Evaluating Genotypes and Seed Treatments to Increase Field Emergence of Low Phytic Acid Soybeans

Benjamin J. Averitt, Gregory E. Welbaum, Xiaoying Li, Elizabeth Prenger, Jun Qin and Bo Zhang
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Benjamin J. Averitt: Department of Crop and Soil Sciences, University of Georgia, Athens, GA 30602, USA
Gregory E. Welbaum: School of Plant and Environmental Sciences, Virginia Tech, Blacksburg, VA 24060, USA
Xiaoying Li: School of Plant and Environmental Sciences, Virginia Tech, Blacksburg, VA 24060, USA
Elizabeth Prenger: Department of Plant Science, University of Missouri, Columbia, MO 65211, USA
Jun Qin: Hebei Academy of Agricultural and Forestry Sciences, Shijiazhuang 050051, China
Bo Zhang: School of Plant and Environmental Sciences, Virginia Tech, Blacksburg, VA 24060, USA

Agriculture, 2020, vol. 10, issue 11, 1-17

Abstract: Low phytic acid (LPA) soybean [ Glycine max (L.) Merr] genotypes reduce indigestible PA in soybean seeds in order to improve feeding efficiency of mono- and agastric animals, but often exhibit low field emergence, resulting in reduced yield. In this study, four LPA soybean varieties with two different genetic backgrounds were studied to assess their emergence and yield characters under 12 seed treatment combinations including two broad-spectrum, preplant fungicides (i.e., ApronMaxx (mefenoxam: (R,S)-2-[(2,6-dimethylphenyl)-methoxyacetylamino]-propionic acid methyl ester; fludioxonil: 4-(2,2-difluoro-1,3-benzodioxol-4-yl)-1H-pyrrole-3-carbonitrile) and Rancona Summit (ipconazole: 2-[(4-chlorophenyl)methyl]-5-(1-methylethyl)-1-(1H-1,2,4-triazol-1-ylmethyl) cyclopentanol; metalaxyl: N-(methooxyacetyl)-N-(2,6-xylyl)-DL-alaninate)), osmotic priming, and MicroCel-E coating. Two normal-PA (NPA) varieties served as controls. Both irrigated and non-irrigated plots were planted in Blacksburg and Orange, Virginia, USA in 2014 and 2015. Results revealed that three seed treatments (fungicides Rancona Summit and ApronMaxx, as well as Priming + Rancona) significantly improved field emergence by 6.4–11.6% across all genotypes, compared with untreated seeds. Seed priming was negatively associated with emergence across LPA genotypes. Seed treatments did not increase the yield of any genotype. LPA genotypes containing mips or lpa1 / lpa2 mutations, produced satisfactory emergence similar to NPA under certain soil and environmental conditions due to the interaction of genotype and environment. Effective seed treatments applied to LPA soybeans along with the successful development of LPA germplasm by soybean breeding programs, will increase use of LPA varieties by commercial soybean growers, ultimately improving animal nutrition while easing environmental impact.

Keywords: field emergence; low phytic acid; seed treatment; soybean (search for similar items in EconPapers)
JEL-codes: Q1 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 (search for similar items in EconPapers)
Date: 2020
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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