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
Summer (Stage 4) 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 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:
1 G57xNC-58 NCState Univ
2 Intimidator Seminis
3 NC-Stratford NCState Univ
4 NC-Sunshine NCState Univ
5 G57xNC-59 NCState Univ
6 EMSB-143 EmeraldSeeds
7 EGSB-160 EmeraldSeeds
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-58 NCState Univ 72 126 38 33 26
2 G57xNC-59 NCState Univ 67 100 46 30 26
3 NC-Stratford NCState Univ 60 110 38 31 26
4 Intimidator Seminis 58 111 37 32 26
5 NC-Sunshine NCState Univ 40 61 38 41 17
6 Montebello United Genet 40 60 48 29 25
7 G57xNC-63 NCState Univ 39 79 32 31 26
8 Poinsett 76 Cornell Univ 37 68 36 30 26
9 Dasher II Seminis 35 64 34 38 26
10 EGSB-160 EmeraldSeeds 30 59 28 45 26
11 EMSB-143 EmeraldSeeds 30 43 46 35 26
12 G83xNC-58 NCState Univ 27 46 28 52 24
13 G83xNC-63 NCState Univ 26 40 34 50 23
14 G83xNC-62 NCState Univ 25 53 25 47 24
15 G83xNC-59 NCState Univ 25 36 31 55 24
16 G57xNC-62 NCState Univ 25 65 22 42 26
17 Cherokee 87 Check 23 43 27 50 25
18 EGSB-152 EmeraldSeeds 20 30 33 50 26
19 Ashley Check 17 41 23 41 23
20 Marketmore76 Check 10 11 28 69 26
_________________________________________________________________________________
CV (%) 51 36 36 28 11
Mean 35 62 34 41 25
LSD (5%) 30 37 20 20 4
_________________________________________________________________________________
Correlation (Marketable yield with % culls) = -0.74**
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-58 NCState Univ 19 15 49 39 99 78 112 88 122 97
2 Intimidator Seminis 7 5 28 25 69 60 86 76 102 90
3 NC-Stratford NCState Univ 4 3 26 24 83 76 98 89 107 97
4 NC-Sunshine NCState Univ 9 10 25 38 47 76 51 84 61 100
5 G57xNC-59 NCState Univ 1 1 15 14 38 37 69 66 95 95
6 G83xNC-62 NCState Univ 1 2 14 34 33 67 46 87 50 96
7 G57xNC-62 NCState Univ 2 2 14 22 27 42 54 82 63 97
8 G83xNC-63 NCState Univ 2 3 11 19 22 43 35 85 38 95
9 G57xNC-63 NCState Univ 0 0 8 11 39 44 57 70 72 90
10 Cherokee 87 Check 1 1 4 8 12 25 24 50 43 100
11 Dasher II Seminis 1 1 3 4 11 12 31 44 57 89
12 Montebello United Genet 1 1 3 4 16 25 27 45 52 87
13 G83xNC-58 NCState Univ 0 0 3 7 16 40 27 62 42 93
14 G83xNC-59 NCState Univ 0 0 2 6 15 32 28 71 32 83
15 Ashley Check 0 0 1 2 11 24 14 33 32 75
16 EGSB-160 EmeraldSeeds 0 0 1 1 17 26 24 37 49 73
17 Poinsett 76 Cornell Univ 0 0 0 0 8 13 28 43 58 87
18 EMSB-143 EmeraldSeeds 0 0 0 0 0 1 11 23 33 69
19 EGSB-152 EmeraldSeeds 0 0 0 0 1 2 4 10 20 64
20 Marketmore76 Check 0 0 0 0 0 0 1 37 6 63
_________________________________________________________________________________
CV (%) 195 191 94 96 69 57 47 37 39 17
Mean 2 2 10 13 28 36 41 59 57 87
LSD (5%) 7 7 16 20 32 34 32 36 37 25
