The relationship between wheat seed weight, infection by Fusarium culmorum or Microdochium nivale, germination and seedling disease

The distribution of seeds by weight for three lots of winter wheat cv. Avalon infected by Fusarium culmorum and three lots of winter wheat cv. Riband infected by Microdochium nivale was determined. The distribution of infected seeds within each seed lot was then determined by isolating F. culmorum f...

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Bibliographic Details
Published in:European journal of plant pathology 1999-12, Vol.105 (9), p.859-866
Main Authors: Hare, M.C. (Harper Adams Univ. Coll., Newport, Shropshire (United Kingdom). Crop and Environment Research Centre), Parry, D.W, Baker, M.D
Format: Article
Language:English
Subjects:
FUSARIUM CULMORUM
GERMINACION
GERMINATION
GRAINE
guazatine
INFECCION
INFECTION
INSECTICIDAS
INSECTICIDE
INSECTICIDES
MICRODOCHIUM
Microdochium nivale
PESO
PLANTULAS
PLANTULE
POIDS
seed weight
SEEDLINGS
SEEDS
SEMILLA
TRITICUM
WEIGHT
Wheat
Winter wheat
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Summary:The distribution of seeds by weight for three lots of winter wheat cv. Avalon infected by Fusarium culmorum and three lots of winter wheat cv. Riband infected by Microdochium nivale was determined. The distribution of infected seeds within each seed lot was then determined by isolating F. culmorum from seeds on moist filter paper and M. nivale from seeds on potato dextrose agar. The distribution of M. nivale infected seeds between seeds of different weight was similar to that of the seed lot as a whole, whereas the distribution of F. culmorum was greater in light seeds than heavy seeds. The percentage germination of infected seeds decreased with seed weight. A similar situation was found with respect to seedling emergence in compost for F. culmorum infected seeds. However, with M. nivale infection, similar numbers of seedlings emerged from both light and heavy infected seeds. Seed treatment with guazatine increased seedling emergence for both light and heavy seed infected by M. nivale. However, seedling emergence from F. culmorum infected seed was poor even following treatment with guazatine. Poor emergence was most evident from light seed.[PUBLICATION ABSTRACT]
ISSN:0929-1873
1573-8469
DOI:10.1023/A:1008770001055