NCSU Cucumber Breeding Report - 1999
Todd C. Wehner
Professor
Tammy L. Ellington
Agric. Res. Tech. III
Department of Horticultural Science
North Carolina State University
Raleigh, NC 27695-7609
Spring (Stage 3) Slicing Cucumber Trial
1999
Todd C. Wehner and Tammy L. Ellington
Experiment Design
1. A randomized complete block with 3 replications of slicer cultivars
and breeding lines (collectively referred to as cultigens) was grown.
2. Plots were single 20 ft. rows with 5 ft. alleys at each end.
3. Rows were on raised 18" beds spaced 60" apart (center to center).
4. Fertilizer consisted of 80-80-80 lb/A (N-P-K) broadcast preplant
and 30-0-0 lb/A (N-P-K) sideplaced at the 2 to 4 leaf stage.
5. Curbit was applied preemergence at the rate of 1 lb. a.i./A.
6. The trial was planted 3 May, and harvested 6 times
(Mondays and Thursdays) between 24 June through 12 July.
Data Collection
1. Fruits were weighed after sorting into No.1, No.2 and cull
(nubs and crooks) grades according to U.S.D.A. standards.
2. Fruit length, diameter and weight were recorded for 3 fruit per plot.
3. Quality ratings were from 1 to 9, with 1 = worst, 9 = best.
4. Disease ratings were from 0 to 9, with 0 = no disease, 1-2 = trace,
3-4 = slight, 5-6 = moderate, 7-8 = severe, 9 = plant dead.
Results
The following cultigens performed well, and could be advanced
to the next stage:
1 Thunder (1700) Seminis
2 General Lee (4440) Harris Moran
3 SRQS-2389 Sunseeds
4 SRQS-2646 Sunseeds
5 Greensleeves Harris Moran
6 Dasher II Seminis
Table 23. Stage 3 spring slicer trial - yield data (cultigens ranked by
cwt/A of Fancy + No. 1 grade fruit).
_________________________________________________________________________________
Yield(cwt/A) Percent Plants
Cultivar Seed Fancy Market- Fancy Percent per A
Rank or line source +No.1 able +No.1 culls (X1000)
_________________________________________________________________________________
1 SRQS-2389 Sunseeds 249 408 51 15 26
2 SCU-6601 SakataSeed 242 384 52 16 26
3 Thunder(1700) Seminis 239 386 49 20 26
4 GeneralLee(4440 HarrisMoran 237 430 45 18 26
5 Greensleeves HarrisMoran 225 355 53 14 25
6 Dasher II Seminis 224 369 49 16 25
7 SRQS-2644 Sunseeds 207 347 45 23 26
8 SRQS-2646 Sunseeds 197 343 44 23 26
9 Daytona Seminis 197 304 55 15 26
10 Indy Seminis 175 290 54 11 26
11 Turbo Seminis 174 290 53 12 26
12 Prolific SakataSeed 166 313 42 19 26
13 XP-1825 Seminis 162 278 49 17 24
14 SRQS-2387 Sunseeds 156 302 37 29 23
15 SRQS-2645 Sunseeds 143 309 34 27 26
16 Panther(3727) Sunseeds 142 220 49 23 26
17 XP-1824 Seminis 136 205 52 23 26
18 Revenue (4289) HarrisMoran 135 217 54 13 24
19 Poinsett 76 CornellUniv 128 225 42 25 26
20 K7-605 SakataSeed 115 238 39 19 23
21 Ashley Check 87 153 50 13 21
_________________________________________________________________________________
LSD (5%) 87 126 14 12 4
Mean 178 303 48 19 25
CV (%) 29 25 18 39 9
_________________________________________________________________________________
Correlation (Marketable yield with % culls) = -0.27*
Table 24. Stage 3 spring slicer trial - earliness data (cultigens ranked
by weight of Fancy + No.1 grade fruit in harvests 1 and 2).
