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EFFECT OF SPORE CONCENTRATION, LIGHT AND RELATIVE HUMIDITY ON SPORE GERMINATION AND GERM TUBE GROWTH OF CORYNESPORA CASSIICOLA (BERK. AND CURT.) WEI

Article Id: ARCC2119 | Page : 12-15
Citation :- EFFECT OF SPORE CONCENTRATION, LIGHT AND RELATIVE HUMIDITY ON SPORE GERMINATION AND GERM TUBE GROWTH OF CORYNESPORA CASSIICOLA (BERK. AND CURT.) WEI.Agricultural Science Digest.2009.(29):12-15
G. Bindu Madhavi and K.V.M. Krishna Murthy1
Address : Regional Agricultural Research Station, Lam, Guntur-522 034, India

Abstract

Maximum spore germination of Corynespora cassiicola was obtained with the spore
concentration of 125 spores/ml. In general spore germination increases with the decrease
of spore concentration. Incubation of spores under alternate darkness and light resulted in
maximum spore germination (91.2%) and germ tube growth (131.3 μm) followed by
incubation of spores in continuous light and continuous darkness. Spores germinated over
a range of 75-100% relative humidity and maximum spore germination (95.5%) and germ
tube growth (187 μm) was observed at 95 % relative humidity.

Keywords

Spore germination Relative humidity Spore concentration Germ tube growth.

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