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2024 Phytophthora Tolerance Test Results

Ontario Phytophthora Tolerance Test 2024: Woodslee, Ontario

This Report Contains Published Registered Varieties Only.


Planting Date: June 13, 2024

Stand Count Dates:

HUZDate
2200 & 2400August 29, 2024
2600September 16, 2024
2800September 16, 2024
3100 & 3400September 27, 2024

Plot Size: Single row, 50 seeds/row

Replications: 4, randomized blocks

Phytophthora root rot testing is carried out on clay soils infested with common races of Phytophthora at Woodslee. Phytophthora Root Rot (PRR) ratings were changed starting in 2019. Previous methodology used counting plants shortly after emergence (3-4 weeks after planting) and a subsequent counting 4 weeks later. The loss was estimated based on the difference between count 2 and count 1, taken as a percentage. The limitation in this counting method is that it does not take into account pre-emergence mortality due to PRR nor does it take into account late season mortality. Starting in 2019 we began expressing the PRR ratings based on final stand in a High phytophthora pressure environment. This final stand was only rated once for all maturity groups and this was again changed to rate the plants near the R6 growth stage which was done in 2020 in order to capture late season PRR damage.

2024 Phytophthora Tolerance Test MG00E & MG00 (2200/2400)

EntryName Final Stand/50 Plants% Stand% Loss
2ABACA346733
3Amino R2X387723
4Atiron377327
5Aurelina367129
6B0073EE306040
7Bellistar193862
8Bourke R2X357129
9Bronco R2X255050
12Donaldo R2X397822
13Elmo E3367129
14Enduro E3387525
15Fresco R2X265248
16Hana326436
17Hart R2X387624
18Jador275446
19JAGO346931
20Koa346733
21Kudo R2X244753
26Liska244951
27Luxor367327
28Maya428317
29Merino R2X326337
30Mozart306040
31Nala326436
37P002A42E295941
38P005A59E295842
39Panorama346733
43PR24X2500356931
44PR24XF2450275446
45Prostar244753
47Rico R2X255050
48S0009-J5X224555
49S001-D8X285644
50S003-R5X367228
51S007-A2XS265248
52S007-Z1X306040
53S02-M4XF367129
54S03-V5E3316337
55S04-J6X387723
56Salto R2357030
58SC24-2550XF367228
59SI 00924XFN316238
60SVX0124XT295842
61SVX23T00S47357030
64Triquet R2X316139
65Utica326337
66Young R2X305941
67Conradcheck – high field tolerance, rps306040
68Haro(1-7)1check – minimal field tolerance, rps61189
69OX20-8check – no field tolerance, Rps 1a0199
70Sloancheck – low field tolerance, rps102080
71Williamscheck – moderate field tolerance, rps326436
Mean of entries30
Coefficient of variation (%)28

2024 Phytophthora Tolerance Test MG0 (2600)

EntryName Final Stand% Stand% Loss
1AAC Kovik326436
2AAC Shinju316238
3Abiza275347
4Acora244951
5Acuna234753
6Alameda367327
7Algebra255050
8Altitude R2285644
10Angelica295743
11Apollina224555
12Atacama275545
13Atanga336634
14Atena377327
15Axis E3326436
16Aya377525
17B036CE326436
18B043EE254951
19B074HE275347
20Beliveau R2X346733
21Canstar265347
27CP0324X255149
30Dunham285545
31Dyno R2X285545
34Enyo E3387525
36Ezra306040
37Finch336535
38Genesis316238
39Harvey E3316238
40Havane356931
41Hola346832
42Kagawa316238
43Kyoto153070
47Marula244951
48Mason XF346733
49Matilda234555
50Miko R2244852
51Mya346733
52NA0800326535
53Nano R2X346832
54Navan357129
60OAC Champion234753
61OAC Evolution275545
62OAC Kamran255149
63OAC Strive377426
64OAC Wallace265149
65Odessa306040
66Orr R2X275446
80P04A98E316238
81P06A38E346832
83P08A44E285545
84Pico R2X346931
86PR24XF2750295743
87PS 0423EN305941
88PS 0521 XRN295842
89PS 0779 XRN326436
90PS 0944 XRN316238
91Ramage XF316337
92Ridley XF377327
93S01-D5306040
94S04-K9336634
95S06-A3XF336535
96S07-K5X326436
97S07-M8244852
98S09-B5XF357030
99S09-H7E3306139
100S10-R2285644
101S11-A4E3336634
102S11-U2XF387525
103S12-M5X356931
104Savage R2X367228
105SC24-2650XF336634
106SC24-2675XF377426
107SC24-2700E3214258
108Seabrook R2X367327
116SFL 06-44 IP367129
117SI 0323E3N316238
118SI 0620XTN265347
119SI 0720E3N367228
120SI 0921XTN306040
127Verdo367228
128Wilma357129
129Conradcheck – high field tolerance, rps305941
130Haro(1-7)1check – minimal field tolerance, rps61288
131OX20-8check – no field tolerance, Rps 1a00100
132Sloancheck – low field tolerance, rps132674
133Williamscheck – moderate field tolerance, rps244951
Mean of entries29
Coefficient of variation (%)23

