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Inoculated Host Range and Effect of Host on Morphology and Size of Macroconidia Produced by Claviceps africana and Claviceps sorghi
Author(s) -
Muthusubramanian V.,
Bandyopadhyay R.,
Tooley P. W.,
Rajaram Reddy D.
Publication year - 2005
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.1439-0434.2004.00917.x
Subject(s) - biology , sorghum , pennisetum purpureum , conidium , panicum , andropogon , botany , honeydew , pennisetum , host (biology) , sweet sorghum , poaceae , agronomy , ecology , dry matter
Twenty graminaceous plant species were evaluated for their susceptibility to the two sorghum ergot pathogens Claviceps sorghi and Claviceps africana . Five species viz., Sorghum arundinaceum , Sorghum halepense , Sorghum versicolor , Sorghum virgatum and Pennisetum glaucum were found to become infected by both pathogens via inoculation with 10 6 conidia/ml. Species which did not become infected under these conditions included Pennisetum pedicellatum , Zea mays , and species of Panicum , Brachiaria , Cenchrus , Andropogon , Dichanthium , Chrysopogon , Iseilema , Bothriochloa and Chloris. Honeydew secretions were observed from infected flowers of susceptible plant species. There was marked variation in size of macroconidia of both C. sorghi and C. africana on different hosts on which the pathogens were able to establish symptoms. Dimorphism was observed for macroconidia produced on P. glaucum , as elliptical and spindle shaped macroconidia were observed. Based on inoculation under greenhouse conditions, we conclude that C. sorghi and C. africana may have similar host ranges.