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In: Biology

list 7 most common diseases of potato including a) the disease and pathogen names (common and...

list 7 most common diseases of potato including a) the disease and pathogen names (common and scientific), b) plant symptoms, c) microscopic features, d) references for the information. Note the similarities and differences to what you have observed.

Expert Solution

Ans -7 most common diseases of potato are as follows-

(A) - Bacterial wilt

Caused by Ralstonia solanacearum . It's common name is bacterial wilt of potato.

Plant symptoms are- Leaves becomes yellow at their bases and then the whole plant wilts and dies.

(B) - Septoria leaf spot

Caused by fungus Septoria lycopersici.

Plant symptoms are- small, round to irregular spots with the grey centre and dark margins on leaves.

(C)- Late blight - .

Caused by - Phytophthora infestans .

Plant symptoms are- Affected stems begin to blacken from their tips , and eventually dry out.

(D)- Early blight

Caused by - Fungus Alternaria solani.

Plant symptoms are- Small, black lesions especially on older foliage. Spots enlarge with time.

(E)- Common scab

Caused by- Streptomyces scabies.

Plant symptoms are- Several type of cork like lesions on the surface of potato tuber.Damaged tuber have rough , cracked skin with scab like spots.

(F)- Black scuff/ canker

Caused by- Rhizoctonia solani

Plant symptoms are- Infected tuber causing black scurf which is purely cosmetic , reduces tuber appearance and does not reduce yield.

(G)- Potato spindle tuber disease

Caused by - Potato spindle tuber viroid

Plant symptoms are-Mild foliar symptoms including smaller leaves that curl downwards , giving the plant a more upright growth habit. Plants can also be stunted and leaves can be grey and destorted.

References- William Surman , Nowicki

gladiator answered 2 years ago

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