2024 Phytophthora Tolerance Test MG1 (2800)

EntryName Final Stand% Stand% Loss
2Alinova336733
3B103EE336634
4B119KE255050
5B158DE357030
6B163EE91882
7B173EE306040
8B182ME367327
9Baltazar357030
10Compass E3275347
12EXP 1224 EN254951
14Forto336634
16HDC Blake336634
17Inwood346931
18Keith XF377327
19Kraft E3367327
20Mercado XF316337
21Milito377426
22NA1800295743
24OAC 18-63C-SCN193862
26OAC Aberdeen367228
27OAC Malory367228
28OAC Union397822
30P11A10295941
32P14A12E152971
34P17A87E377426
35P18A73E346832
36P19A37E377327
38PR24E2875204159
39PS 1022 EN357030
40PS 1344 XFN387723
41PS 1721 EN377426
42Rask E3356931
43Rowan203961
44S10-W8XF326535
45S12-J7356931
46S13-Y4XF285545
47S14-C7XF387624
48S14-H3224456
49S15-G9E3S285545
50S16-B8306139
51S16-K2X275446
52S20-W9367228
61SI 1222E3N316139
62SI 1422XTN336535
63SI 1820XTN295842
64SI 1823E3N357030
65Skyline367228
66Summit E3346832
80Taku377426
81Zeta275446
82Conradcheck – high field tolerance, rps295842
83Haro(1-7)1check – minimal field tolerance, rps71486
84OX20-8check – no field tolerance, Rps 1a0199
85Sloancheck – low field tolerance, rps112278
86Williamscheck – moderate field tolerance, rps275446
Mean of entries30
Coefficient of variation (%)27

2024 Phytophthora Tolerance Test MG2E & MG2L (3100/3400)

EntryName Final Stand% Stand% Loss
2AAC 26-15357030
3AAC Big Ben367327
4AAC McRae255149
5AAC Wigle265347
6B213EE234654
7B243EE306040
8B253LE316139
9B283EE326337
13Equator E3183565
16Express R2X397723
17NA2000306139
18NA2700326535
19OAC Bruton336535
20OAC Marvel285545
21OAC Stirling275347
23P20A48E326436
24P21A53E306139
25P22A67E346931
26P24A07E346832
27P25A16E387525
28P28A65E275446
29P29A19E326337
30P30A75E336634
31P33A62E408020
32PS 1923XFN357030
33PS 2120 EN295842
34PS 2322 XFN397822
35PS 2521 XFN346931
36PS 2923EN367228
37S18-F1E3S326436
38S20-L8X285644
39S22-A2E3346733
40S25-K4XF346832
41S26-E3418218
42S29-N5E3265248
43S29-R5X306040
44S32-J5XF285743
54SC24-3125XF357030
56SG 2311377426
57Siena387525
69Tillson367228
70Conradcheck – high field tolerance, rps244753
71Haro(1-7)1check – minimal field tolerance, rps112377
72OX20-8check – no field tolerance, Rps 1a00100
73Sloancheck – low field tolerance, rps142872
74Williamscheck – moderate field tolerance, rps285545
Mean of entries30
Coefficient of variation (%)26