NCSU Cucumber Breeding Report - 2009
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
2009
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:
1 G57xNC-58 NCState Univ
2 G57xNC-62 NCState Univ
3 G83xNC-62 NCState Univ
4 Dasher II Seminis
5 Intimidator Seminis
6 G57xNC-59 NCState Univ
7 NC-Stratford NCState Univ
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 G57xNC-58 NCState Univ 156 231 47 31 26
2 G57xNC-62 NCState Univ 116 199 44 24 25
3 Dasher II Seminis 101 157 46 26 26
4 G83xNC-62 NCState Univ 101 220 35 25 25
5 G57xNC-59 NCState Univ 100 146 49 27 24
6 NC-Stratford NCState Univ 95 159 42 28 19
7 Intimidator Seminis 93 159 46 23 26
8 EGSB-160 EmeraldSeeds 82 131 47 26 26
9 G57xNC-63 NCState Univ 75 131 41 30 25
10 G83xNC-58 NCState Univ 74 159 33 27 26
11 G83xNC-59 NCState Univ 70 121 39 32 26
12 Poinsett 76 Cornell Univ 70 157 31 30 26
13 EMSB-143 EmeraldSeeds 61 95 52 20 26
14 EGSB-152 EmeraldSeeds 58 93 40 34 26
15 Cherokee 87 Check 58 119 27 42 24
16 Montebello United Genet 56 91 34 44 25
17 NC-Sunshine NCState Univ 53 114 25 45 22
18 G83xNC-63 NCState Univ 53 101 32 39 26
19 Ashley Check 39 80 25 42 24
20 Marketmore76 Check 32 62 35 31 26
_________________________________________________________________________________
CV (%) 42 33 24 27 11
Mean 77 136 39 31 25
LSD (5%) 53 74 15 14 5
_________________________________________________________________________________
Correlation (Marketable yield with % culls) = -0.49**
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 G57xNC-58 NCState Univ 72 30 167 73 201 87 224 97 226 98
2 G57xNC-62 NCState Univ 83 41 134 68 160 82 191 96 197 99
3 G83xNC-62 NCState Univ 53 25 128 57 187 84 218 99 219 99
4 Intimidator Seminis 55 32 101 68 126 83 157 99 159 100
5 G57xNC-63 NCState Univ 44 32 88 68 112 86 124 95 127 97
6 G57xNC-59 NCState Univ 40 25 88 59 114 80 139 95 142 97
7 NC-Sunshine NCState Univ 20 19 88 73 106 91 111 96 113 97
8 NC-Stratford NCState Univ 33 20 74 45 109 67 137 85 144 90
9 Dasher II Seminis 26 14 68 45 100 66 139 90 153 97
10 G83xNC-58 NCState Univ 32 21 68 43 116 73 149 95 158 99
11 EGSB-160 EmeraldSeeds 9 6 64 44 103 74 123 93 125 95
12 Cherokee 87 Check 12 10 50 40 98 83 117 98 117 98
13 G83xNC-59 NCState Univ 14 12 48 38 78 63 106 87 112 91
14 G83xNC-63 NCState Univ 19 20 43 42 60 60 88 88 91 90
15 Montebello United Genet 6 5 37 34 65 75 83 92 88 97
16 Poinsett 76 Cornell Univ 2 1 31 20 88 57 127 82 143 92
17 EGSB-152 EmeraldSeeds 1 1 28 29 67 67 87 93 89 95
18 Ashley Check 1 2 14 19 47 55 66 78 73 95
19 EMSB-143 EmeraldSeeds 0 0 11 13 45 45 80 79 90 95
20 Marketmore76 Check 0 0 7 13 26 42 47 74 50 78
_________________________________________________________________________________
CV (%) 82 61 46 38 37 22 35 8 34 5
Mean 26 16 67 45 100 71 126 90 131 95
