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2003•Zhongguo shuidao kexueRequires access

Preliminary Study on Inoculation Method of Rice False Smut and Its Effect

Juncheng Zhang

Open publisher page 9 citations

Abstract

Artificial inoculation of Ustilaginoidea virens (Cooke.) Tak. culture d in vitro was made by injecting at nightfall during booting stage of rice . The mixture of hyphae broken and conidia of the pathogen could cause serious disease of false smut. The maximum percentage of infected panicle(PIP) was 100 %, the maximum number of spore balls(NSB) of a panicle was 106, and the maximum disease index(DI) was 85.5.Disease severities caused by different strains, and disease severities of different rice materials caused by the pathogen were different; and there was obvious correlationship between DI and PIP, and between DI and average NSB of a panicle. It seemed that there existed specific interaction between strain a nd variety.

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What this paper is about

Artificial inoculation of Ustilaginoidea virens (Cooke.) Tak. culture d in vitro was made by injecting at nightfall during booting stage of rice . The mixture of hyphae broken and conidia of the pathogen could cause serious disease of false smut. The maximum percentage of infected panicle(PIP) was 100 %, the maximum number of spore balls(NSB) of a panicle was 106, and the maximum disease index(DI) was 85.5.Disease severities caused by different strains, and disease severities of different rice materials caused by the pathogen were different; and there was obvious correlationship between DI and PIP, and between DI and average NSB of a panicle. It seemed that there existed specific interaction between strain a nd variety.

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Available abstract

Artificial inoculation of Ustilaginoidea virens (Cooke.) Tak. culture d in vitro was made by injecting at nightfall during booting stage of rice . The mixture of hyphae broken and conidia of the pathogen could cause serious disease of false smut. The maximum percentage of infected panicle(PIP) was 100 %, the maximum number of spore balls(NSB) of a panicle was 106, and the maximum disease index(DI) was 85.5.Disease severities caused by different strains, and disease severities of different rice materials caused by the pathogen were different; and there was obvious correlationship between DI and PIP, and between DI and average NSB of a panicle. It seemed that there existed specific interaction between strain a nd variety.

Key concepts: Panicle, Smut, Inoculation, Biology, Conidium, Spore, Pathogen, Horticulture

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