Indigocrisp and Other SHB Selections
from the UF-IFAS Breeding Program
Dr. Jim Olmstead
February 20, 2014
UF Variety Release
• Must adhere to current UF-IFAS standards
- Tested in enough replication, locations,
years, etc.
- Chain of custody – developmental
timeline, MTA agreements
- Foundation stock
- Plan for intellectual property protection
and commercialization
UF Variety Release
• Release justification presented to
Departmental and IFAS cultivar release
committees.
• After release, Florida Foundation Seed
Producers, Inc. handles commercialization for
the University of Florida.
Royalties
• UF – IFAS policy on release, protection and
introduction of plant material:
70% of the royalty payment comes directly
back to the breeding program
Royalty payments fund the breeding
program: salary, students, and infrastructure
FL 98-325 (IndigocrispTM)
FL 98-325 is an early maturing crisp-textured genotype best
adapted to areas with chilling requirements similar to or higher
than Gainesville, FL. The key positive attributes for FL 98-325 are:
•
•
•
•
•
•
•
Very firm, crisp texture similar to Bluecrisp and Sweetcrisp
Earlier maturing than either Bluecrisp or Sweetcrisp
Higher yields than existing crisp textured genotypes
Potential for machine harvest for fresh market production
Reduced postharvest bruising or pathogen damage
Good flavor and size
Good vegetative budbreak with high crop loads
FL 98-325 (IndigocrispTM)
Potential problems with FL 98-325:
• Higher chill requirement means limited potential in
expanding production areas in Florida (I-4 south).
• Propagation by softwood stem cuttings has often resulted in
low rooting percentages.
• Susceptible to Botryosphaeria stem blight.
• Darker fruit color
11/27/2012
1/30/2013
4/2/2012
11/27/2012
Field Ratings (2011-2013)
50% Bloom
Harvest
Genotype
FL 98-325
Emerald
Scintilla
Star
Date (DOY)
44
37
31
49
Timing
Early-mid
Mid-late
Early-mid
Mid
Surv.
7
8
7
7
Sweetcrisp
Farthing
41
45
Late
Mid-late
9
9
5
9
6
5
5
6
7
7
9
9
9
9
8
6
Meadowlark
34
Early
7
7
7
7
8
6
8
7
Primadonna
41
Early-mid
8
4
6
6
6
7
6
8
Yield Leaf. Size Color
7
7
8
6
8
8
9
7
6
7
8
9
6
6
7
7
Scar Firm. Flavor
8
9
8
7
8
6
8
7
9
7
7
7
Lab Ratings (2013)
Avg. Berry
% Titrat.
% Soluble
SS/TA
Firmness
Genotype
Wt. (g)
Acidity
Solids
Ratio
(g/mm)
FL 98-325
2.55 ± 0.30
0.333 ± 0.04
12.1 ± 0.64
36.7 ± 6.0
250.66 ± 4.8
Emerald
2.54 ± 0.11
0.810 ± 0.16
12.0 ± 0.70
15.3 ± 4.0
190.09 ± 3.5
Scintilla
2.55 ± 0.30
0.599 ± 0.20
10.9 ± 2.55
20.0 ± 10.9
221.06 ± 7.1
Star
2.86 ± 0.43
0.646 ± 0.05
12.4 ± 0.42
19.2 ± 0.7
206.51 ± 7.6
Sweetcrisp
2.07 ± 0.25
0.556 ± 0.03
14.1 ± 0.14
25.4 ± 1.6
266.19 ± 6.1
Farthing
2.24 ± 0.18
0.606 ± 0.07
11.8 ± 0.21
19.5 ± 2.5
223.23 ± 7.9
Meadowlark 2.94 ± 0.02
0.402 ± 0.01
10.8 ± 0.92
26.8 ± 2.5
236.23 ± 12.9
Consumer Evaluation of Crisp Texture
40
35
gLMS (-100 to 100)
30
25
20
a
a
a
a
ab
a
ab
ab ab
b a ab
ab
bc
bc
c
b
c
Texture
15
Flavor
10
Overall Liking
5
0
Consumer Evaluation of Crisp Texture
40
35
gLMS (-100 to 100)
30
25
20
a
a
a
a
ab
a
ab
ab ab
b a ab
ab
bc
bc
c
b
c
Texture
15
Flavor
10
Overall Liking
5
0
Additional Information
Mehra et al. 2013. Postharvest disease development on
southern highbush blueberry fruit in relation to berry flesh
type and harvest method. Plant Dis. 97:213-221
• Machine harvested fruit with crisp texture (including FL
98-325) had the same or lower postharvest disease
incidence as hand harvested conventional texture fruit
Takeda et al. 2013. Techniques for increasing machine
harvest efficiency in southern highbush and rabbiteye
blueberry. HortTechnology 23:430-436.
• FL 98-325 had the highest packout percentages after
machine harvest (94% - similar to hand harvest)
Foundation Stock
MTA 12-094 (AgriStarts, Inc.) allows for the initiation and
propagation of FL 98-325 prior to license offerings.
• Initiation completed winter 2012-13, multiplication
stage currently
Initial budwood distribution will be limited. Breeder stock is
maintained at the PSREU at Citra.
Contact Florida Foundation Seed Producers for license
information
• 352-273-3656
• www.ffsp.net
Summary
• FL 98-325 is an early-maturing, crisp genotype which will add
another machine harvest for fresh market suitable variety to
the short list currently available to Southeastern blueberry
growers.
• Unreliable propagation has been the biggest difficulty in the
past. We hope to minimize this problem by making tissue
culture plantlets available at the time licenses are offered.
• FL 98-325 consistently ranks higher in yield than other crisptextured genotypes, and the sugar/acid ratio beats many
current varieties.
Dec. 2013
Jan. 2014
Feb. 2014
Feb. 2014 after H.C.
Harvest Timing
Total pounds/week for 5
bushes (3-yr old
planting)
Week of Year
FLSel01
Jewel
5
3.00
0
6
0
0
7
1.19
0
8
0.88
0
9
0
0
10
3.63
0
11
2.75
0
12
5.38
0
13
3.76
0
14
4.32
5.69
15
4.82
8.45
16
2.69
16.7
17
3.44
4.50
18
4.19
8.69
19
1.38
0.88
Total (Pound/5 bush)
41.43
44.91
Pound/acre (1800 plants) 15,000
16,000
Dr. Jim Olmstead
UF-IFAS Horticultural Sciences Dept.
2211 Fifield Hall
Gainesville, FL 32611
(352) 273-4837
http://www.hos.ufl.edu/faculty/jwolmstead