NCSU Cucumber Breeding Report - 2008
Todd C. Wehner
Professor
Tammy L. Ellington
Research Specialist
Department of Horticultural Science
North Carolina State University
Raleigh, NC 27695-7609
Summer (Stage 4) Slicing Cucumber Trial
2008
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 10 July, and harvested 4 times
(Mondays and Thursdays) between 21 August and 8 September.
Data Collection
1. Fruit 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:
01 G57xNC-63 NC StateUniv
02 G57xNC-58 NC StateUniv
03 G57xNC-59 NC StateUniv
04 NC-Sunshine NC StateUniv
05 Cherokee 87 Check
06 G83xNC-62 NC StateUniv
07 G83xNC-63 NC StateUniv
Table 27. Stage 4 summer 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 G57xNC-63 NC StateUniv 206 314 51 22 35
2 G57xNC-58 NC StateUniv 181 256 48 32 31
3 G57xNC-59 NC StateUniv 176 224 57 27 35
4 Cherokee 87 Check 127 196 43 33 35
5 NC-Sunshine NC StateUniv 112 162 46 34 31
6 Poinsett 76 CornellUniv 109 179 47 28 33
7 PX147-10830 Seminis 99 147 44 35 30
8 G83xNC-58 NC StateUniv 99 150 37 43 35
9 Dasher II Seminis 97 145 44 32 35
10 G83xNC-62 NC StateUniv 95 150 39 37 34
11 G83xNC-63 NC StateUniv 85 132 27 57 30
12 HMX-7425 Harris Moran 79 118 39 37 35
13 G57xNC-62 NC StateUniv 79 126 31 49 35
14 NC-Stratford NC StateUniv 74 127 30 46 34
15 EGSB-160 EmeraldSeeds 65 107 27 53 33
16 Ashley Check 61 100 40 34 28
17 G83xNC-59 NC StateUniv 61 111 30 48 35
18 PX147-10895 Seminis 28 49 30 46 31
19 EGSB-118 EmeraldSeeds 21 39 14 68 35
20 EGSB-152 EmeraldSeeds 19 44 18 64 32
_________________________________________________________________________________
CV (%) 54 49 32 33 9
Mean 94 144 37 41 33
LSD (5%) 83 116 20 22 5
_________________________________________________________________________________
Correlation (Marketable yield with % culls) = -0.78ns
Table 28. Stage 4 summer 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 G57xNC-63 NC StateUniv 102 32 181 58 237 75 287 92 312 99
2 G57xNC-58 NC StateUniv 69 24 125 47 187 72 244 95 256 100
3 NC-Sunshine NC StateUniv 69 42 98 60 130 79 158 97 162 100
4 G57xNC-59 NC StateUniv 33 15 91 42 144 65 194 87 218 98
5 G57xNC-62 NC StateUniv 36 38 80 70 100 82 124 99 126 100
6 HMX-7425 Harris Moran 28 18 72 70 98 83 113 94 116 96
7 G83xNC-63 NC StateUniv 19 11 68 70 100 87 126 98 128 99
8 NC-Stratford NC StateUniv 23 18 61 53 74 62 118 93 126 99
9 G83xNC-62 NC StateUniv 11 6 60 40 101 66 137 93 150 100
10 Cherokee 87 Check 17 8 53 27 115 59 165 84 189 96
11 Dasher II Seminis 23 17 50 47 108 80 141 98 144 100
12 G83xNC-58 NC StateUniv 12 8 46 31 93 60 136 92 148 99
13 G83xNC-59 NC StateUniv 7 6 25 22 66 61 105 94 110 100
14 Ashley Check 5 5 24 23 59 58 89 90 100 100
15 PX147-10830 Seminis 14 21 23 25 54 42 127 77 144 98
16 Poinsett 76 CornellUniv 1 1 21 10 72 39 144 83 171 96
17 EGSB-160 EmeraldSeeds 1 1 17 21 66 65 101 96 107 100
18 PX147-10895 Seminis 3 5 12 35 25 51 40 85 48 98
19 EGSB-152 EmeraldSeeds 0 0 6 12 22 53 41 96 44 100
20 EGSB-118 EmeraldSeeds 0 0 1 1 10 10 30 50 38 66
_________________________________________________________________________________
CV (%) 87 70 55 39 51 21 49 15 49 13
Mean 24 14 56 38 93 62 131 90 142 97
LSD (5%) 34 16 51 25 78 21 107 22 114 22
_________________________________________________________________________________
Correlation (Marketable yield with yield in harvests 1-2) = 0.81**
Correlation (Marketable yield with % of yield in harvests 1-2) = 0.04ns
Table 29. Stage 4 summer 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 PX147-10830 Seminis 7.4 8 8 7 7
2 Dasher II Seminis 7.3 7 8 8 8
3 G83xNC-63 NC StateUniv 7.2 7 8 7 8
