Diseases
Phytophthora infestans
Late blight is a dangerous disease of solanaceous crops caused by an oomycete, which manifests as the appearance of spots on leaves, stems, and tubers. The development of the disease is triggered by high humidity and moderate temperatures, which can lead to significant crop losses.
Mentioned in descriptions 6 798 varieties reference book.
Affected plants develop dirty-brown spots, often accompanied by a whitish mold on the underside of the leaf, while elongated dark-brown spots appear on the stems. Tubers show hard, sunken brown spots, and the internal tissue exhibits a characteristic rust-brown discoloration upon cutting.
Epiphytotics develop under conditions of high air humidity around 90% and alternating warm days with cool nights. The presence of free moisture, such as dew or fog, is a critical factor for rapid spore germination, which allows the infection to spread across the field in 10–15 days.
In breeding, a distinction is made between specific vertical resistance, controlled by R-genes, and field horizontal resistance, which is considered more reliable due to its polygenic nature and ability to slow down pathogen development. Varieties are evaluated using a 9-point scale; however, the resistance level of the foliage does not always coincide with that of the tubers, requiring comprehensive analysis during variety testing.
Selection based on the description text, not official resistance ratings: such data is not available in registers. Mention indicates that the trait is discussed in the variety's sources; see the variety's profile for details on what is specifically stated.
Solanum tuberosum L. · Potato
Sharapa Liubov Panasivna, Dan`ko Heorhii Vasyl`ovych, Manoilo Halyna Vasylivna, Khomenko Larysa Dmytrivna, Petrenko Kateryna Oleksandrivna, Onyshcenko Oleh Fedorovych,
Glycine max (L.) Merr. · Soybean
Pat Grams
Medicago sativa L. · Alfalfa
Mark Smith
Solanum tuberosum L. · Potato
FIRLBECK KG| Saatzucht Firlbeck GmbH + Co. KG
Solanum tuberosum L. · Potato
Boreiko Oksana Olehivna, Sidakova Oksana Vladyslavivna, Kupriianova Tetiana Mykolaivna, Kyrylishyn Vasyl` Vasyl`ovych, Zakharchuk Nataliia Anatoliivna, Zelia Avreliia Heorhiivna, Furdyha Mykola Mykolaiovych, Bondarchuk Anatolii Andriiovych,
Solanum tuberosum L. · Potato
Mel`nyk Pavlo Oleksiiovych, Sihor`ova Dina Dmytrivna, Dihtiar`ov Viktor Mykolaiovych, Sumets` IUrii Ivanovych, Sakhoshko Mykola Mykolaiovych, Kozhushko Neli Semenivna,
Solanum tuberosum L. · Potato
Mel`nyk Pavlo Oleksiiovych, Razkevych Mykola Pylypovych, Sobran Vasyl Mykhailovych, Ostrenko Mykhailo Volodymyrovych, Taktaiev Borys Anatoliiovych, Osypchuk Alla Andriivna, Nazar Stefaniia Hryhorivna, Osypchuk Andrii Antonovych,
Solanum tuberosum L. · Potato
Instytut Hodowli i Aklimatyzacji Roslin Panstwowy Instytut Badawczy
Solanum tuberosum L. · Potato
SAKA| SaKa Pflanzenzucht GmbH & Co. KG
Solanum tuberosum L. · Potato
Borzykh Oleksandr Ivanovych, Sobran Vasyl` Mykhailovych, Oliinyk Tetiana Mykolaivna, Tomash Anatolii Ivanovych, Taktaiev Borys Anatoliiovych, Nazar Stefaniia Hryhorivna, Osypchuk Andrii Antonovych, Furdyha Mykola Mykolaiovych, Bondarchuk Anatolii Andriiov
Solanum tuberosum L. · Potato
Pryvatne aktsionerne tovarystvo naukovo-vyrobnyche ob’iednannia «Chernihivelitkartoplia»
Gerbera L. · Gerbera
BINDI MAURIZIO
Solanum tuberosum L. · Potato
Kravchenko Oleksii Arsentiiovych, Podhaiets`kyi Anatolii Adamovych, Voitseshyna Nataliia Ivanivna, Bondarchuk Anatolii Andriiovych, Taktaiev Borys Anatoliiovych, Osypchuk Alla Andriivna, Nazar Stefaniia Hryhorivna, Osypchuk Andrii Antonovych,
Solanum tuberosum L. · Potato
KRAFFT (DE)
Rubus idaeus L. · Red raspberry
Lulcho I. Hristov, Rayna N. Boycheva
Solanum tuberosum L. · Potato
Kozun` Ihor Ivanovych, Mel`nyk Pavlo Oleksiiovych, Tymko Liudmyla Volodymyrivna, Pysarenko Nataliia Vasylivna, Lysak Olena Andriivna, Antriienko Tetiana Mykhailivna, Tymko Mykola Hryhorovych, Sydorchuk Vasyl Ivanovych,
Solanum tuberosum L. · Potato
Germicopa SA (FR)
Prunus domestica L. · European plum
INSTITUT NATIONAL DE LA RECHERCHE AGRONOMIQUE, FR
Solanum lycopersicum L. · Tomato
Panchev IUrii Ivanovych
Solanum tuberosum L. · Potato
SAKA PFLANZENZUCHT GBR
Fragaria L. · Strawberry
Philippe Chartier
Rubus L. · Blackberry
SCHIMMELPFENG| Hermann Schimmelpfeng / LAUN| Dipl.Ing. N. Laun Lehrstuhl fuer Obstbau der TU Muenchen
Solanum lycopersicum L. · Tomato
Korniienko Serhii Ivanovych, Pylypenko Liubov Vasylivna, Kuraksa Nina Petrivna,
Solanum tuberosum L. · Potato
Kupreichuk Viktor Petrovych, Dan`ko Heorhii Vasyl`ovych, Kolontai Hryhorii Mykolaiovych, Khomenko Larysa Dmytrivna, Petrenko Kateryna Oleksandrivna, Onyshcenko Oleh Fedorovych,