_________________________________________________________________________________
Cumulative fruit weight and % of
total weight (6 harvests) for harvest:
Cultivar Seed 1 1-2 1-3 1-4 1-5 _
Rank or line source wt. % wt. % wt. % wt. % wt. %
_________________________________________________________________________________
1 Thunder(1700) Seminis 102 27 152 40 183 48 300 78 355 92
2 SRQS-2646 Sunseeds 100 30 144 42 168 50 313 91 327 95
3 GeneralLee(4440 HarrisMoran 76 18 141 33 211 49 312 72 385 89
4 SRQS-2387 Sunseeds 52 17 127 41 169 55 237 74 280 93
5 SRQS-2389 Sunseeds 33 8 122 31 154 39 290 72 353 87
6 Greensleeves HarrisMoran 87 24 113 32 135 38 258 72 323 91
7 Dasher II Seminis 51 15 112 33 157 46 247 67 320 87
8 SRQS-2644 Sunseeds 49 14 105 31 149 42 271 80 319 93
9 SRQS-2645 Sunseeds 28 8 94 28 139 44 229 69 271 86
10 Daytona Seminis 26 11 81 32 107 41 199 66 264 88
11 SCU-6601 SakataSeed 50 14 79 21 105 28 260 69 332 86
12 Indy Seminis 22 8 67 24 81 28 192 68 237 82
13 XP-1825 Seminis 40 12 67 19 87 27 195 71 240 86
14 Turbo Seminis 18 7 60 22 80 29 184 64 249 86
15 Revenue (4289) HarrisMoran 20 9 60 28 86 39 151 70 196 90
16 Prolific SakataSeed 23 7 59 18 85 27 182 58 265 84
17 K7-605 SakataSeed 24 10 56 23 81 34 148 62 195 82
18 XP-1824 Seminis 26 14 55 29 62 33 145 71 170 84
19 Poinsett 76 CornellUniv 22 9 55 23 72 31 173 76 198 88
20 Panther(3727) Sunseeds 34 14 50 24 69 33 163 69 201 90
21 Ashley Check 2 1 7 4 16 10 87 59 119 80
________________________________________________________________________________
LSD (5%) 33 11 53 18 63 19 99 18 108 8
Mean 42 13 86 28 114 37 216 70 266 88
CV (%) 48 49 38 40 34 32 28 15 25 5
________________________________________________________________________________
Correlation (Marketable yield with yield in harvests 1-2) = 0.72**
Correlation (Marketable yield with % of yield in harvests 1-2) = 0.17ns
Table 25. Stage 3 spring slicer trial - fruit quality data (cultigens ranked
by average quality).z
_________________________________________________________________________________
Cultivar Seed Average Seed- Overall
Rank or line source quality Shape Color cell impression
_________________________________________________________________________________
1 Greensleeves HarrisMoran 7.4 7 8 7 8
2 Thunder(1700) Seminis 7.3 8 8 7 7
3 SRQS-2389 Sunseeds 7.3 7 8 7 8
4 Turbo Seminis 7.3 7 8 8 7
5 GeneralLee(4440 HarrisMoran 6.9 7 8 7 7
6 Daytona Seminis 6.9 7 9 6 7
7 Revenue (4289) HarrisMoran 6.8 6 8 7 7
8 SCU-6601 SakataSeed 6.8 7 8 5 8
9 Prolific SakataSeed 6.8 7 8 6 8
10 SRQS-2645 Sunseeds 6.7 6 8 7 7
11 Indy Seminis 6.7 6 9 7 6
12 SRQS-2646 Sunseeds 6.6 6 8 7 6
13 Dasher II Seminis 6.6 6 8 7 6
14 XP-1825 Seminis 6.4 7 7 5 7
15 SRQS-2387 Sunseeds 6.4 6 8 7 6
16 Ashley Check 6.3 7 7 7 5
17 SRQS-2644 Sunseeds 6.3 6 7 6 6
18 XP-1824 Seminis 6.1 7 8 6 6
19 Panther(3727) Sunseeds 6.1 6 7 6 6
20 Poinsett 76 CornellUniv 5.8 6 6 5 6
21 K7-605 SakataSeed 5.2 5 8 5 6
_________________________________________________________________________________
LSD (5%) 1.1 2 1 2 2
Mean 6.6 7 8 7 7
CV (%) 10.2 16 10 14 15
_________________________________________________________________________________
z Quality rated 1 to 9 (1 = poor, 5 = average, 9 = excellent;
except color where 1 = white, 5 = medium green, 9 = very dark green).
