Pests
Thysanoptera
Thrips are small, cryptic, sap-sucking pests that damage plant tissues and transmit viral diseases. Resistance to them is complex and is more often described qualitatively rather than through strict immunity codes.
Mentioned in descriptions 1 399 varieties reference book.
Thrips are small insects with piercing-sucking mouthparts that inhabit leaf axils, buds, and flowers. Their presence is manifested by the appearance of silvery discolored spots, streaks, and dots, as well as deformation, leaf curling, and premature shedding of plant organs. Small black dots, which are the pest's excrement, are often visible on the affected parts.
Varietal resistance to thrips is determined by genetically defined physiological and biochemical properties, such as the content of specific metabolites. Unlike many pathogens, there are no generally accepted international resistance codes for thrips; therefore, this trait is usually indicated in descriptions as relative resistance or based on an assessment score of susceptibility.
The degree of plant damage directly depends on external conditions, the age of the crop, and the pressure intensity of the pest population, which is capable of forming new biotypes. Genetic resistance to thrips is polygenic; therefore, under field conditions, even resistant genotypes may demonstrate varying reactions depending on the agro-ecosystem and the overall level of preventive measures.
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.
Chrysanthemum x morifolium Ramat. · Florist's daisy
YODER| Yoder Plant Trading GmbH
Capsicum annuum L. · Bell pepper
HM Clause SAS (FR)
Chrysanthemum indicum L. · Indian chrysanthemum
FIDES BEHEER BV (NL)
Brassica oleracea L. (White Cabbage Group) · White cabbage
Ger Beemsterboer
Allium cepa L. · Onion
Ger Bimsdeboer
Brassica oleracea L. (White Cabbage Group) · White cabbage
Gerard Balder
Brassica oleracea L. (White Cabbage Group) · White cabbage
Syngenta Crop Protection AG
Triticum aestivum L. · Bread wheat
Kovalchuk Serhii Oleksandrovych, Marchenko Mariia Mykolaivna, Koval` Ol`ha Hryhorivna, Starychenko Vasyl Mykolaiovych, Buriak Vasyl` IUkhymovych,
Brassica oleracea L. (White Cabbage Group) · White cabbage
Naumov Ruslan Olehovych, Krasnok Viacheslav Anatoliiovych,
Triticum aestivum L. · Bread wheat
Davydiuk Hanna Volodymyrivna, Kovalchuk Serhii Oleksandrovych, Klymenko Iryna Ivanivna, Zaika IEvhenii Viktorovych, Hirko Oleksandr Volodymyrovych, Tkachova Natalia Andriivna, Starychenko Vasyl Mykolaiovych, Holyk Liubov Mykolaivna,
Brassica oleracea L. (Red Cabbage Group) · Red cabbage
Robert Prieur
Brassica oleracea L. (Red Cabbage Group) · Red cabbage
Nort Khadlier
Brassica oleracea L. (Red Cabbage Group) · Red cabbage
P.J. Struik
Brassica oleracea L. (White Cabbage Group) · White cabbage
Robert Prieur
Chrysanthemum indicum L. · Indian chrysanthemum
FIDES BEHEER BV (NL)
Brassica oleracea L. (White Cabbage Group) · White cabbage
Her Bimsdeboer
Brassica oleracea L. (White Cabbage Group) · White cabbage
Hari Besels
Brassica oleracea L. (White Cabbage Group) · White cabbage
Zoltan Gazsi
Brassica oleracea L. (White Cabbage Group) · White cabbage
p. Khuanh Ksiano Binh
Brassica oleracea L. (Savoy Cabbage Group) · Savoy cabbage
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
Brassica oleracea L. (White Cabbage Group) · White cabbage
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
Allium cepa L. · Onion
ISI SEMENTI SPA
Freesia Eckl. ex Klatt · Freesia
Van den Bos Freesia B.V.
Brassica oleracea L. (White Cabbage Group) · White cabbage
Gerard Balder