Rivalda
ActiveLactuca sativa L. · Lettuce
Rijk Zwaan, NL
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, NL
Rhododendron L. · Azalea
Preil Walter|Ammersbek, DE / Ebbinghaus Rainer|Ahrensburg, DE
Glycine max (L.) Merr. · Soybean
RAGT 2N S.A.S
Cucumis sativus L. · Cucumber
PNOS
Lolium perenne L. · Perennial ryegrass
RAGT 2N S.A.S
Hordeum vulgare L. · Barley
RAGT 2N S.A.S
Phaseolus vulgaris L. · Common bean
Syngenta Seeds
Lolium perenne L. · Perennial ryegrass
Oregro Seeds
Prunus salicina Lindl. · Japanese plum
Festuca arundinacea Schreb. · Tall fescue
Peak Plant Genetics, LLC & Rutgers, The State University of New Jersey
Phaseolus vulgaris L. · Common bean
Syngenta Seeds
Triticum aestivum L. · Bread wheat
LEMAIRE DEFFONTAINES S.A.S.
Solanum lycopersicum L. · Tomato
Jean-Franҫois Grillat
Festuca arundinacea Schreb. · Tall fescue
LEBANON TURF
Prunus salicina Lindl. · Japanese plum
Festuca arundinacea Schreb. · Tall fescue
RAGT 2N S.A.S
Cucumis sativus L. · Cucumber
Bayer Holland B.V.
Spinacia oleracea L. · Spinach
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
Prunus armeniaca L. · Apricot
PSB produccion vegetal S.L. (ES)
Capsicum annuum L. · Bell pepper
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
Triticum aestivum L. · Bread wheat
RAGT 2n
Brassica oleracea L. (Broccoli Group) · Broccoli
TAKII JAPAN and CO. 180 UMEKOJI
Cucumis sativus L. · Cucumber
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
Brassica oleracea L. (Broccoli Group) · Broccoli
Sakata Seed Corporation (SCC)