Septoria Resistant Varieties

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Rockoe10
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Septoria Resistant Varieties

#1

Post: # 32873Unread post Rockoe10
Fri Oct 23, 2020 4:37 pm

Was doing some searching for heavily resistant varieties. I understand that with selection for production and resistance, taste can go out the window.

Has anyone grown the 'Iron Lady' variety, and if so how did it fair and was the taste too much to bare?
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Rob, ZONE 6A with 170 days between frost dates, Western Pennsylvania

Mark_Thompson
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Re: Septoria Resistant Varieties

#2

Post: # 32885Unread post Mark_Thompson
Sat Oct 24, 2020 1:01 am

viewtopic.php?t=1778

Maybe you’ll get a few more answers, I’m going to try a few next summer and I’ll definitely be posting results.
Wet and windy side of a Hawaiian island, just living the dream

Fusion_power
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Re: Septoria Resistant Varieties

#3

Post: # 33346Unread post Fusion_power
Sat Oct 31, 2020 9:47 pm

Iron Lady was susceptible to septoria in my northwest Alabama garden. It was not as good as Eva Purple Ball which is an OP variety I've grown for years.

One thing you need to know about septoria tolerance is that it is almost always based on acyl sugar accumulation in the plant. Without going into details, this means the most vigorous tomato plant will almost always show the most septoria tolerance. If you properly fertilize a tomato plant, it will show a lot more tolerance to septoria. This particularly means to pay attention to soil fertility just as the first fruits reach the diameter of a quarter. That is the point where fruit load starts to soak up massive amounts of photosynthate. If you can fertilize the plant with some compost at that point, it has much more potential to produce fruit because the leaves are not depleted of the chemicals that keep them healthy.

I've been working on septoria tolerance for about 10 years now. I found a single plant of LA0417 from TGRC that was relatively tolerant. It is a red cherry tomato approximately 3/4 inch diameter with exceptionally good flavor. The vines are vigorous and productive. The key with septoria tolerance is that it is not immunity except possibly with some wild tomato species. You can order my selection of LA0417 from Sandhill Preservation starting in January. It will be listed under the name "Lorelei".

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Re: Septoria Resistant Varieties

#4

Post: # 33353Unread post Mark_Thompson
Sun Nov 01, 2020 1:56 am

[mention]Fusion_power[/mention]

Thanks for the info.
I think I’ll give Lorelei a go this summer.
Wet and windy side of a Hawaiian island, just living the dream

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Rockoe10
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Re: Septoria Resistant Varieties

#5

Post: # 33400Unread post Rockoe10
Mon Nov 02, 2020 9:51 am

[mention]Fusion_power[/mention]
I will sure to order some.

My oldest is named Loralie, so I'm sure she will get a kick outta that too 😁
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Re: Septoria Resistant Varieties

#6

Post: # 47165Unread post Mark_Thompson
Thu May 20, 2021 4:56 pm

[mention]Rockoe10[/mention]

I'm growing Brandywise, Summer Sweetheart, and Mountaineer Delight right now. I'm not sure if they're all Hybrids, but I think so.

I couldn't find Lorelei when seed buying time came around, so missing out on that one.
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MissS
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Re: Septoria Resistant Varieties

#7

Post: # 47170Unread post MissS
Thu May 20, 2021 5:43 pm

[mention]Mark_Thompson[/mention] Loralie is a plant developed by Fusion_Power and is offered by him and him only. He sells plants, not seeds and you can find them here https://www.selectedplants.com/.
~ Patti ~

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Re: Septoria Resistant Varieties

#8

Post: # 47172Unread post Mark_Thompson
Thu May 20, 2021 5:51 pm

[mention]MissS[/mention]

Oh interesting! Thanks for that info. When he mentioned it being available at Sandhill Preservation I thought it would be seeds. Guess that’s why there’s that famous phrase about assuming.
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Rockoe10
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Re: Septoria Resistant Varieties

#9

Post: # 47176Unread post Rockoe10
Thu May 20, 2021 7:43 pm

That makes more sense. I had trouble as well. Thank you Miss S
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Re: Septoria Resistant Varieties

#10

Post: # 47196Unread post jmsieglaff
Fri May 21, 2021 8:45 am

I'm growing Lorelei this year. It was the largest and had the most root volume at planting of all my indeterminate tomatoes. The plant is very vigorous, looks to want to branch early and often, first flower cluster is there and probably will open in 5-7 days. Planted out May 13.

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Re: Septoria Resistant Varieties

#11

Post: # 47357Unread post jmsieglaff
Mon May 24, 2021 10:06 am

Well heat makes things progress quickly, first flowers opened 49 days after sowing, 10 after plant out, May 23.

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Re: Septoria Resistant Varieties

#12

Post: # 47496Unread post Doffer
Wed May 26, 2021 1:30 pm

Mark_Thompson wrote: Thu May 20, 2021 4:56 pm @Rockoe10

I'm growing Brandywise, Summer Sweetheart, and Mountaineer Delight right now. I'm not sure if they're all Hybrids, but I think so.

