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ARS Home Midwest Area West Lafayette, Indiana Crop Production and Pest Control Research Research Publications at this Location





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Title:   Author  item
                                            KISHA, THEODORE - PURDUE UNIVERSITYitem
                                            Goodwin, Stephen

                                                         - *Steve*item
                                            OHM, HERBERT - PURDUE UNIVERSITY
  Submitted to: Agronomy Abstracts
                                    Publication Type: Abstract Only
                                    Publication Acceptance Date: 11/8/2000
                                    Publication  Date: N/A
                                    Citation: N/AInterpretive Summary:
                                Technical Abstract: Detached leaves and spikelets from wheat lines both susceptible and resistant to Stagonospora nodorum blotch were evaluated in Benzimidazol agar.  The detached-leaf assay consistently separated resistant and susceptible lines.  Lesion size measured ten days after inoculation gave the greatest separation among lines.  Latent period,  the time from inoculation to the appearance of pycnidia, was significantly longer in the more resistant wheats than in the susceptible ones.  Cultivars and lines observed as resistant in the field were consistently identified as resistant, while those known to be susceptible in the field also stood out as susceptible by the detached-leaf assay.  Quantitative evaluation using detached glumes was difficult, because infection appeared to affect the entire spikelet.  However, a subjective evaluation separated resistant lines  from susceptible.  The resistance in glumes has been reported as genetically distinct from that in leaves.  Our results confirmed that resistance in leaves does not correlate with that in glumes.


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