Influence of environmental conditions on spore dispersal and infection by Septoria nodorum
- 1 September 1981
- journal article
- research article
- Published by Wiley in Annals of Applied Biology
- Vol. 99 (1) , 29-34
- https://doi.org/10.1111/j.1744-7348.1981.tb05126.x
Abstract
SUMMARY: In field experiments using healthy trap plants it was found that pycniospores of S. nodorum were dispersed from diseased wheat plants whenever rain fell and occasionally in the absence of rain. Of two spring wheats tested, cv. Kolibri seemed a better ‘source’ plant and cv. Maris Butler a better ‘receptor’ when rainfall was light, but this difference was not apparent when rainfall was heavy.On 44 occasions, plants of Kolibri and M. Butler were also exposed to natural conditions immediately following artificial inoculation with S. nodorum. Infection of plants occurred on 10 occasions and was associated with the following minimum conditions: r.h, at inoculation >63%; and in the following 24 h, minimum temperature 90% and not more than 4 h with r.h. >60%.This publication has 6 references indexed in Scilit:
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