I couldn't find Lorelei when seed buying time came around, so missing out on that one.
Mountaineer Delight is a OP version with ph2 gene homozygous
Brandywise is a F1 with ph2 and ph3 genes to reduce blight.

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Re: Septoria Resistant Varieties

#13

Post: # 47507Unread post MrBig46
Wed May 26, 2021 3:50 pm

I wonder where you found out that Mountaineer has only one ph2 gene. So why the hype that resistance has increased after twenty years, when WV63 already had this gene?
Vladimír

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Re: Septoria Resistant Varieties

#14

Post: # 47554Unread post MrBig46
Thu May 27, 2021 9:00 am

It's cold and wet here. So far, the tested tomatoes are bravely holding on and, just like me, are looking forward to the predicted heat.
Vladimír
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Doffer
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Re: Septoria Resistant Varieties

#15

Post: # 47591Unread post Doffer
Thu May 27, 2021 2:22 pm

MrBig46 wrote: Wed May 26, 2021 3:50 pm I wonder where you found out that Mountaineer has only one ph2 gene. So why the hype that resistance has increased after twenty years, when WV63 already had this gene?
Vladimír
Mountaineer Delight and Mountaineer Pride are OP versions from the cross Iron Lady x WV63.
Both WV63 and Iron Lady are homozygous for ph2. Hence Mountaineer is homozygoot for ph2.

In Netherlands only homozygous ph2 is not enough to get some resistance to blight. ph3 homozygous or a combination of ph2 + ph3 heterozygous works pretty well.

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Re: Septoria Resistant Varieties

#16

Post: # 47594Unread post pepperhead212
Thu May 27, 2021 3:18 pm

This is interesting to find out about Mountaineer - I grew Mountaineer Pride for the first time last season, and it was one of the few with none of the septoria, and other fungal diseases, that were terrible last season, during a period when I was getting record amounts of rainfall (later, it switched to drought!). I grew it again, for this reason - not the greatest flavor, but it was resistant!
Woodbury, NJ zone 7a/7b

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Re: Septoria Resistant Varieties

#17

Post: # 47597Unread post MrBig46
Thu May 27, 2021 4:18 pm

Doffer wrote: Thu May 27, 2021 2:22 pm
MrBig46 wrote: Wed May 26, 2021 3:50 pm I wonder where you found out that Mountaineer has only one ph2 gene. So why the hype that resistance has increased after twenty years, when WV63 already had this gene?
Vladimír
Mountaineer Delight and Mountaineer Pride are OP versions from the cross Iron Lady x WV63.
Both WV63 and Iron Lady are homozygous for ph2. Hence Mountaineer is homozygoot for ph2.

In Netherlands only homozygous ph2 is not enough to get some resistance to blight. ph3 homozygous or a combination of ph2 + ph3 heterozygous works pretty well.
I understand. But I wonder where you found out it was really a cross WV63 x Iron Lady. Do you have WV universities directly? Recently, breeders have not published what cross they used for new tomatoes.
Vladimír

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Re: Septoria Resistant Varieties

#18

Post: # 47603Unread post jmsieglaff
Thu May 27, 2021 5:36 pm

C6802BB3-2261-4B45-8446-31BCC468A5F3.jpeg
Here is Lorelei 2 weeks after planting out. Very vigorous flowering and I have already pulled off 4 or 5 suckers. Will let 4-5 main stems grow.
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Re: Septoria Resistant Varieties

#19

Post: # 47678Unread post Doffer
Sat May 29, 2021 6:13 am

MrBig46 wrote: Thu May 27, 2021 4:18 pm
Doffer wrote: Thu May 27, 2021 2:22 pm
MrBig46 wrote: Wed May 26, 2021 3:50 pm I wonder where you found out that Mountaineer has only one ph2 gene. So why the hype that resistance has increased after twenty years, when WV63 already had this gene?
Vladimír
Mountaineer Delight and Mountaineer Pride are OP versions from the cross Iron Lady x WV63.
Both WV63 and Iron Lady are homozygous for ph2. Hence Mountaineer is homozygoot for ph2.

In Netherlands only homozygous ph2 is not enough to get some resistance to blight. ph3 homozygous or a combination of ph2 + ph3 heterozygous works pretty well.
I understand. But I wonder where you found out it was really a cross WV63 x Iron Lady. Do you have WV universities directly? Recently, breeders have not published what cross they used for new tomatoes.
Vladimír
https://extension.wvu.edu/lawn-gardenin ... resistance

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Re: Septoria Resistant Varieties

#20

Post: # 47693Unread post MrBig46
Sat May 29, 2021 11:16 am

What surprised me the most was that the article was about F1 hybrids. I haven't seen F1 on the seed cover or in the articles on Mountaineer Pride and Mountaineer Delight. That they didn't know it was to be stated?
Vladimír

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