V349OL
ActiveBrassica napus var. napus · Rapeseed
Nelly Guguin
Variety traits
Lodging is the displacement of stems from a vertical position or their breakage caused by root or stem factors. It is a critical variety trait that directly affects yield losses and harvesting efficiency.
Mentioned in descriptions 50 198 varieties reference book.
Lodging is a deviation of plants from a vertical position, which is categorized into root lodging and stem lodging. In the first case, tilting occurs due to weak root anchorage in the soil, while in the second, the stem bends or breaks due to insufficient straw strength under the load of the ear mass or stand density.
Lodging resistance is evaluated during state variety trials visually on a five-point scale before harvest, where high scores correspond to high resistance, and low scores to a tendency for crop collapse. Additionally, methods for measuring stem flexibility and calculating bending strength are employed.
This variety trait depends on the interaction between the genotype and growing conditions. Genetic resistance is determined by the presence of semi-dwarf genes, straw diameter, the strength of anatomical tissues, and lignin content, whereas external factors include nitrogen nutrition, seeding rate, and weather conditions.
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.
Brassica napus var. napus · Rapeseed
Nelly Guguin
Zea mays L. subsp. mays (Maize Group) · Maize
Pioneer Hi-Bred International Inc (US)
Zea mays L. · Maize
RAGT 2N S.A.S
Hordeum vulgare L. · Barley
Syngenta Crop Protection AG
Zea mays L. · Maize
PETER KONCZOL
Helianthus annuus L. · Sunflower
RAGT 2N S.A.S
Helianthus annuus L. · Sunflower
LABOULET SEMENCES
Brassica napus var. napus · Rapeseed
RAGT 2n
Zea mays L. · Maize
Philippe Moreau
Hordeum vulgare L. · Barley
Poljoprivredni Institut Osijek, HR
Zea mays L. · Maize
Roland Debeuf
Zea mays L. subsp. mays (Maize Group) · Maize
KWS SAAT SE & CO.KGAA
Zea mays L. subsp. mays (Maize Group) · Maize
KWS Saat AG, DE
Zea mays L. · Maize
LIMAGRAIN EUROPE S.A.
Zea mays L. · Maize
MAS SEEDS
Zea mays L. · Maize
Ludwig Feldmeier
Zea mays L. · Maize
MAS SEEDS
Helianthus annuus L. · Sunflower
MAS SEEDS
Hordeum vulgare L. · Barley
FLORIMOND DESPREZ VEUVE ET FILS
Hordeum vulgare L. · Barley
Landwirtschaftliche Fachschule Edelhof Saatzucht
Zea mays L. · Maize
MAS SEEDS
Zea mays L. · Maize
PIONEER OVERSEAS CORPORATION
Brassica napus var. napus · Rapeseed
Reinhard Hemker
Zea mays L. subsp. mays (Maize Group) · Maize
Limagrain Genetics Grandes Cultures SA (FR)