Question

Which of the following is NOT a frost tolerant species of potato ?

• A. Solanum acaule
• B. Solanum vernei
• C. Solanum commersonii
• D. Solanum tuberosum

Hint:

Wild potato species like S. acaule, S. vernei, and S. commersonii are known for good to excellent frost tolerance. They are sources of genes for breeding.
The cultivated potato, Solanum tuberosum, is generally frost-sensitive.

Answer 1

The Correct Option is D

Potato species vary significantly in their tolerance to frost. Wild potato species often possess greater stress tolerance, including frost tolerance, compared to the cultivated potato.
(1) Solanum acaule: This is a wild potato species native to high altitudes in the Andes. It is well-known for its exceptional frost tolerance, surviving temperatures well below freezing. It's a valuable genetic resource for breeding frost-tolerant potatoes.
(2) Solanum vernei: Another wild potato species from South America, also known to possess good levels of frost tolerance and resistance to various diseases.
(3) Solanum commersonii: This wild potato species is also recognized for its notable frost hardiness and adaptation to cooler climates.
(4) Solanum tuberosum: This refers to the common cultivated potato. While there is some variation among cultivars, S. tuberosum is generally considered frost-sensitive. Its foliage is damaged by even light frosts, and tubers can be damaged if the soil freezes. It is NOT a frost-tolerant species compared to many of its wild relatives. Therefore, Solanum tuberosum is the species among the options that is not frost tolerant. Solanum tuberosum