Race identification in powdery mildew (Sphaerotheca fuliginea) on melon (Cucumis melo) in Japan

Citation
K. Hosoya et al., Race identification in powdery mildew (Sphaerotheca fuliginea) on melon (Cucumis melo) in Japan, PLANT BREED, 118(3), 1999, pp. 259-262
Citations number
14
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Plant Sciences
Journal title
PLANT BREEDING
ISSN journal
0179-9541 → ACNP
Volume
118
Issue
3
Year of publication
1999
Pages
259 - 262
Database
ISI
SICI code
0179-9541(199907)118:3<259:RIIPM(>2.0.ZU;2-C
Abstract
Powdery mildew fungi isolated from single lesions on leaves of susceptible melon genotypes during semi-forcing and late-raising cultivation in Japan w ere tested. All 80 of the isolated strains were identified as Sphaerotheca fuliginca. The dominant fungus races found during semiforcing cultivation w ere race 5 in March (100%) and race 1 in May (100%), and race 1 (80%) durin g late-raising cultivation. Although the frequencies were quite low (13% in late August, but no isolation earlier in the season), two new races of S. fuliginea, which could not be identified by the differential genotypes, app eared during late-raising cultivation. These results suggest that the resis tance gene to races 1 and 5 of S. fuliginea should be introduced into the b reeding materials in Japan.