGA CAES part of extensive research study aimed at whitefly management

The McGregor Lab is part of a $3.2 million grant from the U.S. Department of Agriculture to fight whiteflies on vegetable crops.

Aug 13, 2019

Another successful watermelon season!

Over the summer everybody in the lab worked hard in the watermelon fields. And of course we ate a lot of delicious watermelon!

Aug 8, 2019

Mathew Li Wins First Place in Young Scholar Oral Presentation Competition!

Over this summer our lab had the pleasure of hosting Stevenson High School student Mathew Li through the UGA CAES Young Scholar program. Mathew worked with one of our graduate students on determining the sporulation rates of various isolates of Stagonosporopsis fungi so that they can be used for phenotyping watermelon lines for resistance to gummy stem blight. Mathew’s work helped to identify 8 isolates with sufficient spore production for making GSB inoculum, as well as determining which species of Stagonosporopsis each of the isolates belonged to. Mathew took first place in the Athens division of the Young Scholar oral presentation competition, continuing the McGregor lab's tradition of victory in the Young Scholar program. We look forward to seeing great things from Matt and hope that he chooses UGA to continue his educational journey.

Jul 19, 2019

Derrick Ousley - REEU fellow

This summer our lab hosted Derrick Ousley as part of the Crop Genetic and Genomics REEU program. Jorge Reyes mentored Derrick in his research project. Today Derrick presented his poster  entitled "Developing Recombinase Polymerase Amplification (RPA) Assays for Gummy Stem Blight Pathogen Detection in Watermelon" at the REU/REEU Summer Research Poster Forum. It was a pleasure having Derrick with us this summer and we wish him all the best as he continues his undergraduate education.

Jorge Reyes (mentor) and Derrick Ousley

Jun 28, 2019

Field Day

The lab participated in the The Twilight Summer Field Day onThursday, June 27 to highlight fruit and vegetable research at the Durham Horticulture Farm on Hog Mountain Rd.

From Left to right: Sammy Manthi, Lincoln Adams, Jorge Reyes and Jesse Kuzy