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| 02235cam 2200337za 4500 |
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| 001 | 9.823161 |
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| 003 | CaOODSP |
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| 005 | 20221107143834 |
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| 007 | cr ||||||||||| |
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| 008 | 160824s1931 oncaod|#o f000 0 eng d |
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| 040 | |aCaOODSP|beng |
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| 043 | |an-cnp-- |
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| 086 | 1 |aA12-2/140-1931E-PDF |
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| 100 | 1 |aJohnson, Thorvaldur. |
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| 245 | 12|aA study of the effect of environmental factors on the variability of physiologic forms of Puccinia Graminis Tritici. Erikss. and Henn. |h[electronic resource] / |cby Thorvaldur Johnson. |
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| 246 | 1 |iAt head of title: |aStudies in cereal diseases|nVI |
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| 260 | |aOttawa : |bDivision of Botany, Dominion Experimental Farms : |bDominion of Canada Department of Agriculture, |c1931. |
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| 300 | |a76 p. : |bill. |
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| 490 | 1 |aBulletin, New series ; |vno. 140 |
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| 500 | |aTitle from cover. |
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| 500 | |aOriginally presented as the author's thesis (doctoral-- University of Minnesota). |
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| 500 | |aHistorical publication digitized from Agriculture and Agri-Food Canada collection. |
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| 504 | |aIncludes bibliographical references. |
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| 505 | 2 |aPartial contents: Part I, Studies on the effects of environmental factors on the uredinial development of certain physiologic forms of Puccinia Graminis Tritici -- Part II, Studies on the effects of environmental factors on the formation and germiniation of teliospores of certain physiologic forms of Puccinia Graminis Tritici. |
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| 520 | 0 |a"This study falls naturally into two divisions. The first is concerned with the effect of environmental conditions on the development of the uredinial stage of wheat stem rust; the second deals with their effect on the formation and germination of the teliospores. In both these fields the role of environment has been made manifest, partly through observation, partly through controlled experiments"--Introd., p. [3]. |
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| 692 | 07|2gccst|aCereals |
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| 692 | 07|2gccst|aPlant diseases |
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| 710 | 1 |aCanada.|bDepartment of Agriculture. |
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| 710 | 1 |aCanada. |bDivision of Botany. |
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| 830 | #0|aBulletin (Canada. Department of Agriculture)|vno. 140|w(CaOODSP)9.812039 |
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| 856 | 40|qPDF|s6.52 MB|uhttps://publications.gc.ca/collections/collection_2016/aac-aafc/agrhist/A12-2-140-1931-eng.pdf |
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