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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
91

On the use of histochemical tests for the demonstration of cytochrome oxidase in potato tubers infected by Phytophthora infestans (Mont.) De Bary.

Harwig, Joost. January 1964 (has links)
No description available.
92

Leucostoma canker of larch in Quebec.

Lavallée, André. January 1963 (has links)
No description available.
93

Studies of factors affecting certain nematopagous hyphomycetes.

Thomas, Garfield. B. January 1963 (has links)
No description available.
94

Verticillium wilt of horticulture crops in Quebec.

Devaux, Alain. M-L. January 1964 (has links)
No description available.
95

Studies on the seedling disease of barley caused by helminthosporium sativum P.K. & B.

Julien, Julien Bernard January 1950 (has links)
No description available.
96

The toxemia of halo blight of bean.

Hoitink, Henricus. A. January 1964 (has links)
No description available.
97

Aureobasidium Microstictum (Bubak) Cooke, The Casual Agent of Leaf Streak of Daylily (Hemerocallis L.), and Its Involvement in Spring Sickness of Daylily

Kobayashi, Hideka January 1998 (has links)
No description available.
98

NONHOST RESISTANCE TO BEAN POD MOTTLE VIRUS IN NICOTIANA BENTHAMIANA

Lin, Junyan 29 August 2013 (has links)
No description available.
99

Influence of the Environment on the Occurrence of and Hybrid Stability to Gibberella ear rot and Deoxynivalenol in Maize and the Risk of Deoxynivalenol Contamination of Grain

Dalla Lana da Silva, Felipe January 2020 (has links)
No description available.
100

Turnip crinkle virus (TCV) and its subviral RNAs

Li, Xiao Hua 01 January 1991 (has links)
TCV isolate, TCV-M, supports a family of satellite (sat-) RNAs. The virulent sat-RNA C intensifies TCV symptoms on turnip cultivar Just Right. In this thesis, I report that sat-RNA C (356 b) exacerbates symptoms on all hosts where TCV produces visible symptoms including cultivars of Brassica rapa and Arabidopsis thaliana. This finding has led to studies of TCV-resistance using A. thaliana, a small plant with a well characterized genome, as a host. After screening over 6,000 M2 A. thaliana plants from EMS treated Columbia cultivar seeds and 22 ecotypes of A. thaliana, ecotype Dijon was found to be resistant to TCV. A second isolate, TCV-B, supports an RNA species with a size similar to that of sat-RNA C. Northern hybridization and cDNA cloning and sequencing demonstrate that this RNA is actually a defective interfering (DI) RNA, denoted DI RNA G. Infection of turnip with virus derived from cloned transcripts of TCV-B resulted in de novo generation of a DI RNA, DI1 RNA. Unlike DI RNAs associated with other plant viruses (or animal viruses), TCV DI RNAs intensify TCV symptoms. To understand sequences required for DI RNA infectivity, a series of mutation have been generated in a full length cDNA copy of DI RNA G. Stepwise deletions at base 98 of DI RNA G, at which an Apa I linker had been inserted, has shown that DI RNA GA (DI RNA G with a 8-base insertion at base 98) harboring deletions of bases 74-98 or less are infectious. However, deletion of bases 73-98 or more abolishes RNA infectivity. DI RNA GA with a deletion of bases 107-124 is infectious. However, DI RNA GA harboring a deletion of bases 107-138 is not infectious. I have found that infectivity of RNA harboring 31- or 32-base deletions can be restored by inserting foreign sequences into deletion sites. This implies that at least 71 bases (including the 8-base insertion) in DI RNA GA near the 5$\sp\prime$ end are not specifically required for RNA infectivity. By combining deletions of infectious clones to generate larger deletions (40 or 43 bases deleted), I demonstrate that the infectivity of the RNA is abolished. This result suggests that size of the DI RNA is important in maintaining RNA infectivity.

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