2014
Discovery and introgression of novel genes for resistance to SCN soybean germ plasm of early maturity groups
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Contributor/Checkoff:
Iowa Soybean Association
Category:
Sustainable Production
Keywords:
NematodePest
Parent Project:
Introgression of novel genes conferring resistance to SCN in soybean germ plasm of early maturity grow
Lead Principal Investigator:
Silvia Cianzio, Iowa State University
Co-Principal Investigators:
Prakash Arelli, University of Tennessee-Institute of Agriculture
Project Code:
Contributing Organization (Checkoff):
Iowa Soybean Association
(n/a)
Institution Funded:
Iowa State University
(n/a)
Brief Project Summary:

The narrow genetic base of the U.S. cultivated soybean has been a concern to soybean growers and producers in terms of how the crop will respond to pest outbreaks that may overcome the genetic resistance commonly used in breeding cultivars. Concurrently to this concern is the fact that soybean cyst nematode (SCN) is one of the most destructive and yield- damaging pest to which soybean may be exposed. Cultivars with genetic resistance are the only feasible means to control the pest and protect soybean yield.

The overall goal of this continuing project is to widen the genetic base of soybean resistance to SCN by the discovery of new sources of resistance and their ingression into superior...

Unique Keywords:
#nematodes, #soybean breeding - disease resistance, #soybean cyst nematode - genetic resistance
Information And Results
Project Deliverables

Incorporation of newly-identified SCN-resistant genes into high-yield germplasm with genetic resistance to Phytophthora root rot, brown stem rot resistance and sudden death syndrome.

Final Project Results

IA1902 SCN a conventional cultivar was released. Funds for this work were provided by the current project, by ISA-Breeding for disease and pest resistance project, and by USB breeding for other sources of SCN resistance. IA1902 SCN has a resistance source the cultivar Peking, being this an important contribution to expand the genetic base of SCN resistance. Currently only 3-5% of the commercial cultivars trace are resistance to Peking.

Three advanced experimental lines have made available for breeding, and MTAs for their use have been signed (private seed companies).

Four new plant introductions identified by Dr. Arelli as possessing resistance to SCN and never used before in breeding are in use by Cianzio. Populations have been developed, and advanced experimental lines are under evaluation.

The United Soybean Research Retention policy will display final reports with the project once completed but working files will be purged after three years. And financial information after seven years. All pertinent information is in the final report or if you want more information, please contact the project lead at your state soybean organization or principal investigator listed on the project.