Walnuts Content

Genetics of Alternating Sexes in Walnuts

Andy Fell — January 02, 2025 - 11:52am

The genetics behind the alternating sexes of walnut trees has been revealed by biologists at the 91��Ƭ, Davis. The research, published Jan. 3 in Science, reveals a mechanism that has been stable in walnuts and their ancestors going back 40 million years — and which has some parallels to sex determination in humans and other animals.

91��Ƭ Davis Releases New Walnut Variety

Amy M Quinton — January 21, 2021 - 10:00am

91��Ƭ Davis researchers have bred a new walnut variety, "91��Ƭ Wolfskill," which will give growers a way to harvest earlier and boost harvest efficiency.

A Nutty Idea: A Little Stress Could Be Good for Walnuts

Amy M Quinton — October 22, 2018 - 11:03am

When it comes to watering walnuts, most California growers believe you need to start early to keep trees healthy and productive throughout the long, hot summer. But according to striking results from a long-term experiment in a walnut orchard in Red Bluff, California, growers can improve crop production if they hold off irrigation until later in the season and directly measure their trees’ water needs.

The findings from researchers at the 91��Ƭ, Davis, may help farmers optimize water use.

91��Ƭ Davis cracks the walnut genome

IET WebDev — December 10, 2015 - 12:00am

Scientists at the 91��Ƭ, Davis, have for the first time sequenced the genome of a commercial walnut variety. The information should accelerate the rate of breeding and variety improvement in walnuts and help breeders select for desired traits such as insect and disease resistance, and drought tolerance.