Submitted to: ASA-CSSA-SSSA Annual Meeting Abstracts
Publication Type: Abstract Only
Publication Acceptance Date: 10/14/2014
Publication Date: 10/14/2014
Citation: Arelli, P.R., Young, L.D., Mengistu, A., Gillen, A.M., Fritz, L.A. 2014. Newly developed conventional soybean JTN-5110 has resistance to multiple pathogens. ASA-CSSA-SSSA Annual Meeting Abstracts. Page 99.
Technical Abstract: In the United States, combined yield losses in soybean [Glycine max (L.) Merr.] caused by soybean cyst nematode (SCN; Heterodera glycines Ichinohe) and fungal diseases: stem canker (Diaporthe phaseolorum var. meridionalis), Sudden Death Syndrome (SDS; caused by Fusarium solani f. sp. glycines), and Frogeye leaf spot (FLS; Cercospora sojina), are estimated to be nearly $1 billion. Resistant cultivars have stabilized the losses for SCN; however, over time, variable nematode populations have adapted to deployed resistance alleles. High yielding soybean cultivars with combined resistance to SCN, stem canker, and FLS are not available. We developed a soybean line, JTN-5110, with resistance to multiple pathogens with excellent yield potential. Progenies of the cross (J98-32 X Anand) were advanced using bulk row method. Selected lines from F2:5 progenies were bioassayed in the greenhouse for nematode populations using established methods to identify resistant plants. Resistance was confirmed in marker assisted selection using SSR markers specific to nematode resistance. JTN-5110 was first submitted for testing in the USDA Uniform Soybean Tests: – Southern States in 2010 and has shown consistent resistant reactions to SCN races 2, 3, and 5, as well as stem canker. Screening conducted in Milan, TN from 2010-2012 and according to established protocols, also shows resistance to FLS. JTN-5110 is a group V soybean, determinate in growth habit with purple flowers, tawny pubescence, and black hilum. In the 2013 Soybean Performance Tests in Tennessee, JTN-5110 was the highest yielding (4304 +/- 135 kg ha-1) soybean in the group V conventional test. Over three years (2011-2013), it averaged 3699 kg ha-1. Ratings taken in 2013 also indicate resistance to SDS. In the USDA Uniform Soybean Tests: Southern States, the yield was 3900 kg ha-1 for 2013, with a three year (2011-2013) average of 3679 kg ha-1. With renewed interest in high yielding conventional soybeans having resistance to multiple pathogens, growers can be highly benefitted by its adoption. JTN-5110 is also an excellent parent material in crosses to develop more desirable cultivars.