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

This Article 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 Spear, J. D. Articles by Fehr, W. R. Search for Related Content PubMed Articles by Spear, J. D. Articles by Fehr, W. R. Agricola Articles by Spear, J. D. Articles by Fehr, W. R. Related Collections Soybean Crop Growth and Development

CROP BREEDING & GENETICS

Genetic Improvement of Seedling Emergence of Soybean Lines with Low Phytate

Dep. of Agronomy, Iowa State Univ., Ames, IA 50011. This journal paper of the Iowa Agric. and Home Econ. Exp. Stn., Ames, IA, Project No. 3732 was supported by the Hatch Act, State of Iowa, Iowa Soybean Promotion Board, Raymond F. Baker Center for Plant Breeding, and the United Soybean Board

^* Corresponding author (wfehr{at}iastate.edu).

Seedling emergence of low-phytate (LP) soybean [Glycine max (L.) Merr.] lines has been reported to be lower than that of normal-phytate (NP) lines. One objective of this study was to evaluate if backcrossing the LP trait into a NP line would result in LP progeny with normal emergence. The LP line CX1834-1-6 (CX1834) was crossed to B01769B019 (B019), a NP line with reduced palmitate content, and three backcrosses were made to B019. A total of 36 BC₃F₄–derived LP lines from the population were evaluated at five locations in 2005 in comparison with CX1834, B019, and an NP cultivar IA3023. The mean phytate P and inorganic P content of all the backcross lines was not significantly different from CX1834. There were 18 backcross lines that had a mean field emergence that was significantly greater than CX1834 and not significantly different from B019. The results indicated that backcrossing seemed to be successful for developing LP lines with normal field emergence. A second objective of the study was to determine the effectiveness of warm germination, cold vigor, and accelerated aging tests for predicting field emergence of LP lines. Fifteen of the backcross lines were evaluated in the three tests that represented the range of field emergence that had been observed. The tests were useful for identifying lines with inferior field emergence but were not reliable enough to replace field tests for identifying the best emerging lines.

Abbreviations: B019, B01769B019 • CX1834, CX1834-1-6 • CZE, capillary zone electrophoresis • LP, low phytate • NP, normal phytate

This article has been cited by other articles:

				Y. Gao, R.M. Biyashev, M.A. S. Maroof, N.M. Glover, D.M. Tucker, and G.R. Buss Validation of Low-Phytate QTLs and Evaluation of Seedling Emergence of Low-Phytate Soybeans Crop Sci., July 1, 2008; 48(4): 1355 - 1364. [Abstract] [Full Text] [PDF]

				B. P. Anderson and W. R. Fehr Seed Source Affects Field Emergence of Low-Phytate Soybean Lines Crop Sci., May 1, 2008; 48(3): 929 - 932. [Abstract] [Full Text] [PDF]

				K. D. Bilyeu, P. Zeng, P. Coello, Z. J. Zhang, H. B. Krishnan, A. Bailey, P. R. Beuselinck, and J. C. Polacco Quantitative Conversion of Phytate to Inorganic Phosphorus in Soybean Seeds Expressing a Bacterial Phytase Plant Physiology, February 1, 2008; 146(2): 468 - 477. [Abstract] [Full Text] [PDF]