NCSU Cucumber Breeding Report - 2001
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
2001
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 21 May, and harvested 6 times
(Mondays and Thursdays) between 9 and 26 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 XP3501217 Seminis
2 SCU 6601 Sakata
3 General Lee (4440) HarrisMoran
4 SRQS-2653 SunSeeds
5 EX4674277 Seminis
6 SRQS-2387 SunSeeds
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 SCU 6601 Sakata 177 311 46 19 22
2 GeneralLee4440 HarrisMoran 163 294 46 16 20
3 SRQS-2387 SunSeeds 148 305 31 36 20
4 XP3501217 Seminis 146 324 32 27 20
5 SRQS-2653 SunSeeds 134 314 28 34 22
6 Poinsett 76 CornellUniv 125 267 35 25 21
7 Ashley Check 124 241 40 24 21
8 Speedway Seminis 118 253 35 21 15
9 EX4674277 Seminis 116 270 33 23 22
10 Dasher II Seminis 86 202 29 29 19
11 Marketmore 76 Check 84 202 35 18 21
12 HMX-8416 HarrisMoran 79 211 26 30 18
13 Cherokee 7 Check 78 171 32 30 5
14 EX4675898 Seminis 61 189 20 38 19
_________________________________________________________________________________
LSD (5%) 70 106 18 13 3
Mean 117 254 34 26 19
CV (%) 36 25 26 30 11
_________________________________________________________________________________
Correlation (Marketable yield with % culls) = -0.36*
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 XP3501217 Seminis 126 38 158 48 178 54 232 71 292 89
2 SRQS-2653 SunSeeds 47 15 124 38 169 54 197 63 270 87
3 EX4674277 Seminis 62 21 112 39 149 53 182 65 228 82
4 SCU 6601 Sakata 71 24 106 34 181 58 236 76 273 88
5 Speedway Seminis 74 31 102 41 137 52 187 75 232 91
6 EX4675898 Seminis 55 31 85 46 104 56 130 70 162 86
7 GeneralLee4440 HarrisMoran 23 8 85 29 147 50 170 57 220 74
8 SRQS-2387 SunSeeds 58 19 82 27 163 54 222 73 269 88
9 HMX-8416 HarrisMoran 56 28 74 36 134 62 156 74 187 89
10 Ashley Check 16 6 61 24 98 40 141 59 205 85
11 Cherokee 7 Check 39 25 61 37 79 47 121 72 151 88
12 Dasher II Seminis 34 19 56 29 103 51 128 64 168 84
13 Poinsett 76 CornellUniv 22 9 37 14 114 41 171 65 221 84
14 Marketmore 76 Check 3 3 13 7 77 40 112 55 164 79
________________________________________________________________________________
LSD (5%) 44 18 56 15 74 15 73 14 101 12
Mean 49 20 83 32 131 51 170 67 217 85
CV (%) 54 53 41 27 33 18 25 12 28 8
________________________________________________________________________________
Correlation (Marketable yield with yield in harvests 1-2) = 0.38*
Correlation (Marketable yield with % of yield in harvests 1-2) = -0.11ns
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 SCU 6601 Sakata 7.4 7 8 7 8
2 GeneralLee4440 HarrisMoran 7.3 8 8 6 8
3 Dasher II Seminis 7.1 7 8 7 7
4 Marketmore 76 Check 6.9 8 8 5 8
5 XP3501217 Seminis 6.7 7 8 6 7
6 Speedway Seminis 6.7 7 8 6 7
7 HMX-8416 HarrisMoran 6.7 6 8 8 6
8 SRQS-2387 SunSeeds 6.6 7 8 6 7
9 Cherokee 7 Check 6.4 7 7 6 7
10 EX4674277 Seminis 6.3 7 8 5 7
11 Poinsett 76 CornellUniv 6.3 7 8 5 7
12 SRQS-2653 SunSeeds 6.1 6 8 6 6
13 Ashley Check 5.8 6 7 6 6
14 EX4675898 Seminis 5.3 5 7 6 5
_________________________________________________________________________________
LSD (5%) 1.0 1 1 1 1
Mean 6.5 7 8 6 7
CV (%) 9.1 10 8 13 11
_________________________________________________________________________________
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) = -0.04ns
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 SCU 6601 Sakata 8.5 2.2 0.91 D K K K T T
2 GeneralLee4440 HarrisMoran 8.1 2.1 0.78 K T T H K K
3 Dasher II Seminis 8.3 2.1 0.80 T T K H K T
4 Marketmore 76 Check 8.4 2.1 0.88 T K K K M M
5 XP3501217 Seminis 8.8 2.1 0.84 T T K K K T
6 Speedway Seminis 8.5 2.2 0.93 H H H K T A
7 HMX-8416 HarrisMoran 8.9 2.0 0.85 M T K T K T
8 SRQS-2387 SunSeeds 8.4 2.1 1.13 H K K T T M
9 Cherokee 7 Check 7.7 2.2 0.80 K H H T T M
10 EX4674277 Seminis 8.4 2.1 0.92 T T K H K M
11 Poinsett 76 CornellUniv 7.8 2.1 0.76 H K H K H K
