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ARS Home » Southeast Area » Stoneville, Mississippi » Crop Genetics Research » Research » Publications at this Location » Publication #138636
Title: MOLECULAR MAPPING OF RESISTANCE TO SOYBEAN CYST NEMATODE RACES 2,3 AND 5 IN SOYBEAN LINE PI90763

Author
item GUO, B - UNIV OF MO
item SLEPER, D - UNIV OF MO
item SHANNON, J - UNIV OF MO
item Arelli, Prakash

Submitted to: ASA-CSSA-SSSA Proceedings
Publication Type: Abstract Only
Publication Acceptance Date: 11/10/2002
Publication Date: 11/10/2002
Citation: Guo, B., Sleper, D.A., Shannon, J.G., Arelli, P.R. 2002. Molecular mapping of resistance to soybean cyst nematode races 2,3 and 5 in soybean line pi90763. Crop Science. P. 234

Interpretive Summary:

Technical Abstract: Soybean cyst nematode (SCN) is a major soybean disease in the USA. It causes a 2 to 6% annual yield loss. Use of resistant cultivars has been proven to be the most effective way to control SCN damage. Soybean line PI90763 is resistant to SCN races 1,2,3,5 and 6. It is an important resistance source in soybean breeding and is one of the four differentials in race determination test. It has been mapped for resistance to SCN races 1,3 and 6. However, no information is available for resistance to SCN races 2 and 5. SCN races 2 and 5 are the predominant SCN races in the USA at this time. Objective of our research is to identify QTLs for resistance to SCN races 2 and 5 in PI90763. The purpose of using race 3 is to compare with previous research. About 120 SSR molecular markers were used which covered all the 20 linkage groups with 5-7 SSR markers for most of the linkage groups.