NCSU Cucumber Breeding Report - 2002
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
2002
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 18 April, and harvested 6 times
(Mondays and Thursdays) between 17 June and 5 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 NC-Stratford NCStateUniv
2 Intimidator Seminis
3 SVR14710464 Seminis
4 SVR14710463 Seminis
5 NC-Sunshine NCStateUniv
6 SVR14710462 Seminis
7 NC-Star NCStateUniv
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 Intimidator Seminis 143 273 31 38 25
2 SVR14710464 Seminis 140 323 34 21 22
3 NC-Stratford NCStateUniv 117 292 27 33 23
4 SVR14710463 Seminis 117 256 32 29 21
5 SRQS-2387 SunSeeds 109 254 28 37 16
6 SRQS-2389 SunSeeds 96 292 21 35 19
7 NC-Sunshine NCStateUniv 95 222 27 36 24
8 SVR14710461 Seminis 94 254 21 42 20
9 SVR14710462 Seminis 92 250 25 31 19
10 SRQS-2983 SunSeeds 79 244 23 30 21
11 SVR14710465 Seminis 74 174 33 22 12
12 NC-Star NCStateUniv 73 207 18 46 24
13 HMX-8416 HarrisMoran 64 205 20 35 14
14 EX4675858 Seminis 62 176 22 37 19
15 Poinsett76 CornellUniv 56 197 23 18 16
16 DasherII Seminis 56 226 18 26 21
17 EX4675898 Seminis 52 169 19 40 21
18 NC-Sapphire NCStateUniv 44 220 14 32 20
_________________________________________________________________________________
LSD (5%) 61 95 13 13 6
Mean 87 235 24 33 20
CV (%) 42 24 34 24 18
_________________________________________________________________________________
Correlation (Marketable yield with % culls) = -0.09*
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 Intimidator Seminis 30 9 92 30 124 41 166 59 184 68
2 NC-Stratford NCStateUniv 39 14 91 31 149 50 222 75 251 86
3 NC-Star NCStateUniv 49 24 82 40 109 54 150 72 192 93
4 NC-Sunshine NCStateUniv 21 10 72 33 89 41 172 77 206 93
5 SVR14710461 Seminis 10 3 66 27 90 36 175 70 232 92
6 EX4675898 Seminis 21 13 60 37 82 50 95 57 144 85
7 SVR14710462 Seminis 4 1 60 22 100 39 154 61 202 80
8 HMX-8416 HarrisMoran 4 1 44 18 57 25 118 54 172 85
9 SVR14710463 Seminis 6 1 43 12 57 19 147 58 203 80
10 DasherII Seminis 5 2 42 18 61 27 115 51 169 75
11 EX4675858 Seminis 11 6 39 20 55 28 94 58 129 77
12 SVR14710464 Seminis 5 1 36 10 66 21 172 53 255 78
13 SRQS-2387 SunSeeds 2 1 29 9 48 16 123 43 202 77
14 SRQS-2389 SunSeeds 7 3 24 8 53 18 142 49 239 82
15 NC-Sapphire NCStateUniv 2 1 20 9 82 35 139 64 180 81
16 SRQS-2983 SunSeeds 1 0 13 5 38 16 115 45 200 82
17 SVR14710465 Seminis 0 0 13 9 23 16 98 57 145 84
18 Poinsett76 CornellUniv 0 0 1 0 18 9 50 25 139 71
_________________________________________________________________________________
LSD (5%) 21 9 45 14 56 18 69 19 84 15
Mean 12 5 46 19 72 30 135 57 191 82
CV (%) 107 102 59 46 46 35 31 20 26 11
________________________________________________________________________________
Correlation (Marketable yield with yield in harvests 1-2) = 0.54**
Correlation (Marketable yield with % of yield in harvests 1-2) = 0.16ns
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 SVR14710463 Seminis 7.9 8 9 8 8
2 Poinsett76 CornellUniv 7.6 8 9 8 7
