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Changes in the biochemical constituents of cowpea due to seedborne fungi.

Ushamalini, C.; Rajappan, K.; Kousalya Gangadharan;

Indian Phytopathology Year: 1998 Vol: 51 Issue: 3 Pages: 258-260 Ref: 15 ref.

1998

บทคัดย่อ

Changes in the biochemical constituents of cowpea due to seedborne fungi.

The effect of seed-borne fungi of cowpea (Macrophomina phaseolina, Fusarium oxysporum f.sp. tracheiphilum, Aspergillus flavus and A. niger), on the biochemical constituents (total sugars, reducing sugars, non-reducing sugars and protein) of stored seeds was studied. The maximum reduction in total sugars, reducing sugars and non-reducing sugars was recorded in seeds inoculated with F. oxysporum f.sp. tracheiphilum. After 30 days storage, the total sugar content of seeds inoculated with F. oxysporum f.sp. tracheiphilum, M. phaseolina, A. flavus and A. niger was 12.2, 12.4, 13.7 and 13.3 mg/g, respectively, compared with 16.2 mg/g in the control. The protein content was drastically reduced by M. phaseolina infection. The reduction in protein content due to F. oxysporum f.sp. tracheiphilum, A. niger and A. flavus infection was also significant. There was a negative correlation between storage period and sugar and protein content.