Picardan
ActiveVitis vinifera L. · Common grape vine
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Variety traits
Waxy bloom is a layer of wax-like substances on the surface of plant organs that acts as a protective barrier against moisture evaporation, overheating, and pests. This trait is genetically determined and serves as an important criterion for a variety's resistance to abiotic and biotic stresses.
Mentioned in descriptions 5 256 varieties reference book.
Waxy bloom (epicuticular wax) is a layer of substances on the surface of leaves, stems, and fruits that acts as a transpiration barrier, reducing moisture loss during drought conditions and reflecting ultraviolet radiation for protection against overheating. Visually, it manifests as a characteristic glaucous sheen on the plant's surface.
The intensity of bloom formation is determined by the genetic characteristics of the variety, but is subject to environmental factors. Wax synthesis increases at lower temperatures (below 15 °C), higher levels of UV radiation, and moisture deficit, which allows the plant to adapt to changing growing conditions.
In the state variety testing system, this trait is assessed visually by experts on a scoring scale, where the degree of expression is determined by comparison with an accepted standard. The presence of a strong waxy bloom increases the crop's resistance to pest damage, but creates a hydrophobic surface that requires a specific approach to the selection of adjuvants when conducting treatments.
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.
Vitis vinifera L. · Common grape vine
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Vitis vinifera L. · Common grape vine
INCONNU (FR)
Allium cepa L. · Onion
Fesenko Ihor Valeriiovych, Pozniak Oleksandr Vasyl`ovych, Fesenko Liubov Petrivna,
Brassica oleracea L. (Red Cabbage Group) · Red cabbage
A. Gyoshev, D. Nikolova, G. Antonova
Vitis vinifera L. · Common grape vine
INCONNU (FR)
Brassica oleracea L. (White Cabbage Group) · White cabbage
Seminis Vegetables (NL)
Malus domestica (Suckow) Borkh. · Apple
Gospodarstwo Szkółkarskie Andrzej i Szymon Nowakowscy
Brassica oleracea L. (White Cabbage Group) · White cabbage
Her Bimsdeboer
Vitis vinifera L. · Common grape vine
INCONNU (FR)
Vitis vinifera L. · Common grape vine
Roshka Nataliia Anatoliivna, Oliinykov Mykolai Petrovych, Melkonian Misak Vaharshakovych, Klymenko Viktor Pavlovych, Volynkin Volodymyr Oleksandrovych,
Prunus domestica L. · European plum
Institute of Fruit Crops-Plovdiv
Cucurbita moschata Duchesne · Butternut squash
Lymar Anatolii Ostapovych, Didenko Tetiana Volodymyrivna, Didenko Volodymyr Pavlovych,
Prunus domestica L. · European plum
Laskavyi Viktor Volodymyrovych, Laskavyi Volodymyr Pylypovych,
Vitis vinifera L. · Common grape vine
Meleshko Larysa Fedorivna, Sambors`ka Hanna Kyrylivna, Abliazova Aia Pavlivna, Tulaieva Maiia Ivanivna, Dokuchaieva IEvheniia Mykolaivna, Aivazian Petros Karapetovych,
Vitis vinifera L. · Common grape vine
Bachynskyi Anatolii Leonidovych
Prunus domestica L. · European plum
Laskavyi Viktor Volodymyrovych, Laskavyi Volodymyr Pylypovych, Shevchenko Oleksandr Mykhailovych,
Triticum aestivum L. · Bread wheat
Zaika IEvhenii Viktorovych, Kovalchuk Serhii Oleksandrovych, Klymenko Iryna Ivanivna, Hirko Oleksandr Volodymyrovych, Kyryl`chuk Anzhela Mykolaivna, Tkachova Nataliia Andriivna, Tkachyk Bohdan Vasyl`ovych, Starychenko Vasyl Mykolaiovych, Holyk Liubov Myko
Brassica oleracea L. (White Cabbage Group) · White cabbage
Robert Priieur
Vitis vinifera L. · Common grape vine
INCONNU (FR)
Rubus L. · Blackberry
Vladimir Kuzmin
Vitis vinifera L. · Common grape vine
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Ribes uva-crispa L. · Gooseberry
Lushpihan Ol`ha Petrivna, Pavlov Oleh Oleksiiovych,
Brassica oleracea L. (Cauliflower Group) · Cauliflower
Ger Beemsterboer
Vitis L. · Grapevine
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