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Entwicklung von Erysiphe pisi (Echter Mehltau) an normalen Pflanzen und an Albinomutanten der Erbse ( Pisum sativum L.)
Author(s) -
Singh U. P.,
Prithiviraj B.,
Sarma B. K.
Publication year - 2000
Publication title -
journal of phytopathology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.53
H-Index - 60
eISSN - 1439-0434
pISSN - 0931-1785
DOI - 10.1111/j.1439-0434.2000.00558.x
Subject(s) - darkness , biology , powdery mildew , pisum , sativum , appressorium , haustorium , botany , chlorophyll , mildew , horticulture , conidium , host (biology) , ecology
Early development of Erysiphe pisi (powdery mildew) was studied on normal peas (with chlorophyll), natural albino mutants (without chlorophyll) and on chimeric leaves of pea induced by ethyl methane sulphonate (EMS) under different light exposures. Different light regimes [continuous light; continuous darkness; short day (8 h light/16 h darkness); long day (16 h light/8 h darkness)] did not influence the early development of E. pisi on pea leaves. However, under continuous darkness a lower number of haustoria was observed in comparison with other treatments. Erysiphe pisi failed to develop on naturally developed complete albino leaves as well as on the albino parts of chimeric leaves induced by EMS treatment. A lesser number of appressoria and haustoria was observed on albino leaves. Results suggest that the presence of some nondiffusable chemical(s) in normal leaves of pea is essential for the establishment of successful biotrophy.