Molecular Marker Assisted Backcross Development and Evaluation of an Environmentally Friendly, Commercially Acceptable Low Seed Phytate Soybean

TL;DRAbstract

Soybean [Glycine max (L). Merrill] is the world’s top oilseed crop. High protein soymeal is a primary soybean use and staple food of livestock and fish. The storage form of phosphorus (P) in the seed is phytic acid, or phytate [myo-inositol 1,2,3,4,5,6 hexakisphosphate] which binds and chelates key nutritional cations forming stable salts that are non-digestible. Livestock waste laden with phytate P is an environmental concern, and a source of nonpoint P pollution causing eutrophication and surface water quality deterioration. The primary objective of this research was the development of a commercially acceptable low phytate (LP) soybean line which would enhance nutritional qualities of soymeal and sustainably lessen P pollution. The LP soybean lines evaluated in this study were twelve BC5 [5th generation backcross] derived lines from their recurrent parent ‘5601T’, a high yielding University of Tennessee developed cultivar. The presence of the two LP loci in all twelve BC5 derived lin

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