4 HMX-7425 Harris Moran 7.1 7 8 7 7
5 EGSB-118 EmeraldSeeds 7.0 8 7 7 7
6 PX147-10895 Seminis 7.0 7 7 7 7
7 EGSB-152 EmeraldSeeds 6.9 8 9 6 7
8 NC-Sunshine NC StateUniv 6.9 7 8 6 8
9 G83xNC-62 NC StateUniv 6.8 7 8 6 7
10 G83xNC-58 NC StateUniv 6.8 7 8 6 7
11 G83xNC-59 NC StateUniv 6.7 7 8 7 6
12 Poinsett 76 CornellUniv 6.6 7 8 6 7
13 EGSB-160 EmeraldSeeds 6.4 6 7 6 7
14 NC-Stratford NC StateUniv 6.2 6 7 6 7
15 G57xNC-58 NC StateUniv 6.1 6 7 6 7
16 Ashley Check 6.1 6 6 6 6
17 Cherokee 87 Check 6.1 6 7 6 6
18 G57xNC-63 NC StateUniv 5.3 6 5 5 5
19 G57xNC-62 NC StateUniv 5.2 5 6 5 6
20 G57xNC-59 NC StateUniv 5.1 5 5 5 5
_________________________________________________________________________________
CV (%) 9.2 13 13 13 13
Mean 6.5 7 7 6 7
LSD (5%) 1.0 1 2 1 1
_________________________________________________________________________________
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) = -0.19ns
Table 30. Stage 4 summer slicer trial - fruit dimensions and comments
(cultigens ranked by average quality rating).z
_________________________________________________________________________________
Cultivar Seed Length Diameter Wt. Defect1° Defect2°
Rank or line source (inch) (inch) (lb.) 2 4 6 2 4 6
_________________________________________________________________________________
1 PX147-10830 Seminis 8.2 2.0 0.75 K H K T I G
2 Dasher II Seminis 7.9 2.0 0.75 K K K K C H
3 G83xNC-63 NC StateUniv 8.2 2.1 0.88 K K K K T K
4 HMX-7425 Harris Moran 8.0 1.9 0.72 K K H T C K
5 EGSB-118 EmeraldSeeds 8.2 2.0 0.83 K K T C C K
6 PX147-10895 Seminis 7.5 1.8 0.67 K H K G I T
7 EGSB-152 EmeraldSeeds 8.3 1.9 0.73 G K G K K K
8 NC-Sunshine NC StateUniv 8.3 2.2 0.96 K K T K C K
9 G83xNC-62 NC StateUniv 8.1 2.2 0.90 O C K K V T
10 G83xNC-58 NC StateUniv 7.9 2.2 0.90 K K H O D K
11 G83xNC-59 NC StateUniv 7.9 2.0 0.76 H K K K T K
12 Poinsett 76 CornellUniv 7.2 2.1 0.76 K K K H H K
13 EGSB-160 EmeraldSeeds 8.6 1.9 0.78 T K K G T T
14 NC-Stratford NC StateUniv 7.8 2.3 0.88 K K H H I K
15 G57xNC-58 NC StateUniv 7.8 2.3 1.01 K K H M I M
16 Ashley Check 7.3 2.1 0.74 H K T M M M
17 Cherokee 87 Check 7.8 2.2 0.89 K K T M V M
18 G57xNC-63 NC StateUniv 7.4 2.1 0.87 K H H M V M
19 G57xNC-62 NC StateUniv 7.5 2.2 0.86 K K H M V M
20 G57xNC-59 NC StateUniv 7.0 2.3 0.87 H K H M V M
_________________________________________________________________________________
CV (%) 4.8 6.2 12.65
Mean 7.9 2.1 0.83
LSD (5%) 0.6 0.2 0.17
_________________________________________________________________________________
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 31. Stage 4 summer 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 Cherokee 87 Check 7 53 27 8 7
2 HMX-7425 Harris Moran 7 72 70 8 6
3 PX147-10830 Seminis 6 23 25 8 7
4 EGSB-160 EmeraldSeeds 6 17 21 7 7
5 G57xNC-63 NC StateUniv 6 181 58 8 7
6 G57xNC-58 NC StateUniv 6 125 47 8 8
7 EGSB-152 EmeraldSeeds 6 6 12 7 7
8 G83xNC-63 NC StateUniv 5 68 70 8 6
9 G57xNC-62 NC StateUniv 5 80 70 7 6
10 NC-Sunshine NC StateUniv 5 98 60 7 6
11 Dasher II Seminis 5 50 47 8 7
12 PX147-10895 Seminis 5 12 35 8 8
13 G83xNC-62 NC StateUniv 4 60 40 7 7
14 Ashley Check 4 24 23 7 7
15 NC-Stratford NC StateUniv 4 61 53 6 6
16 G57xNC-59 NC StateUniv 4 91 42 8 9
17 G83xNC-58 NC StateUniv 4 46 31 8 7
18 Poinsett 76 CornellUniv 4 21 10 8 9
19 G83xNC-59 NC StateUniv 4 25 22 7 7
20 EGSB-118 EmeraldSeeds 3 1 1 7 7
_________________________________________________________________________________
CV (%) 26 55 39 13 13
Mean 5 56 38 7 7
LSD (5%) 2 51 25 2 1
_________________________________________________________________________________
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.
