|HAYNES, KATHLEEN - Retired ARS Employee|
|QU, XINSHUN - Pennsylvania State University|
Submitted to: American Journal of Potato Research
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 6/8/2022
Publication Date: 6/17/2022
Citation: Haynes, K.G., Qu, X., Bamberg, J.B. 2022. Germplasm release: true potato seed (TPS) from a late blight resistant, long-day adapted diploid potato population which is segregating for early blight resistance. American Journal of Potato Research. https://doi.org/10.1007/s12230-022-09882-3.
Interpretive Summary: Late blight is a serious disease of cultivated potatoes. New sources of resistance can be found in wild potato relatives that breeders may utilize to develop resistant cultivars. A population of potatoes derived from crosses with resistant wild potato relatives has been improved for resistance to late blight and is segregating widely for early blight resistance, tuber skin color, tuber shape, eye depth, flesh color and specific gravity. True seed of this population is being released to the potato breeding community as improved disease resistant breeding material to use in developing new cultivars.
Technical Abstract: True potato seed (TPS) from a bulk-pollinated, long-day adapted, late blight resistant diploid population is being released to the potato breeding community. The population consisted of 72 maternal half-sib families derived from a hybrid population of Solanum phureja-S. stenotomum originally bred for adaptation to long-day conditions in North Carolina, and which subsequently underwent four cycles of selection for resistance to late blight in Pennsylvania; TPS from 58 of these families are being released. The population is segregating widely for early blight resistance and tuber skin color, shape, eye depth, flesh color and specific gravity. TPS has been deposited with the US Potato Genebank in Sturgeon Bay, WI and may be requested from them.