Next year I think I’ll try again, or grow the tomatoes in partially buried 5 gal bags of potting mix.Īrugula helps knock down the levels of RKN when used as a cover crop: they invade the roots but are unable to reproduce. Certain cultivars like ‘Mountain Magic’ and ‘Mighty Sweet’ confer protection against specific diseases including late blight and verticillium wilt. Other disease-resistant tomato varieties are ‘Juliet’ and ‘Red Grape’. I was going to try my hand at grafting heirlooms onto highly resistant root stock this past winter, but the seedlings matured at such different rates it didn’t work out. Cherry tomatoes such as ‘Sweet 100’ and ‘Sun Gold’ demonstrate disease resistance. Most food plants seem to be at least somewhat susceptible. We don’t have a lot of space for gardening, so it is hard to rotate crops to the extent of avoiding filling a section with plants that don’t host nematodes for several years running. I’ve been trying to deal with RKN when growing tomatoes for four years now. – Roman Warrior paste tomatoes: productive, flavor OK. – Big Beef: plants stayed healthy through July, flavor was OK. Fairly rich tomato flavor, though not up at the level of Cherokee Purple or others. – Chocolate Sprinkle cherry tomatoes didn’t have too many galls and the plants stayed healthy through July. What worked best this summer in a garden with a fair amount of RKN: Lemon Boy seeds are widely available, and plants are often found at nurseries. I bought my seeds for the above varieties from Johnny’s and Territorial: Mountain Fresh Plus, BHN-1021, Big Beef, Damsel. I can attest that they definitely thrive despite the root-knot nematodes in the soil of my garden, and I’ve seen no other diseases affecting the plants. The above five varieties are all excellent, workhorse tomatoes that seem to fulfill their claims to disease resistance. The Lemon Boy plant is large and fruitful, yet not quite as productive as the above red varieties mentioned in this post. I have loved adding a bit of diced Lemon Boy into my salsas this summer. The Lemon Boy fruit’s flesh is meaty and its flavor has less acid and a bit more of a tropical taste. I hadn’t planned on growing Lemon Boy this year, but neighbors kindly gave me a plant, and when I looked the variety up and found that it claimed root-knot nematode resistance, I put it in the infested area of my garden - and it has thrived. A., , In : Plant Pathology. 65, 2, p.Finally, we have Lemon Boy. SSR assessment of Phytophthora infestans populations on tomato and potato in British gardens demonstrates high diversity but no evidence for host specialisation Stroud, J.QTL mapping in salad tomatoes Brekke, T.Jim Myers and Jim Baggett at Oregon State University and released in. infestans population and investigate which factors lead to host specialisation. The late-blight-resistant tomato youve been looking for Developed by Drs. While this has been successful to some extent, no single tomato hybrid has yet been developed which is resistant to all diseases. infestans population is different from the potato based P. The production of disease-resistant tomato varieties is one of the main objectives of modern hybrid development programs. Create an experimental mapping population of hybrid tomato plants that segregate for different blight resistance genes for understanding inheritance of resistance and selecting better varieties.Evaluate a wide range of existing tomato genotypes for resistance to late blight, caused by Phytophthora infestans.Tomato genotypes with potential for use in blight-resistance breeding programmes are being screened in field and greenhouse trials to assess their blight resistance. Further laboratory-based detached-leaf assays will be conducted to allow further comparisons of different host/pathogen genotype combinations. This project seeks to ascertain whether more resistant types could be developed. Intellectual Property (IP) and Commercialisationįunding sources: KESS/European Social Fund, Burpee Europe, The Savari Research Trustīackground: Late-blight is a fungal disease that costs the potato and tomato industry tens of millions of pounds per year through the cost of fungicide application and crop losses.
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