LSD (5%) 35 16 50 28 61 26 72 11 74 8
_________________________________________________________________________________
Correlation (Marketable yield with yield in harvests 1-2) = 0.81**
Correlation (Marketable yield with % of yield in harvests 1-2) = 0.44**
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 Poinsett 76 Cornell Univ 7.1 8 8 7 7
2 Montebello United Genet 7.1 6 7 8 7
3 EMSB-143 EmeraldSeeds 7.0 7 9 6 8
4 G83xNC-62 NCState Univ 6.9 7 8 7 7
5 Dasher II Seminis 6.8 7 8 6 7
6 NC-Stratford NCState Univ 6.7 8 8 6 7
7 G83xNC-58 NCState Univ 6.7 7 8 6 7
8 G83xNC-59 NCState Univ 6.7 7 8 6 7
9 G83xNC-63 NCState Univ 6.6 8 8 6 6
10 Marketmore76 Check 6.6 7 7 6 7
11 EGSB-160 EmeraldSeeds 6.6 6 8 6 7
12 EGSB-152 EmeraldSeeds 6.6 6 8 6 7
13 Ashley Check 6.3 7 6 7 5
14 G57xNC-62 NCState Univ 6.2 6 7 6 6
15 Intimidator Seminis 6.2 6 8 6 6
16 NC-Sunshine NCState Univ 6.1 6 8 7 6
17 Cherokee 87 Check 6.0 6 6 6 6
18 G57xNC-58 NCState Univ 5.8 6 7 6 5
19 G57xNC-63 NCState Univ 5.7 6 6 6 5
20 G57xNC-59 NCState Univ 5.6 5 6 6 5
_________________________________________________________________________________
CV (%) 6.8 10 7 13 13
Mean 6.5 7 7 6 6
LSD (5%) 0.7 1 1 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) = -0.16ns
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 Poinsett 76 Cornell Univ 7.4 2.2 0.71 H D D T K K
2 Montebello United Genet 7.5 2.0 0.68 K T T T K K
3 EMSB-143 EmeraldSeeds 8.0 1.9 0.70 K T T G K K
4 G83xNC-62 NCState Univ 7.9 2.0 0.71 K X X T K T
5 Dasher II Seminis 7.5 2.0 0.66 K D T T K K
6 NC-Stratford NCState Univ 7.8 2.1 0.81 G D X T K K
7 G83xNC-58 NCState Univ 7.9 2.1 0.77 T D D K K K
8 G83xNC-59 NCState Univ 7.9 2.0 0.81 T D D K K K
9 G83xNC-63 NCState Univ 7.9 2.0 0.75 K D D T T K
10 Marketmore76 Check 7.9 1.9 0.68 M H X T V K
11 EGSB-160 EmeraldSeeds 7.9 1.9 0.64 T T D K K K
12 EGSB-152 EmeraldSeeds 8.4 1.9 0.67 K T X T K K
13 Ashley Check 7.3 2.0 0.64 M D X T T T
14 G57xNC-62 NCState Univ 6.5 2.0 0.59 H H T T X K
15 Intimidator Seminis 7.2 1.8 0.52 H T X T K T
16 NC-Sunshine NCState Univ 7.4 2.0 0.66 H D T D K K
17 Cherokee 87 Check 7.5 2.1 0.72 H H X M D K
18 G57xNC-58 NCState Univ 6.6 2.0 0.61 H X D M K K
19 G57xNC-63 NCState Univ 6.6 2.1 0.62 H H D M D T
20 G57xNC-59 NCState Univ 6.2 2.1 0.59 H H X M D K
_________________________________________________________________________________
CV (%) 5.2 5.6 14.66
Mean 7.5 2.0 0.68
LSD (5%) 0.6 0.2 0.16
_________________________________________________________________________________
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 Montebello United Genet 8 37 34 7 8
2 Intimidator Seminis 8 101 68 6 7
3 Dasher II Seminis 7 68 45 6 8
4 EGSB-160 EmeraldSeeds 7 64 44 6 7
5 G57xNC-58 NCState Univ 6 167 73 8 6
6 G83xNC-62 NCState Univ 6 128 57 7 5
