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
Spring (Stage 3) 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 1 May, and harvested 6 times
(Mondays and Thursdays) between 19 June and 7 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:
01 NC-Sunshine NC StateUniv
02 EGSB-160 EmeraldSeeds
03 Cherokee 87 Check
04 G57xNC-58 NC StateUniv
05 NC-Stratford NC StateUniv
06 G57xNC-59 NC StateUniv
07 G83xNC-63 NC StateUniv
Table 20. 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 Cherokee 87 Check 96 171 44 23 18
2 G57xNC-59 NC StateUniv 93 171 45 18 22
3 NC-Sunshine NC StateUniv 88 184 36 26 25
4 G57xNC-58 NC StateUniv 88 173 39 24 25
5 EGSB-160 EmeraldSeeds 80 146 45 16 26
6 G57xNC-62 NC StateUniv 79 136 41 31 25
7 G83xNC-63 NC StateUniv 55 142 27 30 26
8 G57xNC-63 NC StateUniv 54 112 39 22 21
9 NC-Stratford NC StateUniv 54 142 29 34 23
10 Dasher II Seminis 53 124 33 22 25
11 G83xNC-58 NC StateUniv 51 124 29 31 24
12 EGSB-152 EmeraldSeeds 51 91 37 34 25
13 Ashley Check 46 98 33 22 17
14 G83xNC-59 NC StateUniv 42 74 41 28 22
15 G83xNC-62 NC StateUniv 42 105 27 35 22
16 PX147-10895 Seminis 36 89 27 26 25
17 Poinsett 76 CornellUniv 34 83 26 38 24
18 PX147-10830 Seminis 33 100 23 26 23
19 HMX-7425 Harris Moran 23 58 25 28 26
20 EGSB-118 EmeraldSeeds 12 27 43 16 23
_________________________________________________________________________________
CV (%) 38 35 30 30 15
Mean 55 117 34 26 23
LSD (5%) 35 67 17 13 6
_________________________________________________________________________________
Correlation (Marketable yield with % culls) = -0.29*
Table 21. 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 NC-Sunshine NC StateUniv 29 14 94 51 125 68 144 78 163 88
2 G57xNC-58 NC StateUniv 23 11 78 45 112 66 145 85 153 89
3 NC-Stratford NC StateUniv 23 12 71 39 90 55 101 64 123 82
4 Cherokee 87 Check 25 11 70 36 126 67 142 80 153 87
5 G57xNC-59 NC StateUniv 23 14 69 40 102 60 130 76 150 88
6 G57xNC-62 NC StateUniv 21 13 68 47 91 64 110 80 126 93
7 G83xNC-63 NC StateUniv 19 9 58 30 92 54 116 78 123 86
8 EGSB-160 EmeraldSeeds 14 7 54 30 79 50 95 62 116 77
9 G83xNC-62 NC StateUniv 8 5 40 30 62 54 75 65 94 90
10 G83xNC-58 NC StateUniv 13 7 40 28 78 58 99 77 112 85
11 G57xNC-63 NC StateUniv 6 5 38 33 64 56 84 74 98 87
12 Dasher II Seminis 6 5 23 18 44 34 69 54 95 75
13 G83xNC-59 NC StateUniv 4 5 16 20 36 46 46 59 51 66
14 PX147-10895 Seminis 1 0 15 10 27 17 41 32 60 56
15 PX147-10830 Seminis 2 1 13 12 24 21 41 38 64 61
16 HMX-7425 Harris Moran 1 1 11 14 22 34 33 55 44 69
17 EGSB-152 EmeraldSeeds 1 1 7 6 32 29 52 47 81 90
18 Poinsett 76 CornellUniv 1 1 6 6 25 27 40 46 58 68
19 Ashley Check 0 0 5 4 30 25 48 43 70 65
20 EGSB-118 EmeraldSeeds 0 0 0 0 2 5 4 11 7 22
_________________________________________________________________________________
CV (%) 120 95 66 53 53 34 44 22 40 16
Mean 11 6 39 25 63 45 81 60 97 76
LSD (5%) 22 10 43 22 56 25 59 22 64 20
_________________________________________________________________________________
Correlation (Marketable yield with yield in harvests 1-2) = 0.90**
