Effect of Netted scab (Streptomyces sp.) on Bio-chemical attributes of Potato cultivars

Studies revealed a significantly increased in the level of reducing sugar and sucrose content in nine potato cultivars infected with netted scab. Similarly, total free amino acid content was also increased drastically in Cvs, in Kufri Surya, K. Anand, K. Bahar and K. Pukhraj. Phenol content resulted increased trend in the infected tubers while dry matter content on the other hand decreased substantially (4.9–15.8%). It is therefore, concluded that tubers infected with netted scab increased bio-chemical attributes except dry matter, resulting poor quality of tubers, not fit for processed products. These results may be used for bio-chemical base of resistance against this disease in future.