Ralston
ActiveLactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel 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.
Lactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
Capsicum annuum L. · Bell pepper
Enza Zaden Beheer B.V.
Vitis vinifera L. · Common grape vine
Sahar, N., Spiegel, Roy P., Baron, I.
Lolium x hybridum Hausskn. · Hybrid ryegrass
Grasslands Innovation Ltd, Grasslands Innovation Ltd
Prunus armeniaca L. · Apricot
Marie-France Bois
Malus domestica (Suckow) Borkh. · Apple
TGL Field & Son (NZ)
Glycine max (L.) Merr. · Soybean
STINE SEED CO.
Cucumis sativus L. · Cucumber
Paul Degreef
Solanum lycopersicum L. · Tomato
UNITED GENETICS SEEDS CO
Solanum lycopersicum L. · Tomato
W. LEGUTKO PRZEDSIEBIORSTWO HODOWLANO NASIENNE SP.Z.O.O
Vitis L. · Grapevine
Institut National de Recherche pour l'Agriculture l'Alimentation et l'Environnement (INRAE)
Phaseolus vulgaris L. · Common bean
URECKEN'S ZADEN (NL)
Pisum sativum L. · Pea
Limagrain UK
Capsicum annuum L. · Bell pepper
Superior, Velika Plana
Cucurbita pepo L. · Field pumpkin
SAKATA SEED AMERICA INC US
Prunus armeniaca L. · Apricot
Newcot SAS (FR)
Lupinus angustifolius L. · Narrow-leaf lupin
Nordic Seed A/S
Malus domestica (Suckow) Borkh. · Apple
University of Indiana (US)/Institut National de la Recherche Agronomique (FR)
Brassica rapa L. subsp. pekinensis (Lour.) Hanelt · Napa cabbage
TAKII EUROPE B V
Glycine max (L.) Merr. · Soybean
PIONEER HI-BRED INT
Prunus armeniaca L. · Apricot
Zaiger, Chris F.|929 Grimes Ave., Modesto, CA 95358 / Zaiger, Gary N.|1907 Elm Ave., Modesto, CA 95358 / Gardner, Leith M.|1207 Grimes Ave., Modesto, CA 95358 / Zaiger, Grant G.|4005 California Ave., Modesto, CA 95358
Capsicum annuum L. · Bell pepper
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
Cucurbita pepo L. · Field pumpkin
Syngenta UK Ltd
Cucumis sativus L. · Cucumber
Rijk Zwaan Zaadteelt en Zaadhandel B.V.