Septoria Resistant Varieties

[Rockoe10]

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?

[Mark_Thompson]

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.

[Fusion_power]

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".

[Mark_Thompson]

[mention]Fusion_power[/mention]

Thanks for the info.
I think I’ll give Lorelei a go this summer.

[Rockoe10]

[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

[Mark_Thompson]

[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.

[MissS]

[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/.

[Mark_Thompson]

[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.

[Rockoe10]

That makes more sense. I had trouble as well. Thank you Miss S

[jmsieglaff]

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.

[jmsieglaff]

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

[Doffer]

@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.

[MrBig46]

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

[MrBig46]

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

[Doffer]

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.

[pepperhead212]

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!

[MrBig46]

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

[jmsieglaff]

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.

[Doffer]

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

[MrBig46]

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