12 SRQS-2653 SunSeeds 9.0 2.1 0.95 I T A D A I
13 Ashley Check 8.4 2.2 0.83 A M M D I I
14 EX4675898 Seminis 8.4 2.1 1.05 H H M M M H
_________________________________________________________________________________
LSD (5%) 0.6 0.2 0.26
Mean 8.4 2.1 0.89
CV (%) 4.8 5.3 17.73
_________________________________________________________________________________
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 SCU 6601 Sakata 14 3 0 16
2 GeneralLee4440 HarrisMoran 16 5 1 17
3 Dasher II Seminis 20 4 1 20
4 Marketmore 76 Check 19 3 3 15
5 XP3501217 Seminis 20 4 1 16
6 Speedway Seminis 21 4 0 14
7 HMX-8416 HarrisMoran 19 3 0 14
8 SRQS-2387 SunSeeds 15 2 1 15
9 Cherokee 7 Check 18 4 1 14
10 EX4674277 Seminis 15 4 2 16
11 Poinsett 76 CornellUniv 12 3 1 17
12 SRQS-2653 SunSeeds 22 4 2 15
13 Ashley Check 15 3 4 15
14 EX4675898 Seminis 19 4 1 15
_________________________________________________________________________________
LSD (5%) 10 3 3 4
Mean 17 4 1 15
CV (%) 34 54 117 14
_________________________________________________________________________________
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) = 0.39*
Correlation (Weight loss with firmness) = -0.30*
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 XP3501217 Seminis 8 158 48 8 6
2 SRQS-2653 SunSeeds 8 124 38 8 8
3 HMX-8416 HarrisMoran 8 74 36 6 6
4 Cherokee 7 Check 7 61 37 7 8
5 EX4674277 Seminis 7 112 39 7 6
6 EX4675898 Seminis 7 85 46 7 6
7 Speedway Seminis 7 102 41 6 7
8 Dasher II Seminis 7 56 29 6 7
9 Poinsett 76 CornellUniv 6 37 14 7 8
10 SCU 6601 Sakata 5 106 34 7 7
11 GeneralLee4440 HarrisMoran 5 85 29 7 7
12 Ashley Check 5 61 24 7 7
13 SRQS-2387 SunSeeds 5 82 27 8 8
14 Marketmore 76 Check 3 13 7 5 6
_________________________________________________________________________________
LSD (5%) 2 56 15 2 2
Mean 6 83 32 7 7
CV (%) 24 41 27 18 14
_________________________________________________________________________________
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) = 0.00ns
Table 29. Stage 3 spring slicer trial - disease ratings (cultigens ranked
by GSB resistance).z
_________________________________________________________________________________
Cultivar Seed Anthrac-
Rank or line source nose
_________________________________________________________________________________
1 HMX-8416 HarrisMoran 1.3
2 SCU 6601 Sakata 1.3
3 GeneralLee4440 HarrisMoran 1.7
4 Cherokee 7 Check 2.0
5 XP3501217 Seminis 2.3
6 Poinsett 76 CornellUniv 3.0
7 EX4674277 Seminis 3.3
8 EX4675898 Seminis 3.3
9 Marketmore 76 Check 3.7
10 SRQS-2653 SunSeeds 4.3
11 Dasher II Seminis 4.3
12 Ashley Check 4.3
13 SRQS-2387 SunSeeds 4.3
14 Speedway Seminis 5.7
_________________________________________________________________________________
LSD (5%) 3.0
Mean 3.2
CV (%) 55.8
_________________________________________________________________________________
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 anthracnose rating) = 0.01ns
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 XP3501217 Seminis 8.3 7.3 5.5 4.9
2 SCU 6601 Sakata 8.2 7.3 3.8 4.2
3 GeneralLee4440 HarrisMoran 7.6 6.9 4.7 5.2
4 SRQS-2653 SunSeeds 7.2 6.3 8.0 7.6
5 EX4674277 Seminis 6.9 6.1 7.5 7.1
6 SRQS-2387 SunSeeds 6.8 6.1 7.3 7.7
7 Speedway Seminis 6.5 5.8 7.8 7.9
8 HMX-8416 HarrisMoran 6.1 5.7 7.4 7.2
9 Poinsett 76 CornellUniv 5.9 5.4 8.9 9.0
10 Ashley Check 5.8 5.2 9.8 9.6
11 Cherokee 7 Check 5.6 5.3 8.3 8.0
12 Dasher II Seminis 5.5 5.2 7.7 8.2
13 EX4675898 Seminis 5.3 5.0 9.9 9.1
14 Marketmore 76 Check 4.9 4.6 8.3 9.2
_________________________________________________________________________________
LSD (5%) 1.8 1.4 2.7 2.8
Mean 6.4 5.9 7.5 7.5
CV (%) 16.7 14.1 21.3 22.0
_________________________________________________________________________________
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) = 0.83**
Correlation (Marketable yield with ARI1) = -0.47**