J. Helbig, Field and laboratory investigations into the effectiveness of Rhodotorula glutinis (isolate 10391) against Botrytis cinerea Pers. ex Fr. in strawberry, Z PFLANZENK, 108(4), 2001, pp. 356-368
Citations number
33
Categorie Soggetti
Plant Sciences
Journal title
ZEITSCHRIFT FUR PFLANZENKRANKHEITEN UND PFLANZENSCHUTZ-JOURNAL OF PLANT DISEASES AND PROTECTION
Rhodotorula glutinis (isolate 10391) was isolated from mature strawberry fr
uits and tested in laboratory and Field investigations for antagonistic act
ivity against Botrytis cinerea, the causal agent of grey mould in strawberr
ies. The cell suspension of R. glutinis effectively reduced germination rat
e and germ tube growth of conidia of B. cinerea in aqueous strawberry fruit
pulp suspension (1 %) by 53.2 % and 68.8 %, respectively. The antagonistic
activity of R. glutinis on detached strawberry leaf disks strongly depende
d on temperature and cell density of the antagonist. Highest effectiveness
was observed at 10 degreesC, which has major importance for field applicati
ons. The effectiveness of R. glutinis treatments in Field trials carried ou
t during blossom to control grey mould in fruits was 12.8 % in 1996 (with a
rtificial inoculation) and 33.2 % in 1999 as compared to the control. The a
ddition of CaCl2 (1 %) to the antagonist preparation (in 1999) had no posit
ive influence on the effectiveness of R. glutinis.