Sunday , October 22 2017
Home / Articles / Major Crops / Wheat Glossary

Wheat Glossary




  • Alternate host: A second host species required by some rusts and other organisms to complete their life cycle.

    Chlorosis: Yellowing or whitening of normally green plant tissue.

    Coalesce: To combine, to fuse or come together.

    Conidiophore :A threadlike stalk upon which conidia (spores) are produced.

    Conidium (pl. conidia) : Any asexual spore formed on a conidiophore.

    Diapause :A period of dormancy

    Exudate:  Gel-like accumulation of spores orbacterial ooze.

    Foot rot : Disease symptoms, such as discoloration, necrosis and decay, affecting the roots                         and basal portions of the plant or culm.

    Gall :A localized proliferation of plant or parasite tissue that produces an abnormal growth or swelling, usually caused by pathogenic organisms, nematodes, or insects.

    Honeydew : A sticky exudate (containing conidial)  produced during one stage of the life cycle of Claviceps purpurea.

    Hypha (pl. hyphae)  :  A tubular, threadlike filament of fungal  mycelium.

    Immune: Not affected by pathogens.

    Inoculum :Spores or other diseased material that may cause infection.

    Lesion: A visible area of diseased tissue on an infected plant.

    Mosaic :A pattern of disease symptoms displaying mixed green and lighter colored patches.

    Mycelium (pl. mycelia):A mass of hyphae that form the body of a fungus.

    Necrosis: Death of plant tissue, usually accompanied by discoloration.

    Pathogen :A microorganism that causes disease.

    Primary: Spores or fragments of a mycelium 

    inoculum :capable of initiating a disease.

    Pustule :A spore mass developing below the epidermis, usually breaking through at                   maturity.

    Resistance : Inherent capacity of a host plant to prevent or retard the development of an                        infectious disease.

    Sclerotium : A dense, compact mycelial mass capable(pl. sclerotia) of remaining dormant for extended periods.

    Senescence :The phase of plant growth that extends from full maturity to death.

    Spore : A minute reproductive unit in fungi and lower plant forms.

    Sporulation: The period of active spore production.

    Striate : Displaying narrow parallel streaks or bands

    Susceptible: Being subject to infection or injury by a  pathogen; non-immune.

    Symptom: A visible response of a host plant to a  pathogenic organism.

    Telium  (pl. telia) :Postule containing teliospores.

    Teliospore: A thick-walled resting spore produced by rust and smut fungi.

    Tolerant : The ability of a host plant to develop and reproduce fairly efficiently while                         sustaining disease.

    Transmission : The spread of a disease agent among individual hosts.

    Urediospore :An asexual spore of the rust fungi.

    Vector : An organism capable of transmitting inoculum.

    Virulence :The relative ability of a microorganism to overcome the resistance of a host.

    Water soaked : Appearing wet, darkened, and partially transparent.

    Courtesy USDA

     

    About admin

    Check Also

    Potential areas for oil seeds production

    Report Issue: * Suggest Edit Copyright Infringment Claim Article Invalid Contents Broken Links Your Name: …

    Leave a Reply

    Be the First to Comment!

    Notify of
    avatar
    wpDiscuz