Biology
This type of fruit, which includes peaches, has a fleshy mesocarp and a hard pit.
What is a drupe?
This trait distinguishes freestone from clingstone peaches.
What is pit adherence to the flesh?
This fungal disease causes distorted red leaves in spring.
What is peach leaf curl (Taphrina deformans)?
This traditional canopy training system is most common in peaches.
What is the open-center (vase) system?
Peaches were domesticated about 6,000 years ago in this country.
What is China?
Peaches are classified in this plant family, alongside apples, cherries, and strawberries.
What is Rosaceae?
This U.S. university is home to a major peach breeding program, releasing cultivars like ‘Redhaven’.
What is Michigan State University/UARK/UC Davis/Texas A&M
The peach tree borer is identified by this diagnostic symptom at the tree base.
What is gum mixed with frass at the crown?
The optimal soil pH range for peach production.
What is 6.0–6.8
Peaches were introduced to the Americas in the 16th century by explorers from this nation.
What is Spain?
This gene mutation is responsible for the difference between peaches and nectarines.
What is a mutation in the PpeMYB25 gene?
Molecular markers are used in this type of breeding to speed up trait selection.
What is marker-assisted selection (MAS)/Genomic Selection?
Brown rot, caused by Monilinia spp., can destroy this percentage of fruit in wet preharvest conditions.
What is up to 80%?
This orchard practice is needed because peaches only fruit on one-year-old wood.
What is annual pruning?
Today, this country produces over 60% of the world’s peaches.
What is China?
Peaches require this many hours of chill (within what range) to break dormancy and flower.
What are 400–1,000 chill hours?
Name one trait QTL mapping has identified in peaches
What is firmness / soluble solids / bloom time / disease resistance?
This pest tunnels into peach shoots and fruit, causing “flagging.”
What is the oriental fruit moth (Grapholita molesta)?
This thinning window, in days after bloom, is considered optimal for fruit size. (How many days after bloom)
What is 30–45 days after bloom?
Mediterranean countries like Spain and Italy are leaders in production, but this U.S. region is also a major grower.
What is the Southeastern U.S.? (Also accept California)
The peach genome is diploid, with this chromosome number and approximate genome size.
What are 2n=16 chromosomes and ~265 Mb?
This wild peach relative provides resistance alleles for disease breeding.
What is Prunus davidiana (or P. ferganensis)?
This bacterial disease causes sunken pits on fruit and angular necrotic leaf spots.
What is bacterial spot (Xanthomonas arboricola pv. pruni)?
High-density peach orchards may plant this many trees per hectare.
What is 800–1,200 trees/ha?
Peaches are phylogenetically closest to this other nut crop.
What is almond?