Seed Inorganic Phosphorus Stability and Agronomic Performance of Two Low‐Phytate Soybean Lines Evaluated across Six Southeastern US Environments

• DOI: 10.2135/cropsci2017.02.0107
• Publication Date: 2017-06-30T14:15:34Z
• Authors: Jeffrey D. Boehm; Forbes R. Walker; Hem S. Bhandari; Dean Kopsell; Vincent R. Pantalone
• Keywords: Monogastric

Nondigestible phytate salts that chelate nutritional minerals in the digestive tract of monogastric animals are an unwanted component soymeal [ Glycine max (L.) Merr.] and a documented source nonpoint phosphorus (P) pollution waste stream detrimental to environment. Lowering soybean levels would ease environmental concerns improve mineral bioavailability. In 2013, field trial consisting two University Tennessee low‐phytate (LP) lines (56CX‐1273 56CX‐1283) high‐yielding check cultivars (‘5002T’ ‘Osage’) were planted four row plots replications at six Southeastern locations randomized complete block design evaluate LP for agronomic performance, seed quality traits inorganic P (Pi) stability. Results revealed there no significant differences ( > 0.05) mean yield or emergence (germination) between cultivars. Although genotype × index linear regression Pi slope was significantly different < 0.001) from zero, therefore not stable across environments, concentrations 56CX‐1273 (2084.7 μg g −1 ) 56CX‐1283 (1744.4 still about order magnitude greater than means Osage (185.7 5002T (228.0 ). This study documents line can produce yields statistically equivalent with germination issues.