Diseases
Medicago sativa L.
A fungal disease of alfalfa (Medicago sativa), primarily caused by the pathogen Colletotrichum trifolii, affecting stems and the crown.
In the reference 57 varieties crop Alfalfa, where this is mentioned in the description.
The primary causal agent of alfalfa anthracnose is the fungus Colletotrichum trifolii, although other species of the genus, including C. destructivum and C. truncatum, may also be involved in disease development. The pathogen is characterized by the presence of at least five genetic races, which must be taken into account when selecting resistant cultivars for specific regions.
Symptoms appear as sunken lesions on the stems, often leading to a characteristic shepherd's crook bending followed by stem breakage. Under high humidity, acervuli with dark setae develop on the affected areas. Infection penetrating the crown causes tissue necrosis in the form of blue-black rot, which reduces winter hardiness and leads to plant death.
Breeding for resistance to anthracnose in alfalfa is based on creating populations with complex resistance to known races of the pathogen. The use of individual resistance genes in widespread practice is limited due to the dynamic nature of the pathogen's variability.
General information about the subject — on the page Anthracnose.
Selection based on the description text, not on official evaluation: these data are absent from registers. For specific variety details, please refer to its profile.
Medicago sativa L. · Alfalfa
Florimond Desprez Veuve et Fils, FR
Medicago sativa L. · Alfalfa
S. A. FLORIMOND DESPREZ VEUVE ET FILS
Medicago sativa L. · Alfalfa
RW Williams, TM O'Brien and AJ Williams with GG Drummond, PGH Nichols, DB Waterhouse, Dept of Ag fob State NSW,& GRDC & AWR&PO
Medicago sativa L. · Alfalfa
CSIRO TROPICAL AGRICULTURE
Medicago sativa L. · Alfalfa
GOLDEN WEST SEED RESEARCH Co.
Medicago sativa L. · Alfalfa
Natura Srl
Medicago sativa L. · Alfalfa
Barenbrug Holland BV (NL)
Medicago sativa L. · Alfalfa
Tom Damin, Pasture Genetics Pty Ltd
Medicago sativa L. · Alfalfa
HORTAG SEED CO.
Medicago sativa L. · Alfalfa
GIE GRASS (FR)
Medicago sativa L. · Alfalfa
W-L Research
Medicago sativa L. · Alfalfa
Medicago sativa L. · Alfalfa
CRIADERO EL CENCERRO
Medicago sativa L. · Alfalfa
Forage Genetics International
Medicago sativa L. · Alfalfa
Medicago sativa L. · Alfalfa
NORTH AMER.PLANTS
Medicago sativa L. · Alfalfa
RAGT 2N S.A.S
Medicago sativa L. · Alfalfa
Pioneer Hi-Bred International (US)
Medicago sativa L. · Alfalfa
SEMILLAS BATLLE, S.A.
Medicago sativa L. · Alfalfa
Dairyland Seed Company
Medicago sativa L. · Alfalfa
W-L Research
Medicago sativa L. · Alfalfa
Tourneur Grandes Cultures Obtentions SNC (FR)
Medicago sativa L. · Alfalfa
Velde Mike John
Medicago sativa L. · Alfalfa