Backyard Orchard News
Welcome Back, Monarchs!
It will be a monarch-kind of day. And why not? Monarch enthusiasts are eagerly...
A monarch lands on a Mexican sunflower (Tithonia) in Vacaville, Calif. It may head to an overwintering site in Santa Cruz. (Photo by Kathy Keatley Garvey)
The monarch adjusts its position. (Photo by Kathy Keatley Garvey)
The monarch continues to feed. (Photo by Kathy Keatley Garvey)
The majestic monarch in all its glory. (Photo by Kathy Keatley Garvey)
Congratulations, 'Bugman' Jeff!
Entomologist Jeff Smith of Rocklin, an associate at the Bohart Museum of Entomology who has saved...
Helene Dillard, dean of the UC Davis College of Agricultural and Environmental Sciences, welcomes the crowd at the Oct. 2nd college celebration honoring recipients of the Award of Distinction. (Photo by Kathy Keatley Garvey)
Entomologist Jeff Smith, recipient of a Friend of the College Award of Distinction, addresses the crowd. (Photo by Kathy Keatley Garvey)
Entomologist Jeff Smith with some of the collection he's curated at the Bohart Museum of Entomology. (Photo by Kathy Keatley Garvey)
A Carrot field day held at Kearney showcased the results of efforts to develop root-knot nematode resistance in commercial quality carrots.
About 20 carrot industry stakeholders attended a carrot field day on October 7, 2015. The field day showcased the current status of a 20-year program to incorporate root-knot nematode resistance into commercial quality carrots. Philip A Roberts, Chair, nematologist, and professor in the Department of Nematology at UC Riverside, Philipp Simon, Carrot and Garlic Geneticist at USDA-ARS and the Department of Horticulture at University of Wisconsin, Madison lead the project. The research and breeding effort is funded by grants from the California Fresh Carrot Advisory Board and USDA-NIFA.
Numerous carrot advanced breeding lines show good resistance to root-knot infection and will be important in nematode management strategies when resistant varieties are released for growers. The project sites are infested with Meloidogyne javanica and M. incognita, the two common root-knot species in the warm interior valleys of California. To ensure uniform and heavily infested research sites, a 4-year rotation for experimentation (control and advanced selections and crosses of carrots) and uniform cropping (susceptible sorghum, lima beans, and tomatoes) is used.
Kearney is one of several sites used in field screening wild germplasm, new and advanced breeding lines, and finished varieties of carrots. The plots are coded for the source of resistance, and a highly susceptible carrot cultivar planted in every fifth plot is used to indicate the infestation levels. The primary goal is to select for resistance as well as market quality. The crossing of resistant and susceptible carrot lines is followed by agronomic and resistance selection to provide high quality resistant carrot breeding stocks to the seed industry. The seed companies then inter-breed the resistance with their own breeding lines to develop commercial varieties with resistance. The resistance should be highly beneficial for nematode management. Field site data is used with greenhouse data at UC Riverside. The project has also facilitated carrot genome mapping.
Carrot field day attendees evaluating carrot breeding lines at Kearney for root-knot nematode resistance and market traits.
Why Flies Are Pollinators, Too!
Will all the pollinators please stand up! Or do a fly-by like the Blue Angels or a crawl-by like...
A bee fly, genus Villa, collecting pollen on a Mexican sunflower (Tithonia). (Photo by Kathy Keatley Garvey)
Honey bee (left) and a syrphid fly, aka hover fly or flower fly, sharing a Tithonia. (Photo by Kathy Keatley Garvey)
The Aphid Eater
The circle of life... Monarch caterpillars feast on milkweed, their host plant. Oleander...
A lady beetle munching on an aphid while another aphid (far right) looks on. (Photo by Kathy Keatley Garvey)
Close-up of a lady beetle eating an aphid. (Photo by Kathy Keatley Garvey)