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Different Genetic Mechanisms Control Foliar and Tuber Resistance to Phytophthora infestans in Wild Potato Solanum verrucosum
- Abstract::
- Late blight, caused by the oomycete pathogen, Phytophthora infestans, is a devastating disease of potatoes and tomatoes. A key long-term management strategy for combating this disease is to develop potato cultivars with broad-spectrum and durable resistance through identification and integration of major resistance genes. In support of previous results, we have determined that some accessions of the wild potato species Solanum verrucosum contain strong foliar resistance to P. infestans while others are susceptible. In addition, whole- and wounded-tuber inoculations revealed that most accessions lacked resistance to tuber infection. However, one accession (PI 570643) contained little foliar resistance but expressed tuber resistance, suggesting that expression of these two phenotypes in this species is not correlated.
- Author(s):
-
Liu, Zhenyu , Halterman, Dennis
- Subject(s):
-
Solanum verrucosum , wild relatives , plant genetic resources , Phytophthora infestans , fungal diseases of plants , foliar diseases , tubers , postharvest diseases , disease resistance , genetic resistance , cultivars , introgression , phenotype , genetic correlation
- Description:
- Includes references
- Source:
- American journal of potato research : an official publication of the Potato Association of America 2009 Nov., v. 86, no. 6
- Language:
- English
- Year:
- 2009
- Collection:
-
Journal Articles, USDA Authors, Peer-Reviewed
- File:
-
Download [PDF]
- Rights:
- Works produced by employees of the U.S. Government as part of their official duties are not copyrighted within the U.S. The content of this document is not copyrighted.
