2012 - Washington Red Raspberry Commission

Project:
Title:
Personnel:
13C-3755-5641
Red Raspberry Breeding, Genetics and Clone Evaluation
Patrick P. Moore, Scientist, Washington State University Puyallup Research and
Extension Center
Wendy Hoashi-Erhardt, Scientific Assistant, WSU Puyallup
Reporting Period: 2012
Accomplishments:
Advanced Selections/ possible release. A selection has been identified that machine harvests
well, is root rot tolerant and raspberry bushy dwarf virus (RBDV) resistant. Yields at WSU
Puyallup and in machine harvesting trials have been good. Propagation material was sent to
nurseries fall 2011 for propagation prior to possible release, but only a limited number of plants
will be available in 2013, so a release request will not be proposed in 2012. This selection and
two other selections were planted in larger test plantings for IQF evaluations with cooperating
growers in 2012 and a “baby” crop is scheduled to be harvested in 2013. These selections could
be released as new cultivars after evaluation.
Crosses/seedlings/selections. In 2012, 77 raspberry crosses were made for cultivar development
and germplasm purposes. An additional 12 crosses were made for research studies. Seedlings
from crosses made in 2011 were planted in the field at WSU Puyallup. Sixty-five selections
were made in 2012 among the 7,200 raspberry seedlings planted in 2010. Thirty-seven of the
selections have a RBDV resistant parent and an additional 9 selections have both parents RBDV
resistant. Seventy-five percent of the selections had a parent that is known to be tolerant of root
rot.
Machine Harvesting Trials. A new machine harvesting planting to evaluate machineharvestability
of raspberry selections was established with a cooperating grower with 90 WSU
selections, 10 BC selections and two reference cultivars. This planting will be machine
harvested in 2014 and 2015. The machine harvesting plantings established in 2009 and 2010
were evaluated weekly during the 2012 season beginning July 5. There were 12 selections in the
2009 and 2010 plantings that exhibited traits of high yields, excellent plant vigor, good fruit
integrity, and low incidence of harvested green berries. The most promising of these selections
will be planted with a cooperating grower for additional evaluation. Some WSU selections may
be planted in grower trials, given successful plant propagation.
Selection Trial Puyallup. A replicated planting was established at WSU Puyallup of six WSU
selections, one BC selection and two cultivars in replicated plots and 10 WSU selections in
observation plots. This planting will be harvested in 2014 and 2015. A new root rot planting
was established with seven WSU selections and three cultivars. The replicated planting
established in 2009 was hand harvested for the second time in 2012 (Table 1). WSU 1957 had
the highest yield in 2012 and the highest two year total. WSU 1507 had the highest yield in 2011
and the second highest two year total. The replicated planting established in 2010 was hand
harvested for the first time in 2012 (Table 2). WSU 2115 had the highest yield and largest fruit
weight. WSU 2029 had an extremely late ripening season, beginning July 26, and although
harvest was discontinued August 6, had ripe fruit through the beginning of September.
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