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a Univ. of Missouri-Delta Center, P.O. Box 160, Portageville, MO 63873
b Univ. of Missouri, 271-F Christopher S. Bond Life Sciences Center, Columbia, MO 65211
* Corresponding author (shannong{at}missouri.edu).
Soybean [Glycine max (L.) Merr.] germplasm line S00-9980-22 (Reg. No. GP-330, PI 643913) was developed by the University of Missouri Agricultural Experiment Station, Division of Plant Sciences-Delta Center, Portageville, MO, and released in May 2006. It has value as a parent in soybean improvement programs because of its high yield potential, higher seed protein content and resistance to root knot nematode [Meloidogyne incognita (Kofoid and White) Chitwood].
S00-9980-22 is an F5 single plant selection composited in the F6 generation from the cross of TN94-213 x S94-1867. TN94-213 is from S85-1009 x ‘Hutcheson’ (Buss et al., 1988). S85-1009 is from ‘Bedford’ (Hartwig and Epps, 1978) x ‘Essex’ (Smith and Camper, 1973). S94-1867 is from Pioneer variety 9592 x S91-1693. Pioneer variety 9592 is derived from P9561 x (A5618 x Pioneer variety 9561). Pioneer variety 9561 is from ‘Forrest’ (Hartwig and Epps, 1973) x ‘Mack’ (Caviness et al., 1972). A5618 is from ‘Williams’ (Bernard and Lindahl, 1972) x ‘York’ (Smith, 1968). S91-1693 is from ‘Hartwig’ (Anand, 1992) x Coker 485. Coker 485 is from ‘Centennial’ (Hartwig and Epps, 1977) x [(‘Hampton 266’ x ‘Bragg’) x ‘Hutton’] (Hinson and Hartwig, 1964; Hinson, 1973). Hampton 266 is a selection from ‘Coker Hampton’ (Webb and Hicks, 1965). The F1 generation was grown in Puerto Rico. The F2 to F4 generations were advanced alternately in the soybean cyst nematode (Heterodera glycines Ichinohe) nursery at the University of Missouri–Rhodes Farm near Clarkton, MO, and in Puerto Rico by the bulk pod method in which a single three-seeded pod was harvested from each of up to 500 plants in each generation. Then, the bulked seeds were planted to advance the next generation. The F5 generation was grown in Costa Rica during the winter and spring of 2000 and 100 single plants were harvested, threshed individually, and planted in F6 progeny rows at Clarkton, MO, during the summer of 2000. The F6 row, S00-9980-22, which was uniform for agronomic traits, was bulked and entered into the University of Missouri-Delta Center yield tests from 2001 to 2005 and in the Regional Group V Quality Traits test from 2003 to 2005 (Graef, 2005).
S00-9980-22 is late-group V maturity (relative maturity 5.9). Plants of S00-9980-22 have a determinate growth habit, purple flowers, tawny pubescence, tan pods, and shiny yellow seed with brown hila. In comparison to ‘5601T’ (Pantalone et al., 2003) in the regional quality traits test over 3 yr and 24 locations (Graef, 2005), S00-9980-22 averaged 3% more seed yield (5601T averaged 3454 kg ha–1), 3 d later maturity (5601T matured 12 October), 5 cm shorter height (5601T was 87 cm tall), and had a similar lodging score (5601T had a score of 1.8, where 1.0 is all plants erect and 5.0 is all plants lodged flat). Seeds of S00-9980-22 averaged 0.5 g 100 seed–1 larger, 11 g kg–1 higher protein, and with similar oil content on a 13% moisture basis than seeds of USG 5601T, which averaged 13.4 g 100 seed–1, 377 g kg–1 protein, and 180 g kg–1 oil. S00-9980-22 has shown resistance to common root knot nematode in Missouri screening trials after potatoes (Solanum tuberosum L.) from 2003 to 2006 at two sites each year near Bertrand, MO. Over 3 yr it had an average score of 1.8 for root galling compared with 4.2 for ‘Anand’ (Anand et al., 2001) where a score of 1 = no galls or highly resistant and 5.0 is severe galling or very susceptible. It is also resistant to bacterial pustule [caused by Xanthomonas axonopodis pv. glycines (Nakano) Vauterin et al.]. It is susceptible to soybean cyst nematode, phytophthora root rot (caused by Phytophthora sojae M.J. Kaufmann and J.W. Gerdemann), and stem canker [caused by Diaporthe phaseolorum (Cooke and Ellis) Sacc. var. meridionalis F.A. Fernandez].
Seeds of S00-9980-22 were deposited in the USDA Soybean Germplasm Collection. Packets of 100 seed may be requested from J.G. Shannon, University of Missouri-Delta Center, P.O. Box 160, Portageville, MO 63873, shannong{at}missouri.edu for up to 5 yr for research purposes, including the development and commercialization of new cultivars. We ask that the appropriate recognition be made if this germplasm contributes to the development of a new breeding line or cultivar.
Acknowledgments
The authors thank the United Soybean Board for financial support in the development of this germplasm line through funding from USB Project 5220 "Development of High Protein Meal with Low Phytate, Enhanced Functionality, and Feeding Efficiency."
Footnotes
All rights reserved. No part of this periodical may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying, recording, or any information storage and retrieval system, without permission in writing from the publisher. Permission for printing and for reprinting the material contained herein has been obtained by the publisher.
Received for publication July 10, 2007.
References
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