Myrothecium Species on Chilli Seeds, Their Pathogenicity and Response to Temperature and Light

doi:10.3321/j.issn:1000-7091.1989.03.016

Abstract

Abstract: Twenty samples of chilli seeds harvested in 1986 from different parts of Beijing were tested by the blotter method for identification of Myro-thecium roridum and Myrothecium verrucaria. Both M. roridutnana M. verrucaria were observed in 6 samples with infection ranging from 0.5 to 3% and 0.5 to 4.5% respectively. They were characterized on seed by the formation of black sporodochia. Each Spor odochium is surrounded by a white, narrow mycelial rim. After 20 days following inoculation can m. roridum and m. verrucaria produce lesions of leaf spots. Both fungi grew best on potato dextrose agar under near ultraviolet light, and daylight was better than darkness. The optimum temperature for growuh was 28℃ for m. roridum and 32℃ for m. verrucaria.

Key words: Myrothecium, Seed, Chilli

Liang Lizhe. Myrothecium Species on Chilli Seeds, Their Pathogenicity and Response to Temperature and Light[J]. ACTA AGRICULTURAE BOREALI-SINICA, 1989, 4(3): 94-98. doi: 10.3321/j.issn:1000-7091.1989.03.016.

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