w Vine size & color are rated 1 (small or yellow green) to 9 (large or
dark green).
Correlation (Marketable yield with gynoecious rating) = 0.38**
Table 32. Stage 4 summer slicer trial - disease ratings (cultigens ranked
by average disease resistance).z
_________________________________________________________________________________
Cultivar Seed Average Downy Anthrac
Rank or line source disease mildew -nose
_________________________________________________________________________________
1 Cherokee 87 Check 2.5 1 4
2 Poinsett 76 CornellUniv 2.5 1 4
3 G83xNC-62 NC StateUniv 3.3 2 5
4 G57xNC-59 NC StateUniv 3.3 2 5
5 G57xNC-63 NC StateUniv 3.5 3 4
6 EGSB-160 EmeraldSeeds 3.7 2 6
7 G83xNC-59 NC StateUniv 3.7 2 5
8 NC-Stratford NC StateUniv 3.7 3 5
9 G57xNC-62 NC StateUniv 3.8 2 6
10 G83xNC-63 NC StateUniv 3.8 2 6
11 G83xNC-58 NC StateUniv 3.8 3 5
12 EGSB-152 EmeraldSeeds 3.8 3 4
13 G57xNC-58 NC StateUniv 4.0 3 5
14 Ashley Check 4.0 3 5
15 NC-Sunshine NC StateUniv 4.0 4 4
16 PX147-10830 Seminis 4.3 2 7
17 EGSB-118 EmeraldSeeds 4.7 3 7
18 Dasher II Seminis 4.8 2 7
19 PX147-10895 Seminis 5.0 2 8
20 HMX-7425 Harris Moran 5.2 3 8
_________________________________________________________________________________
CV (%) 20.2 33 23
Mean 3.9 2 5
LSD (5%) 1.3 1 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 disease rating) = -0.42**
Table 33. Stage 4 summer 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 G57xNC-63 NC StateUniv 8.7 7.4 10.9 8.7
2 G57xNC-58 NC StateUniv 7.6 6.6 9.8 9.1
3 G57xNC-59 NC StateUniv 6.7 6.0 11.7 10.0
4 NC-Sunshine NC StateUniv 6.4 5.9 9.4 9.0
5 Cherokee 87 Check 5.9 5.4 9.7 8.9
6 G83xNC-62 NC StateUniv 5.7 5.3 8.2 8.3
7 G83xNC-63 NC StateUniv 5.7 5.7 7.8 8.1
8 G83xNC-58 NC StateUniv 5.4 5.0 9.5 9.8
9 HMX-7425 Harris Moran 5.4 5.5 9.4 9.9
10 Dasher II Seminis 5.4 5.3 8.5 9.7
11 Poinsett 76 CornellUniv 5.4 4.8 9.9 9.6
12 PX147-10830 Seminis 5.2 5.0 8.2 9.4
13 G57xNC-62 NC StateUniv 5.1 5.2 12.9 11.8
14 NC-Stratford NC StateUniv 5.1 5.0 11.7 10.7
15 G83xNC-59 NC StateUniv 4.6 4.3 11.8 11.9
16 EGSB-160 EmeraldSeeds 4.3 4.2 11.5 11.9
17 Ashley Check 4.2 4.0 12.8 12.9
18 EGSB-152 EmeraldSeeds 3.7 3.5 12.8 13.6
19 PX147-10895 Seminis 3.7 3.9 11.1 12.5
20 EGSB-118 EmeraldSeeds 3.5 3.2 12.5 14.2
_________________________________________________________________________________
CV (%) 23.2 16.1 21.9 19.4
Mean 5.4 5.1 10.5 10.5
LSD (5%) 2.1 1.3 3.8 3.4
_________________________________________________________________________________
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) = 0.96**
Correlation (Marketable yield with ARI1) = -0.47**