HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Figures Only Full Text Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via Google Scholar Google Scholar Articles by Scaboo, A.M. Articles by Sams, C.E. Search for Related Content PubMed Articles by Scaboo, A.M. Articles by Sams, C.E. Agricola Articles by Scaboo, A.M. Articles by Sams, C.E. Related Collections Soybean Crop Genetics

CROP BREEDING & GENETICS

Confirmation of Molecular Markers and Agronomic Traits Associated with Seed Phytate Content in Two Soybean RIL Populations

¹ Dep. of Crop, Soil, and Environmental Sciences, Univ. of Arkansas, 115 Plant Science Bldg., Fayetteville, AR 72701
² Dep. of Plant Sciences, Univ. of Tennessee, 2431 Joe Johnson Dr., 252 Ellington Plant Science Bldg., Knoxville, TN 37996
³ Dep. of Biosystems Engineering and Soil Science, Univ. of Tennessee, 2506 E J Chapman Dr., Knoxville, TN 37996
⁴ USDA-ARS Soybean/Maize Germplasm, Pathology, and Genetics Research Unit, Urbana, IL 61801
⁵ Dep. of Crop and Soil Sciences, Univ. of Georgia, Center for Applied Genetic Technologies, 111 Riverbend Rd., Athens, GA 30602

^* Corresponding author (ascaboo{at}uark.edu).

The concentration of phytate is an important consideration when analyzing feed grain for livestock. Simple sequence repeat markers Satt237 and Satt561 were found to be linked to quantitative trait loci (QTLs) for phytate concentration in soybean [Glycine max (L.) Merr.] seed. Previous research also established a significant correlation between seed inorganic phosphorus (Pi) and seed phytate. The objectives of this study were to confirm these QTL in independent environments and populations, to compare the effectiveness of marker-assisted selection with that of phenotypic selection for low phytate, and to evaluate agronomic traits associated with low phytate soybean. The low phytate soybean mutant CX1834-1-2 was crossed with the cultivar 5601T and line S97-1688 to form two populations. The Satt237 marker was linked to a major QTL (R² > 0.10) governing seed phytate, and Satt561 was linked to a minor QTL (R² < 0.10) in both populations. These two confirmed QTL have been named cqPha-001 and cqPha-002. The phenotypic correlations were significant (P < 0.05) for plant height (r = 0.26), seed protein (r = –0.19), and seed oil (r = 0.17). Phenotypic selection was found to be more effective in lowering mean phytate levels and more cost efficient.

Abbreviations: ETREC, East Tennessee Research and Education Center • LG, linkage group • MAS, marker-assisted selection • MG, maturity group • PCR, polymerase chain reaction • Pi, inorganic phosphorus • QTL, quantitative trait locus • RIL, recombinant inbred lines • SSR, simple sequence repeat

This article has been cited by other articles:

				J. D. Gillman, V. R. Pantalone, and K. Bilyeu The Low Phytic Acid Phenotype in Soybean Line CX1834 Is Due to Mutations in Two Homologs of the Maize Low Phytic Acid Gene The Plant Genome, July 1, 2009; 2(2): 179 - 190. [Abstract] [Full Text] [PDF]