Correlation (Marketable yield with % of yield in harvests 1-2) = 0.81**
Table 22. 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 EGSB-160 EmeraldSeeds 7.3 7 8 7 8
2 EGSB-152 EmeraldSeeds 7.1 7 8 7 7
3 PX147-10895 Seminis 7.0 7 7 7 7
4 G83xNC-58 NC StateUniv 6.8 7 8 6 7
5 NC-Stratford NC StateUniv 6.6 6 8 7 7
6 G83xNC-63 NC StateUniv 6.4 7 9 7 6
7 PX147-10830 Seminis 6.4 7 8 5 7
8 Dasher II Seminis 6.3 6 6 6 6
9 NC-Sunshine NC StateUniv 6.3 6 8 7 7
10 G83xNC-62 NC StateUniv 6.2 6 8 6 6
11 HMX-7425 Harris Moran 6.1 7 8 5 6
12 G83xNC-59 NC StateUniv 5.8 6 7 5 6
13 EGSB-118 EmeraldSeeds 5.8 6 6 6 6
14 Poinsett 76 CornellUniv 5.4 5 7 5 6
15 Cherokee 87 Check 5.3 5 5 5 5
16 G57xNC-62 NC StateUniv 5.3 5 6 6 5
17 G57xNC-63 NC StateUniv 5.2 5 5 6 5
18 G57xNC-58 NC StateUniv 5.2 4 5 7 5
19 Ashley Check 5.0 5 5 5 5
20 G57xNC-59 NC StateUniv 4.9 5 5 6 4
_________________________________________________________________________________
CV (%) 10.0 13 13 15 15
Mean 6.0 6 7 6 6
LSD (5%) 1.0 1 2 2 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) = 0.14ns
Table 23. Stage 3 spring slicer trial - fruit dimensions and comments
(cultigens ranked by average quality rating).z
_________________________________________________________________________________
Cultivar Seed Length Diameter Wt. Defect 1° Defect 2°
Rank or line source (inch) (inch) (lb.) 2 4 6 2 4 6
_________________________________________________________________________________
1 EGSB-160 EmeraldSeeds 8.4 2.0 0.66 K K D T T H
2 EGSB-152 EmeraldSeeds 8.2 2.1 0.71 M K K H G K
3 PX147-10895 Seminis 8.1 1.9 0.65 G K K C G T
4 G83xNC-58 NC StateUniv 7.2 2.1 0.68 K K D C T H
5 NC-Stratford NC StateUniv 7.4 2.0 0.65 K H K K K H
6 G83xNC-63 NC StateUniv 7.6 2.0 0.65 K K H C T D
7 PX147-10830 Seminis 7.8 1.9 0.63 K K H C T T
8 Dasher II Seminis 7.5 2.1 0.70 K H T T T D
9 NC-Sunshine NC StateUniv 7.5 2.0 0.69 K H D T T H
10 G83xNC-62 NC StateUniv 7.8 1.9 0.69 K D K M T M
11 HMX-7425 Harris Moran 7.7 1.9 0.53 K H D C T H
12 G83xNC-59 NC StateUniv 7.1 2.2 0.59 K D T K T H
13 EGSB-118 EmeraldSeeds 7.7 1.6 0.51 D D D H H H
14 Poinsett 76 CornellUniv 6.7 1.9 0.53 K D H T H K
15 Cherokee 87 Check 7.1 2.0 0.62 M M M K T H
16 G57xNC-62 NC StateUniv 6.8 2.1 0.63 M M M N H H
17 G57xNC-63 NC StateUniv 5.6 1.9 0.53 M M M C H H
18 G57xNC-58 NC StateUniv 6.6 2.0 0.61 M M M K H H
19 Ashley Check 6.9 1.9 0.59 H H M M T H
20 G57xNC-59 NC StateUniv 6.4 2.1 0.71 M M M N H H
_________________________________________________________________________________
CV (%) 8.4 6.8 14.41
Mean 7.3 2.0 0.63
LSD (5%) 1.0 0.2 0.15
_________________________________________________________________________________
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 24. 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 PX147-10830 Seminis 9 13 12 8 8
2 PX147-10895 Seminis 8 15 10 8 7
3 HMX-7425 Harris Moran 8 11 14 7 8
4 Dasher II Seminis 8 23 18 7 7
5 Cherokee 87 Check 6 70 36 7 7
6 EGSB-160 EmeraldSeeds 6 54 30 7 7
7 G83xNC-62 NC StateUniv 6 40 30 6 6
8 G57xNC-62 NC StateUniv 6 68 47 6 6
9 G83xNC-58 NC StateUniv 5 40 28 7 5
