Premium
The role of the sexual stage in the over‐summering of Erysiphe graminis DC. f.sp. hordei Marchal under semi‐arid conditions
Author(s) -
KOLTIN Y.,
KENNETH R.
Publication year - 1970
Publication title -
annals of applied biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.677
H-Index - 80
eISSN - 1744-7348
pISSN - 0003-4746
DOI - 10.1111/j.1744-7348.1970.tb04586.x
Subject(s) - biology , ascospore , host (biology) , botany , germination , horticulture , spore , ecology
SUMMARY The sexual stage of E. graminis f.sp. hordei was found to be functional in Israel, and adapted to the climate of the region. Cleistothecia serve as the principal, and perhaps the only means for persistence of the pathogen in the host‐less, hot and rainless summer, and induce initial infection on wild and cultivated barleys in late autumn. The cool and rainy weather, which induces germination of seeds of the host in the field, also permits ascospore differentiation and ejection. Details are given of the conditions favouring or delaying cleistothccial maturation during and after the growing season.