_________________________________________________________________________________
Correlation (Marketable yield with yield in harvests 1-2) = 0.68**
Correlation (Marketable yield with % of yield in harvests 1-2) = 0.42**
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 Marketmore76 Check 7.3 8 8 7 7
2 NC-Sunshine NCState Univ 7.0 6 8 8 7
3 Intimidator Seminis 6.9 7 7 6 8
4 EGSB-160 EmeraldSeeds 6.9 7 8 7 7
5 EMSB-143 EmeraldSeeds 6.8 7 8 7 7
6 G83xNC-58 NCState Univ 6.3 6 8 6 6
7 Poinsett 76 Cornell Univ 6.3 6 8 6 7
8 G83xNC-62 NCState Univ 6.3 6 7 7 6
9 NC-Stratford NCState Univ 6.2 6 8 6 7
10 Montebello United Genet 6.2 6 8 6 6
11 G83xNC-63 NCState Univ 6.2 5 8 7 7
12 Dasher II Seminis 6.2 5 7 8 6
13 G83xNC-59 NCState Univ 6.0 6 7 6 6
14 EGSB-152 EmeraldSeeds 5.9 6 8 7 5
15 Cherokee 87 Check 5.7 6 7 5 6
16 G57xNC-58 NCState Univ 5.6 5 5 6 5
17 Ashley Check 5.3 6 6 5 5
18 G57xNC-63 NCState Univ 5.2 5 6 5 5
19 G57xNC-62 NCState Univ 5.2 5 5 6 5
20 G57xNC-59 NCState Univ 4.7 5 5 5 4
_________________________________________________________________________________
CV (%) 9.9 18 11 12 14
Mean 6.1 6 7 6 6
LSD (5%) 1.0 2 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) = -0.15ns
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 Marketmore76 Check 7.9 2.1 0.62 K K K T T T
2 NC-Sunshine NCState Univ 7.6 1.9 0.64 K K K K D H
3 Intimidator Seminis 8.6 1.9 0.74 K K K T T T
4 EGSB-160 EmeraldSeeds 8.2 1.9 0.55 K K K T T T
5 EMSB-143 EmeraldSeeds 5.0 1.8 0.63 K T K T C T
6 G83xNC-58 NCState Univ 6.9 2.0 0.55 H K K M G H
7 Poinsett 76 Cornell Univ 6.7 2.0 0.74 H H K N N H
8 G83xNC-62 NCState Univ 7.7 2.0 0.66 H H K T M T
9 NC-Stratford NCState Univ 7.3 2.0 0.69 K K H H D K
10 Montebello United Genet 7.9 1.8 0.57 G O H T D T
11 G83xNC-63 NCState Univ 7.6 1.9 0.64 K H K T N K
12 Dasher II Seminis 7.2 1.9 0.56 H D K T N H
13 G83xNC-59 NCState Univ 7.5 2.0 0.65 H K K K H H
14 EGSB-152 EmeraldSeeds 7.4 1.8 0.55 H T H T N T
15 Cherokee 87 Check 6.8 2.0 0.55 K H H M N M
16 G57xNC-58 NCState Univ 6.7 2.1 0.67 H H M K M H
17 Ashley Check 7.1 1.9 0.58 M H H T M M
18 G57xNC-63 NCState Univ 6.6 2.0 0.61 H H M M M H
19 G57xNC-62 NCState Univ 6.6 2.0 0.58 H H K D M M
20 G57xNC-59 NCState Univ 6.3 2.0 0.57 H H M M M H
_________________________________________________________________________________
CV (%) 7.1 7.3 16.73
Mean 7.2 2.0 0.62
LSD (5%) 0.8 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 Montebello United Genet 8 3 4 8 8
2 Intimidator Seminis 7 28 25 8 6
3 NC-Stratford NCState Univ 7 26 24 7 6
4 G83xNC-62 NCState Univ 7 14 34 7 7
5 Cherokee 87 Check 7 4 8 7 8
6 G57xNC-58 NCState Univ 6 49 39 8 7
7 Dasher II Seminis 6 3 4 7 8
8 G57xNC-63 NCState Univ 6 8 11 7 7
9 G57xNC-62 NCState Univ 6 14 22 6 7
10 G83xNC-58 NCState Univ 6 3 7 7 7
11 NC-Sunshine NCState Univ 6 25 38 6 7
12 EGSB-160 EmeraldSeeds 5 1 1 8 7