3 SVR14710462 Seminis 7.6 8 9 8 7
4 DasherII Seminis 7.4 8 8 6 8
5 SVR14710464 Seminis 7.4 8 8 7 7
6 HMX-8416 HarrisMoran 7.2 7 7 7 7
7 SRQS-2389 SunSeeds 7.1 7 7 7 7
8 NC-Sunshine NCStateUniv 7.1 7 9 8 7
9 NC-Stratford NCStateUniv 6.6 6 8 6 7
10 SVR14710461 Seminis 6.6 7 8 6 7
11 EX4675898 Seminis 6.3 7 8 6 6
12 SRQS-2387 SunSeeds 6.3 7 8 6 7
13 EX4675858 Seminis 6.2 6 7 6 6
14 SVR14710465 Seminis 6.1 7 8 5 7
15 SRQS-2983 SunSeeds 5.9 6 8 5 6
16 Intimidator Seminis 5.7 6 7 6 6
17 NC-Sapphire NCStateUniv 5.6 6 8 6 5
18 NC-Star NCStateUniv 5.4 6 9 5 6
_________________________________________________________________________________
LSD (5%) 1.3 2 1 1 2
Mean 6.6 7 8 6 7
CV (%) 12.5 18 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) = 0.07ns
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 SVR14710463 Seminis 9.1 2.2 0.89 T K K K C H
2 Poinsett76 CornellUniv 7.4 2.2 0.75 H H H K K K
3 SVR14710462 Seminis 9.1 2.3 1.05 K K H K T K
4 DasherII Seminis 9.0 2.2 0.98 T K K K H K
5 SVR14710464 Seminis 9.6 2.2 1.02 K T K T M K
6 HMX-8416 HarrisMoran 9.7 2.2 1.02 T G G K R T
7 SRQS-2389 SunSeeds 9.4 2.3 1.08 M K K H T H
8 NC-Sunshine NCStateUniv 8.6 2.3 0.96 K K H T D D
9 NC-Stratford NCStateUniv 9.7 2.4 1.26 H O K K H H
10 SVR14710461 Seminis 9.9 2.1 1.16 D C D K K C
11 EX4675898 Seminis 9.0 2.2 0.92 T T T K G H
12 SRQS-2387 SunSeeds 9.0 2.2 0.94 H K C T G T
13 EX4675858 Seminis 9.5 2.3 0.98 T T T D G K
14 SVR14710465 Seminis 8.5 2.1 0.85 K S H T T K
15 SRQS-2983 SunSeeds 9.6 2.2 0.95 C T T T G G
16 Intimidator Seminis 9.4 2.2 1.01 D M H M T T
17 NC-Sapphire NCStateUniv 8.1 2.3 0.88 H H H T K K
18 NC-Star NCStateUniv 8.6 2.3 0.98 H H K D C H
_________________________________________________________________________________
LSD (5%) 0.6 0.2 0.16
Mean 9.1 2.2 0.98
CV (%) 4.3 5.0 9.87
_________________________________________________________________________________
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 SVR14710463 Seminis 14 2 1 18
2 Poinsett76 CornellUniv 12 2 1 13
3 SVR14710462 Seminis 15 3 2 18
4 DasherII Seminis 12 2 1 18
5 SVR14710464 Seminis 15 3 1 19
6 HMX-8416 HarrisMoran 16 2 1 16
7 SRQS-2389 SunSeeds 12 5 3 17
8 NC-Sunshine NCStateUniv 15 3 1 15
9 NC-Stratford NCStateUniv 15 3 1 15
10 SVR14710461 Seminis 17 4 4 18
11 EX4675898 Seminis 16 5 3 20
12 SRQS-2387 SunSeeds 20 5 4 14
13 EX4675858 Seminis 16 4 2 17
14 SVR14710465 Seminis 15 2 1 17
15 SRQS-2983 SunSeeds 17 3 1 19
16 Intimidator Seminis 15 3 2 20
17 NC-Sapphire NCStateUniv 15 2 2 14
18 NC-Star(64x6 NCStateUniv 16 2 1 15
_________________________________________________________________________________
LSD (5%) 7 2 2 4
Mean 15 3 2 17
CV (%) 27 46 77 15
_________________________________________________________________________________
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) = 0.17*
Correlation (Weight loss with firmness) = -0.02ns
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 EX4675898 Seminis 9 60 37 8 8
2 HMX-8416 HarrisMoran 9 44 18 7 7