Correlation (Marketable yield with average quality) = 0.38**
Table 26. Stage 3 spring slicer trial - fruit dimensions and comments
(cultigens ranked by average quality rating).z
_________________________________________________________________________________
Cultivar Seed Length Diameter Wt. Defect1° Defect2°
Rank or line source (0.1") (0.1") (lb.) 2 4 6 2 4 6
_________________________________________________________________________________
1 Greensleeves HarrisMoran 7.8 2.0 0.63 K K G T A K
2 Thunder(1700) Seminis 8.5 2.1 0.81 K G T K T K
3 SRQS-2389 Sunseeds 8.3 2.2 0.86 D K D K K K
4 Turbo Seminis 8.8 2.1 0.89 K K T H K K
5 GeneralLee(4440 HarrisMoran 8.4 2.2 0.81 K T D H K T
6 Daytona Seminis 8.3 2.1 0.82 K H K T K G
7 Revenue (4289) HarrisMoran 8.3 2.1 0.75 T K H K T T
8 SCU-6601 SakataSeed 7.9 2.1 0.81 T K H H K K
9 Prolific SakataSeed 7.9 2.1 0.92 H G K T K K
10 SRQS-2645 Sunseeds 8.9 2.1 0.81 G G G T T T
11 Indy Seminis 7.9 2.1 0.76 H H H T K K
12 SRQS-2646 Sunseeds 8.8 2.2 0.88 D H H T K T
13 Dasher II Seminis 8.4 2.1 0.85 H K H C T K
14 XP-1825 Seminis 7.9 2.1 0.84 M K M T N D
15 SRQS-2387 Sunseeds 8.0 2.2 0.77 T H H N T K
16 Ashley Check 7.3 2.1 0.67 H M M K I A
17 SRQS-2644 Sunseeds 8.1 2.0 0.68 A K H H T T
18 XP-1824 Seminis 7.7 2.0 0.61 T H H H T S
19 Panther(3727) Sunseeds 8.0 2.1 0.73 T H T K T G
20 Poinsett 76 CornellUniv 7.5 2.1 0.68 H H O T K H
21 K7-605 SakataSeed 7.9 2.0 0.75 H T T T K C
_________________________________________________________________________________
LSD (5%) 0.8 0.2 0.23
Mean 8.1 2.1 0.77
CV (%) 6.6 7.1 17.80
_________________________________________________________________________________
z Defects were rated as follows (giving primary and secondary for each harvest):
A - wArty fruit J - RiDGed S - Separated carpels
B - Blossom end defects K - Keep(excellent) T - Tapered ends
C - Crooks excessive L - Late maturity U - Uniform green
D - Dogbone shape M - Mottled fruit V - Varicolor (dark stem
E - Early maturity N - Nubs excessive end, light blossom end)
F - Four celled O - Offtype fruit W - White fruit
G - lonG fruit P - Placental hollows X - neCKS on fruit
H - sHort fruit Q - Y - Yellow fruit
I - strIped fruit R - Reject (poor) Z - diSeased fruit
Table 27. Stage 3 spring slicer trial - fruit keeping ability data (cultigens
are ranked by % weight loss).
