Effects of Wetness Duration and Grain Development Stages on Sorghum Grain Mold Infection

Plant Disease
S S NaviX B Yang

Abstract

Grain mold caused by a complex of fungi is an economically important disease of sorghum worldwide. Little is known about the epidemiology of sorghum grain mold, which is essential for its management. Studies were conducted to quantify the effects of wetness duration on grain mold development under controlled conditions at ICRISAT. Six major sorghum grain mold fungi determined from previous field experiments, Curvularia lunata, Cladosporium oxysporum, Bipolaris australiensis, Fusarium moniliforme, F. pallidoroseum, and Phoma sorghina, were used. Panicles of a pot-grown mold-susceptible sorghum line, IS 10513, were spray inoculated with each fungus at five growth stages: flowering (F), milk (M), soft dough (S), hard dough (H), and physiological maturity (P), and were incubated in dew chambers for 0, 16, 24, 40, 48, and 72 h. Then, the plants were placed on greenhouse benches at 25 ± 1°C to allow grain mold infection to develop. Eight days after treatments, grains from F, M, and S stages were plated onto potato dextrose agar, while those from H and P stages were incubated in blotter paper humid chambers at 28 ± 1°C. Fungal colonization of grains were scored after 7 days. Results indicated a significant (P < 0.01) correlation betwe...Continue Reading

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Citations

Jul 8, 2017·Phytopathology·Deanna L Funnell-HarrisJeffrey F Pedersen
Jul 23, 2016·Drug Testing and Analysis·A I DecloedtL Vanhaecke
May 26, 2018·Journal of the Science of Food and Agriculture·Gabriela A PenaSofía N Chulze
Jan 28, 2015·Phytopathology·Deanna L Funnell-HarrisJeffrey F Pedersen
Jan 28, 2017·Genome Announcements·Rodrigo C OliveiraDebora F Rodrigues
Aug 22, 2016·Brazilian Journal of Microbiology : [publication of the Brazilian Society for Microbiology]·Aícha Daniela Ribas E RibasAlexandre Meneghello Fuentefria
Jul 10, 2018·Food Science & Nutrition·Theodora I EkwomaduMulunda Mwanza
Jun 1, 2011·Plant Disease·Deanna L Funnell-Harris, Jeffrey F Pedersen

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