TPS technology in Nepal
- In Nepal, preliminary work on true potato seed (TPS) was started as early as in 1978.
- The actual practices of potato grow through the use of TPS was started during 1992 /93 (PDS, 1998).
- The Sarlahi farm and Nucleus Seed Potato Production centre, Nigale, Sindhupalchock has been engaged in TPS production
- True Potato Seed (TPS) is actual seed developed and produced from the hybridization of two different genotypes of potato ( different parental line)
Selection of Parental line
a) Male line :
- Fertile pollen, indeterminate growth, disease tolerant and of good combining ability Male line is selected from Solanum andigena
- TPS-13 (white flower), TPS-67 (pink flower)
b) Female Line :
- Blight tolerant, pollen sterility, good combining ability and high tuber yielder Female line is selected from Solanum tuberosum
- MF-I, MF-II, TPS-7 (White flower female line)