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Lenape (potato)
Lenape (B5141-6) is a potato variety first released in 1967 and named after the Lenape Native American tribe. It was bred by Pennsylvania State University in collaboration with the Wise Potato Chip Company from Delta Gold and a wild Peruvian potato (''Solanum chacoense'') known for its resistance to insects.〔 It was selected for its high specific gravity (percentage dry matter) and low sugar content which made it ideal for producing potato chips〔 but it was also immune to potato virus A and resistant to common strains of late blight. It is of medium-late maturity and produces round, white tubers with shallow eyes.〔
==Glycoalkaloid content==
After the Lenape variety was released for commercial production, a potato breeder in Ontario ate some to see if they may be suitable as new potatoes but soon felt nauseous. When the same occurred next time he ate them, he sent a sample to be analysed by a biochemist who found they contained exceptionally high levels of glycoalkaloids (mainly solanine and chaconine), the natural toxins found in potatoes that help protect them from pests and disease. Lenape potatoes collected from around Canada were found to contain over 16–35 mg of glycoalkaloids per 100 g of fresh potato compared to 3–18 mg in other varieties.〔 Samples grown at 39 locations around the US had an average of 29 mg per 100 g of potato but ranged from 16–65 mg compared to an average of 8 mg for five other varieties. Previously, high levels of glycoalkaloids in potatoes were associated with damage during harvest or potatoes that turned green due to exposure to light, rather than being genetically determined.〔 The variety was removed from the market in 1970 and scientists recommended that in future new potato varieties be tested for their glycoalkaloid content before widespread distribution.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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