13 Poinsett 76 Cornell Univ 5 0 0 7 7
14 G83xNC-59 NCState Univ 5 2 6 7 6
15 G57xNC-59 NCState Univ 5 15 14 8 7
16 EMSB-143 EmeraldSeeds 5 0 0 8 7
17 G83xNC-63 NCState Univ 5 11 19 7 7
18 Ashley Check 5 1 2 7 7
19 EGSB-152 EmeraldSeeds 4 0 0 8 7
20 Marketmore76 Check 4 0 0 7 7
_________________________________________________________________________________
CV (%) 18 94 96 12 12
Mean 6 10 13 7 7
LSD (5%) 2 16 20 1 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) = 0.39**
Table 32. Stage 4 summer slicer trial - disease ratings (cultigens ranked
by average disease resistance).z
_________________________________________________________________________________
Cultivar Seed Downy
Rank or line source mildew
_________________________________________________________________________________
1 EGSB-152 EmeraldSeeds 3.7
2 EMSB-143 EmeraldSeeds 4.0
3 Dasher II Seminis 4.7
4 EGSB-160 EmeraldSeeds 4.7
5 G57xNC-59 NCState Univ 4.7
6 Poinsett 76 Cornell Univ 5.0
7 Ashley Check 5.0
8 Marketmore76 Check 5.0
9 Montebello United Genet 5.3
10 G83xNC-62 NCState Univ 5.3
11 G57xNC-63 NCState Univ 5.3
12 G83xNC-58 NCState Univ 5.3
13 G83xNC-59 NCState Univ 5.3
14 Intimidator Seminis 5.7
15 G57xNC-62 NCState Univ 6.0
16 NC-Stratford NCState Univ 6.3
17 Cherokee 87 Check 6.3
18 G57xNC-58 NCState Univ 6.3
19 NC-Sunshine NCState Univ 6.3
20 G83xNC-63 NCState Univ 6.3
_________________________________________________________________________________
CV (%) 13.5
Mean 5.3
LSD (5%) 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) = 0.17ns
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-58 NCState Univ 4.2 4.0 10.1 9.0
2 Intimidator Seminis 4.2 4.0 7.2 7.3
3 NC-Stratford NCState Univ 4.0 3.8 8.9 8.7
4 NC-Sunshine NCState Univ 3.8 3.8 8.3 8.9
5 G57xNC-59 NCState Univ 3.6 3.3 11.7 9.7
6 EMSB-143 EmeraldSeeds 3.6 3.2 8.8 9.5
7 EGSB-160 EmeraldSeeds 3.5 3.2 8.9 9.5
8 Montebello United Genet 3.4 3.1 10.1 10.3
9 Dasher II Seminis 3.4 3.1 9.5 9.6
10 Poinsett 76 Cornell Univ 3.4 3.1 10.6 10.8
11 G83xNC-62 NCState Univ 3.4 3.5 9.2 9.1
12 Marketmore76 Check 3.3 3.0 9.3 11.1
13 G83xNC-58 NCState Univ 3.3 3.0 10.4 10.7
14 EGSB-152 EmeraldSeeds 3.3 2.9 11.4 11.5
15 G57xNC-63 NCState Univ 3.2 3.0 12.4 11.0
16 G83xNC-63 NCState Univ 3.1 3.1 11.7 12.5
17 G83xNC-59 NCState Univ 3.1 2.8 11.4 11.8
18 G57xNC-62 NCState Univ 2.9 2.8 13.0 11.8
19 Cherokee 87 Check 2.9 2.7 13.6 13.8
20 Ashley Check 2.8 2.5 13.6 13.2
_________________________________________________________________________________
CV (%) 11.8 12.1 18.9 19.1
Mean 3.4 3.2 10.5 10.5
LSD (5%) 0.7 0.6 3.3 3.3
_________________________________________________________________________________
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) = 0.76**
Correlation (Marketable yield with ARI1) = -0.39**