Diseases
Solanum tuberosum L.
A fungal disease of potatoes caused by the pathogen Alternaria solani, characterized by the appearance of spots with concentric zoning on the leaves, as well as lesions on stems and tubers.
In the reference 86 varieties crop Potato, where this is mentioned in the description.
The primary causal agent of potato early blight is the imperfect fungus Alternaria solani Sorauer. The role of other Alternaria species isolated from infected plants is considered secondary. There is no clear international division into races, so isolates are classified by morphological traits or levels of aggressiveness.
Symptoms on the leaves appear during the budding stage as dark brown spots 10–35 mm in diameter with characteristic concentric zoning, which become covered with an olive-colored mold under high humidity conditions. Elongated dark spots form on the stems, while sunken areas with dry rot of the flesh appear on the tubers.
The genetics of resistance to Alternaria solani is not sufficiently understood, and breeding is conducted primarily based on quantitative traits. Unlike late blight, there are no generally accepted R-gene designations for resistance to this pathogen.
General information about the subject — on the page Alternaria blight.
Selection based on the description text, not on official evaluation: these data are absent from registers. For specific variety details, please refer to its profile.
Solanum tuberosum L. · Potato
APPAL/COOP.Nª.Sª. DE OCON
Solanum tuberosum L. · Potato
HZPC Holland BV (NL)
Solanum tuberosum L. · Potato
Saatbau Linz OÖ. Landes-Saatbaugen.reg.Gen.m.b.H.
Solanum tuberosum L. · Potato
RUP «NAUCHNO - PRAKTICHESKIJ CZENTR NACZIONALNOJ AKADEMII NAUK BELARUSI PO KARTOFELEVODSTVU I PLODOOVOSHHEVODSTVU»
Solanum tuberosum L. · Potato
Niederösterreichische Saatbaugenossenschaft reg.Gen.m.b.H.
Solanum tuberosum L. · Potato
Heinrich Böhm
Solanum tuberosum L. · Potato
NEIKER-INSTITUTO VASCO DE INVESTIGACIÓN Y DESARROLLO AGRARIO, S.A.
Solanum tuberosum L. · Potato
HERVE DUBREUIL_
Solanum tuberosum L. · Potato
Heinrich Böhm
Solanum tuberosum L. · Potato
Bavaria Saat GbR
Solanum tuberosum L. · Potato
Instytut Hodowli i Aklimatyzacji Roslin Panstwowy Instytut Badawczy
Solanum tuberosum L. · Potato
Bavaria Saat GbR
Solanum tuberosum L. · Potato
RUP «NAUCHNO - PRAKTICHESKIJ CZENTR NACZIONALNOJ AKADEMII NAUK BELARUSI PO KARTOFELEVODSTVU I PLODOOVOSHHEVODSTVU»
Solanum tuberosum L. · Potato
HERMEZIU RADU
Solanum tuberosum L. · Potato
WALLMUELLER| Walter Wallmueller
Solanum tuberosum L. · Potato
Šiaurės-Vakarų ŽŪMTI
Solanum tuberosum L. · Potato
NEIKER-INSTITUTO VASCO DE INVESTIGACIÓN Y DESARROLLO AGRARIO, S.A.
Solanum tuberosum L. · Potato
KARTZ VON KAMEKE
Solanum tuberosum L. · Potato
Vesa Velhartice a.s.
Solanum tuberosum L. · Potato
HZPC Holland B.V.
Solanum tuberosum L. · Potato
Zelia Aureliia Heorhiivna, Halahan Tetiana Oleksandrivna, Kozun` Ihor Ivanovych, Tymko Liudmyla Volodymyrivna, Pysarenko Nataliia Vasylivna, Lysak Olena Andriivna, Andriienko Tetiana Mykhailivna, Tymko Mykola Hryhorovych, Sydorchuk Vasyl Ivanovych,
Solanum tuberosum L. · Potato
Solanum tuberosum L. · Potato
Solanum tuberosum L. · Potato