10 G57xNC-58 NC StateUniv 5 78 45 7 7
11 EGSB-152 EmeraldSeeds 5 7 6 7 8
12 G57xNC-59 NC StateUniv 5 69 40 6 7
13 NC-Stratford NC StateUniv 5 71 39 6 5
14 G83xNC-63 NC StateUniv 3 58 30 7 6
15 NC-Sunshine NC StateUniv 3 94 51 6 6
16 G57xNC-63 NC StateUniv 3 38 33 5 7
17 Ashley Check 3 5 4 8 4
18 Poinsett 76 CornellUniv 3 6 6 7 6
19 G83xNC-59 NC StateUniv 3 16 20 6 6
20 EGSB-118 EmeraldSeeds 2 0 0 6 6
_________________________________________________________________________________
CV (%) 27 66 53 21 24
Mean 5 39 25 7 7
LSD (5%) 2 43 22 2 3
_________________________________________________________________________________
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) = 0.08ns
Table 25. Stage 3 spring slicer trial - disease ratings (cultigens ranked
by average disease resistance).z
_________________________________________________________________________________
Cultivar Seed Downy
Rank or line source mildew
_________________________________________________________________________________
1 PX147-10830 Seminis 1.0
2 PX147-10895 Seminis 1.0
3 HMX-7425 Harris Moran 1.0
4 Dasher II Seminis 1.0
5 Cherokee 87 Check 1.0
6 EGSB-160 EmeraldSeeds 1.0
7 G83xNC-62 NC StateUniv 1.0
8 G57xNC-62 NC StateUniv 1.0
9 G83xNC-58 NC StateUniv 1.0
10 G57xNC-58 NC StateUniv 1.0
11 EGSB-152 EmeraldSeeds 1.0
12 G57xNC-59 NC StateUniv 1.0
13 NC-Stratford NC StateUniv 1.0
14 G83xNC-63 NC StateUniv 1.0
15 NC-Sunshine NC StateUniv 1.0
16 G57xNC-63 NC StateUniv 1.0
17 Poinsett 76 CornellUniv 1.0
18 G83xNC-59 NC StateUniv 1.0
19 EGSB-118 EmeraldSeeds 1.0
20 Ashley Check 2.0
_________________________________________________________________________________
CV (%) 36.9
Mean 1.1
LSD (5%) 0.6
_________________________________________________________________________________
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) = -0.15ns
Table 26. 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-Sunshine NC StateUniv 6.4 5.8 7.3 6.7
2 EGSB-160 EmeraldSeeds 5.9 5.3 6.1 6.8
3 Cherokee 87 Check 5.7 5.1 10.2 9.2
4 G57xNC-58 NC StateUniv 5.7 5.1 10.4 9.2
5 NC-Stratford NC StateUniv 5.6 5.0 8.3 8.1
6 G57xNC-59 NC StateUniv 5.5 4.9 11.2 9.8
7 G83xNC-63 NC StateUniv 5.5 4.9 8.7 8.7
8 G57xNC-62 NC StateUniv 5.4 5.0 11.0 10.1
9 G83xNC-58 NC StateUniv 5.1 4.7 8.6 9.0
10 G83xNC-62 NC StateUniv 4.8 4.4 10.5 10.4
11 Dasher II Seminis 4.7 4.2 9.9 10.0
12 EGSB-152 EmeraldSeeds 4.6 4.1 9.1 10.7
13 G57xNC-63 NC StateUniv 4.5 4.2 12.0 11.1
14 PX147-10895 Seminis 4.5 4.0 9.8 11.1
15 PX147-10830 Seminis 4.3 3.9 10.2 10.9
16 G83xNC-59 NC StateUniv 4.2 3.9 12.3 12.5
17 HMX-7425 Harris Moran 4.0 3.7 11.6 11.9
18 Poinsett 76 CornellUniv 3.8 3.5 13.7 13.8
19 Ashley Check 3.6 3.2 15.4 15.2
20 EGSB-118 EmeraldSeeds 3.4 3.0 13.9 14.7
_________________________________________________________________________________
CV (%) 14.9 14.3 17.4 17.7
Mean 4.9 4.4 10.5 10.5
LSD (5%) 1.2 1.0 3.0 3.1
_________________________________________________________________________________
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) = 0.93**
Correlation (Marketable yield with ARI1) = -0.50**