827 resultados para Utilidade - Utility


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Date on Bibliographic Data Sheet: June 1976.

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"Pronounced before the Philomathaean Society of Pennsylvania College, at Gettysburg, Pa. on the Anniversary, February 14, 1840."

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Mode of access: Internet.

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From Barnard's Journal of education, March, 1856.

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Issued by Public Service Commission, July 26, 1913-Feb.1937; Public Utility Commission, Mar.31, 1937-Date

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"Publication no. 95-120."

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Thesis (Ph.D.)--University of Washington, 2016-06

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Phytophthora root rot, caused by Phytophthora medicaginis, is a major limitation to lucerne production but it can be managed through the use of resistant cultivars. Current resistance screening methods, using mature plants or post-emergence seedling assays, are costly and time consuming. The use of zoospore inoculum on detached leaves and intact cotyledons as an assay for plant resistance was assessed using genetically defined segregating populations. The detached leaf assay was a reproducible test, but this test could not be used for accurately predicting root ratings. The cotyledon tests using zoospores gave results at the population level that were indicative of the root responses of 19 cultivars and lines tested. The cotyledon reaction of individual plants also showed a strong association with root response. The cotyledon test, while not completely predictive of mature root responses, allowed the selection of Phytophthora resistant plants at a higher frequency than could be achieved by random selection.