Tannat
ActiveAllium cepa L. var. cepa · Onion
Enza Zaden Beheer B.V.
Variety traits
Vigor is the genetic ability of a variety for intensive vegetative biomass accumulation or an indicator of seed viability reflecting germination energy and the ability to overcome soil resistance.
Mentioned in descriptions 53 548 varieties reference book.
The vigor of a variety is manifested in the overall development power of aerial organs, including tillering intensity, shoot length, and the rate of leaf area formation. As a seed characteristic, this indicator reflects the ability of seedlings to develop successfully under actual field conditions by pushing through the soil layer, which distinguishes it from standard laboratory germination.
During variety testing, development intensity is assessed visually or through biometric indicators, such as plant height and crown diameter, in comparison with reference samples. Objectivity of the assessment is achieved only under identical agrotechnical conditions, as the manifestation of this trait depends directly on the availability of nutrients, moisture, temperature, and light to the plants.
Hereditary predisposition to vigor determines the suitability of a variety for specific technologies. Vigorous varieties have an advantage in competition with weeds, while less vigorous forms are preferable for intensive technologies that allow for the use of high-density planting schemes and facilitate mechanized harvesting. At the same time, the general state of the plants and the incidence of phytopathogens can significantly suppress the natural growth potential of any variety.
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.
Allium cepa L. var. cepa · Onion
Enza Zaden Beheer B.V.
Solanum lycopersicum L. · Tomato
Royal Sluis France Sarl (FR)
Rosa L. · Rose
Hans-Juergen Evers
Vitis berlandieri Planch. x Vitis riparia Michx.
Brassica napus L. · Rapeseed
Norddeutsche Pflanzenzucht Hans-Georg Lembke KG
Rosa L. · Rose
Hans-Juergen Evers
Zea mays L. · Maize
Syngenta Crop Protection AG
Allium cepa L. · Onion
Ger Beemsterboer
Prunus domestica L. · European plum
John M. GARABEDIAN (US)
Rosa L. · Rose
Rosen Tantau KG
Raphanus sativus L. · Radish
HILD SAMEN GMBH
Rosa L. · Rose
Rosen-Tantau Mathias Tantau Nachfolger
Vitis vinifera L. · Common grape vine
GARGIULO ANGELO
Solanum lycopersicum L. · Tomato
Angelo Boni
Solanum lycopersicum L. · Tomato
Produkcja i Hodowla Roslin Ogrodniczych Krzeszowice sp. z o.o.
Zea mays L. · Maize
Syngenta Crop Protection AG
Prunus domestica L. · European plum
WEINBERGER JOHN H.
Bougainvillea Comm. ex Juss. · Bougainvillea
GARTNERIET LINDESKOV A/S
Phaseolus vulgaris L. · Common bean
Sativa coop (IT)
Zea mays L. · Maize
Stephane Melkior
Zea mays L. · Maize
RAGT 2N S.A.S
Malus Mill. · Apple
BLAZEK J.
Pelargonium zonale (L.) L'Hér. · Horseshoe pelargonium
GOLDSMITH SEEDS
Vitis vinifera L. · Common grape vine
MINCHO GUENCHEV KONDAREV