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United States Department of Agriculture

Agricultural Research Service

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Research Project: FISKEBY SOYBEANS – AN UNTAPPED SOURCE OF RESISTANCE GENES FOR MULTIPLE ENVIRONMENTAL STRESSES

Location: Plant Science Research

Project Number: 6645-11000-008-18
Project Type: Reimbursable

Start Date: May 01, 2013
End Date: Dec 31, 2013

Objective:
1. Develop and assess a genetic mapping population derived from Fiskeby soybean to identify molecular markers associated with genes for resistance to multiple environmental stress factors. 2. Apply these molecular makers in identification and development of stress resistant cultivars.

Approach:
Fiskeby soybean ancestors have been identified as sources of resistance to multiple stress factors including drought, iron deficiency chlorosis, salt, and ozone air pollution. A cross made between Fiskeby III and Mandarin-Ottawa (known to be sensitive to these stress factors) has been used to develop a mapping population of 240 random inbred lines (RILs). The RILs will be assayed for single nucleotide polymorphisms to identify DNA markers for mapping stress resistant genes. The RILs will be assessed for response to drought, iron deficiency chlorosis, salt tolerance, aluminum tolerance, and ozone tolerance. Injury scores and DNA marker results will be related through quantitative trait loci (QTL) analysis. Specific DNA markers associated with stress resistance genes from Fiskeby III will be used to identify modern cultivars derived from the Fiskeby pedigree that will be tested for stress tolerance. Fiskeby lines will be crossed with breeding lines for different soybean maturity groups and the DNA makers used to select progeny carrying Fiskeby stress resistant genes.

Last Modified: 4/16/2014
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