Cultivation
Triticum aestivum L.
The classification of common wheat into winter and spring forms is determined by the state of Vrn loci, which regulate the plant's requirement for vernalization to transition to generative development.
In the reference 370 varieties crop Bread wheat, where this is mentioned in the description.
The genetic difference is due to the state of the Vrn loci: winter forms carry recessive alleles in these loci and require exposure to low positive temperatures to flower, whereas spring forms possess dominant alleles that allow them to develop without vernalization.
Biologically, the forms differ in the length of the growing season, which ranges from 200–300 days for winter wheat and 70–120 days for spring wheat. When sown in autumn, winter wheat develops a robust root system and tillers before the onset of winter, capable of withstanding frosts down to -25°C in the presence of snow cover.
Spring forms have adapted to rapidly utilize resources within a short vegetation cycle, though they are more sensitive to drought and temperature stress. In breeding, there are also 'facultative' forms that combine traits of both types, providing flexibility in sowing dates.
General information about the subject — on the page Winter and spring forms.
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.
Triticum aestivum L. · Bread wheat
Strube Research GmbH & Co. KG, D- 38387 Sollingen
Triticum aestivum L. · Bread wheat
BEDO YOLTAN LANG LASZLOSZUNICS LASZLOVEISZ OTTOVIDA GYULAKARSAI ILDIKOSZUCS PETERSZUNICS LASZLONEJUHASZ ANGELA
Triticum aestivum L. · Bread wheat
NICKERSON INTERNATIONAL RESEARCH SNC
Triticum aestivum L. · Bread wheat
Nordic Seed A/S
Triticum aestivum L. · Bread wheat
PLANT BREEDING INTERNATIONAL
Triticum aestivum L. · Bread wheat
FORSCHUNGSANSTALT FÜR AGRARÖKOLOGIE UND LANDBAU^^^Station Fédérale de Recherches Agronomiques de Changins (RAC)
Triticum aestivum L. · Bread wheat
LEMAIRE DEFFONTAINES S.A.S.
Triticum aestivum L. · Bread wheat
SAATZUCHT DONAU GESMBH&COKG
Triticum aestivum L. · Bread wheat
Caussade Semences, F
Triticum aestivum L. · Bread wheat
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Triticum aestivum L. · Bread wheat
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Triticum aestivum L. · Bread wheat
Magyarosi, Tomas/Löhde, Jörgen
Triticum aestivum L. · Bread wheat
SECOBRA RECHERCHES S.A.S
Triticum aestivum L. · Bread wheat
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Triticum aestivum L. · Bread wheat
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Triticum aestivum L. · Bread wheat
Svensson, Gunnar/Jönsson, Jan Ö.
Triticum aestivum L. · Bread wheat
K. Kostov, A. Karaivanov, I. Panayotov, I. Todorov, N. Tsenov, I. Stoeva, I. Iliev, K. Malinski, T. Petrova
Triticum aestivum L. · Bread wheat
APSOVSEMENTI S.P.A. / CO.NA.SE. CONSORZIO NAZIONALE SEMENTI S.R.L.
Triticum aestivum L. · Bread wheat
RAGT 2N S.A.S
Triticum aestivum L. · Bread wheat
Limagrain Europe S.A.S
Triticum aestivum L. · Bread wheat
Nina Pfeiffer, Erhard Ebmeyer
Triticum aestivum L. · Bread wheat
KWS Momont, F
Triticum aestivum L. · Bread wheat
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Triticum aestivum L. · Bread wheat
Elsoms Seeds