Registration of ‘S14‐15138GT’ soybean as a high‐yielding RR1/STS cultivar with broad disease resistance and adaptation

Abstract

Abstract‘S14‐15138GT’ (Reg. no. CV‐537, PI 693754) is a late maturity group IV (relative maturity 4.8) indeterminate high‐yielding soybean [Glycine max (L) Merr.] cultivar with glyphosate and sulfonylurea tolerance developed and released in 2017 by the University of Missouri–Fisher Delta Research Center soybean breeding program. S14‐15138GT is an F4 plant selection from the cross ‘S09‐10871’ × ‘S08‐9727RR1’. S14‐15138GT was tested in 83 environments across 11 states and showed high yield potential and wide adaptation in Missouri and other southern states. In the University of Missouri yield trials, S14‐15138GT yielded, on average, 110% of the tests mean across 19 locations in 4 yr (2015–2018). Plants of S14‐15138GT are 84 cm tall and have white flower color, tawny pubescence, and tan pod walls. On average, S14‐15138GT seed contains 406 g kg−1 protein and 221 g kg−1 oil on a dry seed weight basis. S14‐15138GT has a broad disease resistance package including resistance to soybean cyst nematode races 3 and 14 (HG Type 5.7 and Type 1.3.6.7), stem canker, frogeye leaf spot, sudden death syndrome, and phomopsis seed decay. In addition to its high yield potential, strong disease resistance package, and broad adaptation, S14‐15138GT is a suitable alternative for farmers who want to grow and save seed of glyphosate‐tolerant soybean cultivars.