Germplasm release: Saikai 35, a male and female fertile breeding line carrying Solanum phureja-derived cytoplasm and potato cyst nematode resistance (H1) and Potato virus Y resistance (Ry_chc) genes.

摘要

Saikai 35 was bred from a cross between TD0101 as the female, which was created by chromosome-doubling of a good-tasting and bacterial wilt resistant diploid variety, Inca-no-mezame, and Sakurafubuki as the male, the latter of which has H1 and Ry_chc genes showing resistance to potato cyst nematode (PCN) and Potato virus Y (PVY), respectively. All favorable traits were combined into Saikai 35, although marketable yield in the spring cropping was 20.4-21.0% lower than those of major double-cropping varieties. Saikai 35 is particularly useful for having Solanum phureja-derived cytoplasm (S/ epsilon ), which resulted in high male and female fertility. In addition, sets of very tightly linked DNA markers sandwiching H1 and Ry_chc are available. Therefore, Saikai 35 is being released as a breeding line, which can confer efficiently PCN and PVY resistance genes.