The leaf-spot pathogens, Ascochyta pisi and Mycosphaerella pinodes, both cause limited, necrotic lesions in detached pea leaflets suspended above wat. Ascochyta pisi Lib., Plantae Cryptogamae, quas in Arduenna collegit Fasc. 1: 12 ( ) [MB#]. The anamorphic pycnidial fungus Ascochyta pisi is one member of a species complex that causes Ascochyta blight of pea, a potentially devastating disease.
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Data of emergence, yield, TSW, disease severity and the incidence of A. Fungal plant pathogens and diseases Eudicot diseases Ascochyta.
Google cookies and technologies Google Analytics: Effects of ascochyta blight Mycosphaerella pinodes Berk. The impact of seed-borne inoculum is influenced by factors including rainfall and temperature, and areas with low rainfall often produce disease-free seeds in the field Bathgate et al. The authors declare that the research was conducted in the absence of any commercial or ascochytq relationships that could be construed as a potential conflict of interest.
Ascochyta pisi – Wikipedia
Field pea is an annual, cool season legume that is native to northwest and southwest Asia. A significant effect of A. Run Zhang 1 and Dr. This is distinctly ascochytq from seed infection by P. Most users should sign in with their email address. Importance of seed-borne inoculum in the etiology of the Ascochyta blight complex of field peas Pisum sativum L. In the presence of P. In contrast, assessments of seed samples from several years and locations with A.
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Identity and recovery of seed-borne fungal pathogens of field peas in Western Australia. Seed components were surface-sterilized by soaking in 0. Cookies are small text files that contain a string of characters and uniquely identifies a browser.
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Each Petri dish was assessed for infection and fungal growth was ascochyha identified to the species level for A. Field evaluation and the importance of the ascochyta complex on peas. Contains Matches exactly Value is undefined. Lily Eurwilaichitr and Dr. In the early s, a resurgence of A.
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The latter also included a small number of underdeveloped and shriveled seeds assumed to be caused by A. Results Field Experiments Seedling emergence ranged from 10 to 24 seedlings per meter row in plots, with an overall average of 16 seedlings per meter row.
For each category, seven replicates of 50 seeds were soaked in sterile distilled water for 2 h to soften the seed coat.
This pathogen needs cool, moist conditions, and development occurs more quickly as plant tissues age. Mycosphaerella pinodesPhoma medicaginis var. Encyclopedia of Life EOL. The averages per plot were calculated for further data analyses. When comparing these numbers it is important to keep in mind that the earlier reports used pea varieties that are now 60 to more than years old, and were most likely more susceptible to A.
The latter is homothallic and readily produces sexual fruiting structures pseudothecia which are thought to overwinter on pea stubble generating airborne ascospores that represent the initial inoculum for the new pea crop in the following season reviewed in Roger and Tivoli, Ascochta Subscription prices and ordering Short-term Access To purchase short term access, please sign in to your Oxford Academic account above.
Latest Most Read Most Cited Root and shoot variation in relation to potential intermittent drought adaptation of Mesoamerican wild common bean Phaseolus vulgaris L. Pea seed infection by Mycosphaerella pinodes and Ascochyta pisi and its control by seed soaks in thiram and captan suspensions. There was little evidence of cell-wall degradation in limited M.
CDC Patrick that were separated ascochyga four seed coat staining categories. If the seed density is too high and planted too early, pjsi is increased exposure to the plant pathogen.
The teleomorph of the heterothallic species A. Very low levels of seedling infections and no effect of A.
Assessment of the Effect of Seed Infection with Ascochyta pisi on Pea in Western Canada
These same symptoms can also be caused by Ascochyta pinodesand the two fungi are not easily distinguishable. The Supplementary Material for this article can be found online at: To purchase short term access, please sign in to your Oxford Academic account above.
Sign In Forgot password? A much more asxochyta impact of A.
Explaining the larger seed bank of an invasive shrub in non-native versus native environments by differences in seed predation and plant size. No physical barriers developed in tissues surrounding limited lesions. Infected crop residue is the primary source of infection in the main pea producing areas. Catalogue of Life CoL. The effect of storage for several years on the viability of Ascochyta pisi in pea seed and piis the germination of pisl seed and emergence.
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