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Journal of Integrative Agriculture  2019, Vol. 18 Issue (10): 2255-2263    DOI: 10.1016/S2095-3119(19)62718-8
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Inheritance of steroidal glycoalkaloids in potato tuber flesh
PENG Zhen1, 2, WANG Pei1, 2, TANG Die2, SHANG Yi1, LI Can-hui1, HUANG San-wen2, 3, ZHANG Chun-zhi2
1 The CAAS-YNNU Joint Academy of Potato Sciences, Yunnan Normal University, Kunming 650500, P.R.China
2 Genome Analysis Laboratory of the Ministry of Agriculture and Rural Affairs, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen 518124, P.R.China
3 Key Laboratory of Biology and Genetic Improvement of Horticultural Crops of the Ministry of Agriculture and Rural Affairs, Sino-Dutch Joint Laboratory of Horticultural Genomics, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, P.R.China
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Potato (Solanum tuberosum L.) is the third most important food crop worldwide after wheat and rice in terms of human consumption.  A critical domestication trait for potato was the decrease of toxic steroidal glycoalkaloids (SGAs) in tuber flesh.  Here, we used a diploid F2 segregating population derived from a cross between S. tuberosum and the wild potato species Solanum chacoense to map the quantitative trait loci (QTLs) associated with the regulation of SGAs content in tuber flesh.  In a three-year study, we identified two QTLs on chromosomes 2 and 8 affecting SGAs content in tuber flesh.  The QTL on chromosome 8 harbors 38 genes that are co-expressed with the GLYCOALKALOID METABOLISM genes.  These findings lay the foundation for exploiting the genes controlling SGAs content in tuber flesh and they provide a theoretical basis for the use of wild germplasm in potato breeding.
Keywords:  steroidal glycoalkaloids        domestication        tuber flesh        QTL mapping  
Received: 19 January 2019   Accepted:
Fund: This work was also supported by the Ministry of Agriculture and Rural Affairs of China, the Shenzhen Municipal and Dapeng District Governments, China.
Corresponding Authors:  Correspondence ZHANG Chun-zhi, Tel: +86-755-23250675, E-mail:   

Cite this article: 

PENG Zhen, WANG Pei, TANG Die, SHANG Yi, LI Can-hui, HUANG San-wen, ZHANG Chun-zhi. 2019. Inheritance of steroidal glycoalkaloids in potato tuber flesh. Journal of Integrative Agriculture, 18(10): 2255-2263.

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