_________________________________________________________________________________
Weight Rating (0 - 9)y Firm-
Cultivar Seed loss Shriv- Rots & ness
Rank or line source (%)z eling disease (lb.)x
_________________________________________________________________________________
1 Greensleeves HarrisMoran 13 3 1 15
2 Thunder(1700) Seminis 19 4 0 16
3 SRQS-2389 Sunseeds 13 3 0 15
4 Turbo Seminis 15 2 0 16
5 GeneralLee(4440 HarrisMoran 13 2 0 13
6 Daytona Seminis 14 3 0 16
7 Revenue (4289) HarrisMoran 15 3 0 14
8 SCU-6601 SakataSeed 14 3 0 15
9 Prolific SakataSeed 14 2 0 13
10 SRQS-2645 Sunseeds 14 3 0 14
11 Indy Seminis 14 2 0 15
12 SRQS-2646 Sunseeds 14 3 0 15
13 Dasher II Seminis 15 4 0 16
14 XP-1825 Seminis 14 3 2 13
15 SRQS-2387 Sunseeds 13 3 1 14
16 Ashley Check 16 3 1 14
17 SRQS-2644 Sunseeds 15 3 0 14
18 XP-1824 Seminis 15 3 0 16
19 Panther(3727) Sunseeds 14 2 0 14
20 Poinsett 76 CornellUniv 14 3 1 14
21 K7-605 SakataSeed 13 3 0 15
_________________________________________________________________________________
LSD (5%) 3 2 1 2
Mean 14 3 0 15
CV (%) 14 44 155 9
_________________________________________________________________________________
z After storage at room temperature for 8 days in open kraft paper bags.
y Shriveling & disease rated 0-9 (0=none, 1-3=slight, 4-6=moderate, 7-9=advanced).
x Firmness after storage using Magness-Taylor fruit punch tester.
Correlation (Weight loss with shriveling) = -0.03ns
Correlation (Weight loss with firmness) = 0.32**
Table 28. Stage 3 spring slicer trial - sex expression and vine data (cultigens
ranked by gynoecious rating).
_________________________________________________________________________________
Early Earli-
Cultivar Seed Gyn. yield ness Vine Vine
Rank or line source ratingz (cwt/A) (%)x sizew colorw
_________________________________________________________________________________
1 SRQS-2644 Sunseeds 8 105 31 7 9
2 SRQS-2387 Sunseeds 8 127 41 7 8
3 Indy Seminis 7 67 24 7 7
4 SRQS-2389 Sunseeds 7 122 31 7 8
5 Greensleeves HarrisMoran 7 113 32 7 7
6 SRQS-2646 Sunseeds 7 144 42 5 7
7 Dasher II Seminis 6 112 33 7 8
8 Revenue (4289) HarrisMoran 6 60 28 5 7
9 SCU-6601 SakataSeed 6 79 21 7 8
10 Panther(3727) Sunseeds 6 50 24 6 7
11 Prolific SakataSeed 5 59 18 7 8
12 SRQS-2645 Sunseeds 5 94 28 6 8
13 Daytona Seminis 5 81 32 6 7
14 K7-605 SakataSeed 5 56 23 6 7
15 GeneralLee(4440 HarrisMoran 5 141 33 7 8
16 Turbo Seminis 5 60 22 7 8
17 Thunder(1700) Seminis 5 152 40 7 7
18 XP-1825 Seminis 4 67 19 6 7
19 Poinsett 76 CornellUniv 3 55 23 6 8
20 XP-1824 Seminis 3 55 29 5 7
21 Ashley Check 2 7 4 5 6
_________________________________________________________________________________
LSD (5%) 3 53 18 2 1
Mean 5 86 28 6 8
CV (%) 31 38 40 17 32
_________________________________________________________________________________
z Gynoecious rating (1 = androecious, 2-3 = andromonoecious, 4-6 = monoecious,
7-8 = predominately gynoecious, 9 = gynoecious).
y Early yield is weight of Fancy+No.1 grade fruit produced in harvests 1 and 2.
x Earliness is the percent of the yield (Fancy + No.1 grade fruit)
of 6 harvests that was produced in harvests 1 and 2.
wVine size & color are rated 1 (small or yellow green) to 9 (large or dark green).
