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.
Helianthus annuus L. · Sunflower
Syngenta Crop Protection AG
Gossypium hirsutum L. · Upland cotton
ROBERT MCGOWEN
Helianthus annuus L. · Sunflower
Rene Baratin
Pisum sativum L. · Pea
Vasylenko Antonina Oleksandrivna, Bezuhlyi Ihor Mykolaiovych, Lubko Maryna Vasylivna, Parii IAroslav Fedorovych, Rusavskyi Vladyslav Leonidovych, Iliuchenko Oleksandr Serhiiovych, Parii Myroslav Fedorovych, Parii IUliia Oleksandrivna, Parii Fedir Mykytovy
Hydrangea paniculata Siebold · Panicled hydrangea
WIM RUTTEN
Zea mays L. · Maize
PIONEER HI-BRED INTERNATIONAL
Oryza sativa L. · Rice
Sardo Piemontese Sementi Soc. Coop. Società Agricola
Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
Ryoji Irie
Zea mays L. · Maize
PIONEER OVERSEAS CORPORATION
Helianthus annuus L. · Sunflower
Monsanto Agricultura España S.L.U.
Zea mays L. · Maize
PIONEER HI-BRED INTERNATIONAL
Zea mays L. · Maize
Limagrain Europe, F
Helianthus annuus L. · Sunflower
Radie Velimir, Cvejie Sandra, Jocie Sinisa,
Helianthus annuus L. · Sunflower
Institut za ratarstvo i povrtarstvo, Novi Sad
Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
Information regarding the breeder received in the contribution to CPVO :HBA B.V.
Buddleja L. · Buddleia
North Carolina State University / North Carolina State University
Euphorbia pulcherrima Willd. ex Klotzsch · Poinsettia
RUTH KOBAYASHI
Coreopsis rosea Nutt. · Pink coreopsis
Sunny Border Nurseries
Zea mays L. · Maize
MONSANTO TECHNOLOGY
Coreopsis L. · Tickseed
TERRA NOVA NURSERIES INC
Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
Ryoji Irie
Helianthus annuus L. · Sunflower
Nidera S.A.
Triticum aestivum L. · Bread wheat
Syngenta Seeds
Zea mays L. · Maize
MAS SEEDS