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Environmental Effects on Soybean with Modified Phosphorus and Sugar Composition
Author(s) -
Maupin Laura M.,
Rosso M. Luciana,
Rainey Katy M.
Publication year - 2011
Publication title -
crop science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.76
H-Index - 147
eISSN - 1435-0653
pISSN - 0011-183X
DOI - 10.2135/cropsci2010.07.0396
Subject(s) - germplasm , biology , sugar , phosphorus , composition (language) , sugar phosphates , population , phosphate , food science , glycine , mutant , inbred strain , genotype , soybean meal , mutation breeding , agronomy , microbiology and biotechnology , botany , biochemistry , gene , ecology , chemistry , amino acid , raw material , linguistics , philosophy , demography , organic chemistry , sociology
Development of soybeans [ Glycine max (L.) Merr.] with modified phosphorus (P) and sugar composition adds value to soybean meal. The identification and release of the soybean line V99‐5089 with a mutation in the D‐ myo ‐inositol 3‐phosphate synthase 1 gene ( MIPS1 ) provides a germplasm source that dually enhances both P and sugar composition of soybeans. An evaluation of the recombinant inbred line population from the cross of V99‐5089 × Essex was completed at three environments in 2 yr. Phenotypic selection for modified composition was slightly more effective than marker‐assisted selection with the Satt453 marker, which was 87% efficient. In the mutant lines, a significant genotype × environment interaction was shown for inorganic phosphorus (Pi) concentration but not sugar concentration. Correlations for improving P and sugar composition were favorable, and with the exception of emergence there were no strong correlations with agronomic traits. The correlation of emergence with Pi was significant ( r = −0.59), indicating reduced emergence due to the mutation. Reduced emergence is a problem in low phytate germplasm generally and further research is necessary to genetically improve emergence of low phytate lines.