Newly Developed Conventional Soybean JTN-5110 Has Resistance to Multiple Pathogens.

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. 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 F_2:5 progenies were bioassayed in the greenhouse for nematode populations to identify resistant plants. Resistance was confirmed in marker assisted selection using SSR markers. JTN-5110 was entered in the USDA Uniform Soybean Tests: Southern States in 2010 and consistently resistant to SCN races 2, 3, and 5, as well as stem canker.  Showed resistance to FLS and SDS. JTN-5110 is a group V soybean, determinate 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. 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.