3 SVR14710462 Seminis 9 60 22 7 8
4 SVR14710461 Seminis 8 66 27 9 8
5 Intimidator Seminis 8 92 30 8 8
6 EX4675858 Seminis 8 39 20 7 8
7 SVR14710464 Seminis 8 36 10 8 9
8 SRQS-2389 SunSeeds 8 24 8 7 9
9 SRQS-2387 SunSeeds 8 29 9 6 8
10 DasherII Seminis 7 42 18 6 9
11 SVR14710465 Seminis 7 13 9 6 9
12 SRQS-2983 SunSeeds 7 13 5 6 8
13 SVR14710463 Seminis 6 43 12 8 9
14 NC-Sunshine NCStateUniv 4 72 33 5 7
15 Poinsett76 CornellUniv 4 1 0 5 9
16 NC-Star NCStateUniv 4 82 40 5 7
17 NC-Stratford NCStateUniv 3 91 31 6 8
18 NC-Sapphire NCStateUniv 3 20 9 6 6
_________________________________________________________________________________
LSD (5%) 2 45 14 1 1
Mean 7 46 19 7 8
CV (%) 21 59 46 10 10
_________________________________________________________________________________
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) = -0.02ns
Table 29. Stage 3 spring slicer trial - disease ratings (cultigens ranked
by anthracnose resistance).z
_________________________________________________________________________________
Cultivar Seed Anthrac-
Rank or line source nose
_________________________________________________________________________________
1 Poinsett76 CornellUniv 1.3
2 HMX-8416 HarrisMoran 1.7
3 DasherII Seminis 1.7
4 NC-Stratford NCStateUniv 1.7
5 NC-Star NCStateUniv 2.0
6 NC-Sapphire NCStateUniv 2.0
7 SVR14710464 Seminis 2.3
8 SVR14710463 Seminis 2.3
9 EX4675858 Seminis 3.0
10 SRQS-2389 SunSeeds 3.0
11 SRQS-2387 SunSeeds 3.0
12 NC-Sunshine NCStateUniv 3.0
13 SVR14710462 Seminis 3.3
14 SVR14710465 Seminis 3.3
15 SRQS-2983 SunSeeds 3.3
16 Intimidator Seminis 3.7
17 EX4675898 Seminis 4.3
18 SVR14710461 Seminis 5.0
_________________________________________________________________________________
LSD (5%) 1.6
Mean 2.7
CV (%) 35.2
_________________________________________________________________________________
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) = -0.27*
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 NC-Stratford NCStateUniv 6.9 6.3 7.2 6.4
2 Intimidator Seminis 6.6 5.9 10.6 9.8
3 SVR14710464 Seminis 6.6 6.0 6.8 7.1
4 SVR14710463 Seminis 6.4 5.8 5.9 7.1
5 NC-Sunshine NCStateUniv 6.2 5.7 7.8 8.3
6 SVR14710462 Seminis 6.1 5.6 7.4 8.3
7 NC-Star NCStateUniv 5.8 5.4 11.0 9.5
8 SVR14710461 Seminis 5.7 5.2 10.2 10.1
9 SRQS-2387 SunSeeds 5.5 5.1 10.1 10.3
10 DasherII Seminis 5.5 5.2 7.7 7.6
11 SRQS-2389 SunSeeds 5.5 5.2 9.1 9.3
12 HMX-8416 HarrisMoran 5.5 5.1 7.9 8.2
13 Poinsett76 CornellUniv 5.0 4.7 8.4 9.4
14 EX4675898 Seminis 4.9 4.7 11.9 11.5
15 EX4675858 Seminis 4.9 4.6 11.4 11.2
16 SRQS-2983 SunSeeds 4.7 4.4 12.5 12.1
17 SVR14710465 Seminis 4.5 4.3 12.3 12.9
18 NC-Sapphire NCStateUniv 4.5 4.2 12.8 12.0
_________________________________________________________________________________
LSD (5%) 1.5 1.2 3.7 3.7
Mean 5.6 5.1 9.5 9.5
CV (%) 17.1 15.0 23.9 23.6
_________________________________________________________________________________
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) = 0.80**
Correlation (Marketable yield with ARI1) = -0.40**