7 G83xNC-58 NCState Univ 6 68 43 7 7
8 NC-Stratford NCState Univ 6 74 45 5 7
9 EGSB-152 EmeraldSeeds 5 28 29 7 7
10 G57xNC-63 NCState Univ 5 88 68 6 8
11 G57xNC-62 NCState Univ 5 134 68 8 7
12 Cherokee 87 Check 5 50 40 7 8
13 NC-Sunshine NCState Univ 5 88 73 5 7
14 G57xNC-59 NCState Univ 4 88 59 6 9
15 G83xNC-63 NCState Univ 4 43 42 6 4
16 Marketmore76 Check 3 7 13 6 8
17 G83xNC-59 NCState Univ 3 48 38 6 8
18 Ashley Check 3 14 19 6 6
19 EMSB-143 EmeraldSeeds 3 11 13 7 8
20 Poinsett 76 Cornell Univ 3 31 20 8 9
_________________________________________________________________________________
CV (%) 29 46 38 16 12
Mean 5 67 45 7 7
LSD (5%) 2 50 28 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) = 0.23ns
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 Cherokee 87 Check 2.7
2 G57xNC-59 NCState Univ 3.3
3 EGSB-160 EmeraldSeeds 3.7
4 Dasher II Seminis 4.0
5 EGSB-152 EmeraldSeeds 4.0
6 EMSB-143 EmeraldSeeds 4.0
7 Poinsett 76 Cornell Univ 4.0
8 G83xNC-63 NCState Univ 4.3
9 Montebello United Genet 4.7
10 G83xNC-59 NCState Univ 4.7
11 Ashley Check 4.7
12 G57xNC-63 NCState Univ 5.0
13 G83xNC-62 NCState Univ 5.3
14 G83xNC-58 NCState Univ 5.3
15 G57xNC-62 NCState Univ 5.3
16 Marketmore76 Check 5.3
17 NC-Stratford NCState Univ 5.7
18 Intimidator Seminis 6.0
19 G57xNC-58 NCState Univ 7.0
20 NC-Sunshine NCState Univ 7.3
_________________________________________________________________________________
CV (%) 20.8
Mean 4.8
LSD (5%) 1.7
_________________________________________________________________________________
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) = 0.29ns
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 G57xNC-58 NCState Univ 7.4 6.5 11.0 10.1
2 G57xNC-62 NCState Univ 6.7 6.0 9.1 8.5
3 G83xNC-62 NCState Univ 6.7 5.9 7.5 7.5
4 Dasher II Seminis 5.7 5.3 8.1 8.2
5 Intimidator Seminis 5.7 5.4 10.9 10.4
6 G57xNC-59 NCState Univ 5.7 5.3 10.9 9.6
7 NC-Stratford NCState Univ 5.6 5.1 9.6 9.9
8 EGSB-160 EmeraldSeeds 5.4 5.0 9.3 9.3
9 G83xNC-58 NCState Univ 5.2 4.9 10.1 10.4
10 G57xNC-63 NCState Univ 5.2 5.0 12.3 11.1
11 Poinsett 76 Cornell Univ 4.9 4.5 8.6 9.2
12 G83xNC-59 NCState Univ 4.9 4.6 10.4 10.9
13 Cherokee 87 Check 4.8 4.5 10.9 10.3
14 NC-Sunshine NCState Univ 4.7 4.7 12.9 12.5
15 G83xNC-63 NCState Univ 4.7 4.5 10.7 11.0
16 Montebello United Genet 4.5 4.3 9.6 10.5
17 EGSB-152 EmeraldSeeds 4.4 4.2 11.7 11.8
18 EMSB-143 EmeraldSeeds 4.3 4.0 10.6 11.4
19 Ashley Check 3.7 3.5 12.5 13.1
20 Marketmore76 Check 3.4 3.2 13.4 14.4
_________________________________________________________________________________
CV (%) 15.6 13.6 17.3 16.8
Mean 5.2 4.8 10.5 10.5
LSD (5%) 1.3 1.1 3.0 2.9
_________________________________________________________________________________
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) = -0.54**