Growth Conditions of Alfalfa for Screening of Resistance to Sclerotinia trifoliorum and Microscopic Observations of Infected Tissues

Autor:	Fumihiro Fujimoto, Michio Kanbe, Hironori Koga, Kenji Okumura, Kazuhiko Mizuno
Rok vydání:	1996
Předmět:	Hypha Inoculation fungi food and beverages Biology Plant disease resistance biology.organism_classification Horticulture Agronomy Seedling Sclerotinia trifoliorum Stem rot Medicago sativa Sclerotinia
Zdroj:	Japanese Journal of Breeding. 46:261-268
ISSN:	2185-291X 0536-3683
DOI:	10.1270/jsbbs1951.46.261
Popis:	Sclerotinia crown and stem rot caused by Sclerotinia tri-foliorum Eriks. is a serious disease of alfalfa (Medicago sativa L.). Alfalfa plants of all ages are susceptible to this disease, but the damage is most severe at the seedling stage. Two experiments were carried out to determine the critical seedling stage and growth conditions under which the resistance was expressed most strongly among varieties and strains of alfalfa. Infected tissues were observed cytologically in individuals of selected SR-strains and commercial varieties. They were inocu-lated with the cultured hyphae of two isolates, one from the Aichi field and the other from the Tochigi field. When alfalfa varieties and strains grown under the low temperature/short day regime were inoculated with Sclerotinia trzfoliorum, all of them showed low survival rates in younger plants less than 6-wk-old, but variable rates in 10-wk-old plants, and the 10-wk-old plants of selected strains survived better than commercial varieties.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::f2de314874abad3ea40a590b6b192abb https://doi.org/10.1270/jsbbs1951.46.261 Zobrazit plný text záznamu