Search results
Results From The WOW.Com Content Network
Although an excised corn resembles a barleycorn in shape, the two words 'corn' are unrelated. The word 'corn' for a callus derives from the Latin cornus 'horn', and is related to the Greek keras (whence keratin). The 'corn' of 'barley corn' descends from the Indo-European word for 'grain'. The similarity in form is a historical accident.
The fungus overwinters as cleistothecia on straw, and in milder climates, also as mycelium and conidia on stubble and straw or volunteer barley and certain grasses. . Windborne ascospores or conidia are the primary inoculum (also known as the propagule) and can be dispersed over considerable
Fungal diseases; Anthracnose [1]: Colletotrichum cereale Manns. Barley stripe: Pyrenophora graminea = Drechslera graminea Cephalosporium stripe: Hymenula cerealis = Cephalosporium gramineum
Loose smut of barley is caused by Ustilago nuda. [2] It is a disease that can destroy a large proportion of a barley crop. Loose smut replaces grain heads with smut, or masses of spores which infect the open flowers of healthy plants and grow into the seed, without showing any symptoms.
Scald is a foliar disease of barley affecting the leaves and sheaths of the plant; however, lesions may also occur on coleoptiles, glumes, floral bracts and awns.Initial symptoms are oval, water-soaked, grayish-green spots, 1.0-1.5 cm long.
Blumeria graminis (commonly called barley powdery mildew or corn mildew) is a fungus that causes powdery mildew on grasses, including cereals.It is the only species in the genus Blumeria.
Most of the barley cultivars grown in the United States are susceptible to Puccinia hordei.Nineteen seedling resistance genes (i.e. Rph1 to Rph19) have been identified, but only three (Rph3, 7 and 9) have been deployed in commercial cutlivars worldwide. [2]
Symptom on wheat caused by F. graminearum (right: inoculated, left: non-inoculated). Fusarium ear blight (FEB) (also called Fusarium head blight, FHB, or scab), is a fungal disease of cereals, including wheat, barley, oats, rye and triticale. [1]