Correlation (Marketable yield with gynoecious rating) = 0.22ns
Table 29. Stage 3 spring slicer trial - disease ratings (cultigens ranked
by GSB resistance).z
_________________________________________________________________________________
Cultivar Seed Downy
Rank or line source mildew
_________________________________________________________________________________
1 Revenue (4289) HarrisMoran 1.0
2 SRQS-2644 Sunseeds 1.7
3 Dasher II Seminis 1.7
4 SCU-6601 SakataSeed 1.7
5 Thunder(1700) Seminis 1.7
6 SRQS-2387 Sunseeds 2.0
7 Indy Seminis 2.0
8 Prolific SakataSeed 2.0
9 Turbo Seminis 2.0
10 XP-1825 Seminis 2.0
11 SRQS-2646 Sunseeds 2.3
12 Daytona Seminis 2.3
13 GeneralLee(4440 HarrisMoran 2.3
14 Poinsett 76 CornellUniv 2.3
15 SRQS-2645 Sunseeds 2.7
16 K7-605 SakataSeed 2.7
17 XP-1824 Seminis 2.7
18 Greensleeves HarrisMoran 3.0
19 Panther(3727) Sunseeds 3.0
20 Ashley Check 3.0
21 SRQS-2389 Sunseeds 3.7
_________________________________________________________________________________
LSD (5%) 2.0
Mean 2.3
CV (%) 55.1
_________________________________________________________________________________
z Disease rated 0 to 9 (0=none, 1-2=trace, 3-4=slight, 5-6=moderate, 7-8=advanced,
9=plant dead).
Correlation (Marketable yield with disease rating) = -0.16ns
Table 30. Stage 3 spring slicer trial - selection indexes (cultigens ranked
by SWI1).z
_________________________________________________________________________________
Simple weighted Average rank
Cultivar Seed indexes indexes___
Rank or line source SWI1 SWI2 ARI1 ARI2
_________________________________________________________________________________
1 Thunder(1700) Seminis 9.8 8.5 6.9 6.7
2 GeneralLee(4440 HarrisMoran 9.4 8.1 8.0 7.9
3 SRQS-2389 Sunseeds 9.1 8.0 7.9 8.7
4 SRQS-2646 Sunseeds 8.7 7.6 9.4 8.8
5 Greensleeves HarrisMoran 8.7 7.7 7.8 8.6
6 Dasher II Seminis 8.7 7.7 9.7 9.4
7 SCU-6601 SakataSeed 8.4 7.6 9.1 9.3
8 SRQS-2644 Sunseeds 8.2 7.3 10.6 9.7
9 SRQS-2387 Sunseeds 7.9 7.0 11.2 10.2
10 Daytona Seminis 7.8 7.1 10.1 10.7
11 Turbo Seminis 7.2 6.6 9.1 9.7
12 Indy Seminis 7.2 6.6 11.0 11.0
13 SRQS-2645 Sunseeds 7.2 6.4 12.1 12.0
14 Prolific SakataSeed 7.0 6.4 11.0 11.3
15 XP-1825 Seminis 6.9 6.2 11.9 12.1
16 Revenue (4289) HarrisMoran 6.6 6.1 10.6 10.4
17 XP-1824 Seminis 6.1 5.7 12.8 13.0
18 Panther(3727) Sunseeds 6.0 5.6 14.5 14.8
19 Poinsett 76 CornellUniv 5.9 5.5 15.4 14.7
20 K7-605 SakataSeed 5.7 5.2 16.9 16.0
21 Ashley Check 4.7 4.3 14.9 16.0
_________________________________________________________________________________
LSD (5%) 1.8 1.4 4.0 3.8
Mean 7.5 6.7 11.0 11.0
CV (%) 14.8 12.8 22.2 21.0
_________________________________________________________________________________
z SWI is simple weighted index calculated from the performance of a cultigen for
yield; earliness; fruit shape, seedcell size and overall impression; and disease
resistance. The index is calculated with 2 different methods of weighting each
trait (10 is best, 1 is worst).
ARI is the average ranking of each cultigen for yield, earliness, fruit quality
and disease resistance. The index is calculated with 2 different sets of
secondary traits added in with the primary traits (1 is best).
Correlation (Marketable yield with SWI1) = 0.95**
Correlation (Marketable yield with ARI1) = -0.65**