| HOME | HELP | FEEDBACK | SUBSCRIPTIONS | ARCHIVE | SEARCH | TABLE OF CONTENTS |
|
|
|
|||||||
|
|||||||||
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
a University of Missouri-Delta Center, P.O. Box 160, Portageville, MO 63873
b Division of Plant Sciences, 271-F Christopher S. Bond Life Sciences Center, University of Missouri, Columbia, MO 65211
c University of Arkansas, 2601 N. Young, Nematology Lab., Fayetteville, AR 72704
* Corresponding author (shannong{at}missouri.edu).
‘Jake’ soybean [Glycine max (L.) Merr.], Reg. No. CV-486, PI 643912 (NSSL 446744.01), was developed by the Missouri Agricultural Experiment Station at the University of Missouri-Delta Center, Portageville, MO, and released 3 Feb. 2006. It was released because of its high yield potential, broad resistance to soybean cyst nematode (SCN, Heterodera glycines Ichinohe) populations; resistance to southern root knot nematode [Meloidogyne incognita (Kofoid & White) Chitwood], and resistance to reniform nematode [Rotylenchulus reniformis (Linford and Oliveira)]. The name Jake is in honor of Jake Fisher, a 46 year University of Missouri employee and current superintendent of the University of Missouri-Delta Center at Portageville, MO.
Jake, tested as S00-9970-09, is mid-group V (RM 5.5) maturity. It is an F5 single plant selection composited in the F6 generation from the cross S94-1867 x ‘Anand’ (Anand et al., 2001) made in 1997. S94-1867 is a line with broad resistance to SCN populations derived from PI 437654 via Hartwig and is from ‘Pioneer 9592’ x S91-1693. Pioneer P9592 is derived from ‘Pioneer 9561’ x (Asgrow ‘A5618’ x Pioneer 9561). Pioneer 9561 is from ‘Forrest’ (Hartwig and Epps, 1973) x ‘Mack’ (Caviness et al., 1972). Asgrow 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 F2 to F4 generations were advanced alternately in the SCN nursery at the University of Missouri-Rhodes Farm near Clarkton, Missouri and in Puerto Rico, respectively by the bulk pod method. The bulk pod method we used involved harvesting a single three-seeded pod from each of up to 500 plants in each generation and then bulked seed from harvested pods 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 in the SCN nursery at Clarkton during the summer of 2000. The F6 row, S00-9970-09, was uniform for agronomic traits, bulked and entered into the University of Missouri-Delta Center yield tests from 2001 to 2005. It was also tested in the Southern Regional Uniform Preliminary Group V test in 2003 (Paris and Bell, 2004) and Uniform Group V test in 2004 and 2005 (Paris and Bell, 2005; Paris and Shelton, 2006). In addition, it was tested in Agricultural Experiment Station trials in Arkansas and Tennessee in 2004–2005 and in Missouri in 2005. In five years of research tests over 25 environments in Missouri, yield of Jake has equaled Anand on loam soils but has averaged about 467 kg ha–1 more on clay and sand. It also has been superior in yield to Anand in Missouri, Arkansas, and Tennessee state variety trials (Wiebold et al., 2005; Dombek et al., 2004, 2005; Allen et al., 2004, 2005).
In comparison to 5601T (Pantalone et al., 2003) in the Uniform Tests–Southern States across three years and 44 locations (Paris and Bell, 2004, 2005; Paris and Shelton, 2006), Jake averaged 1% more in seed yield (5601T yielded 3687 kg ha–1); 1 d earlier (5601T matured 7 October); the same lodging score (5601T was 1.8 based on a score of 1 to 5 with 1 being erect and 5.0 lodged flat); 3 cm shorter (5601T was 82 cm), and 0.8 g 100 seeds–1 larger seed (5601T was 13.4 g 100 seeds–1).
Plants of Jake have a determinate growth habit with purple flowers, tawny pubescence, and tan pods at maturity. Seed are shiny yellow with black hila. Seed protein and oil content on a dry weight basis have averaged 408 and 194 g kg–1 seed, respectively, versus 417 and 192 g kg–1 seed for 5601T. It has shown a similar reaction to SCN HG types (races) as Anand. Jake has shown moderate resistance to SCN HG type 2.5.7 (Race 1), HG type 1.2- (Race 2), HG type 0- (Race 3) and HG type 2- (Race 5) and HG type 1.3.- (Race 14) in greenhouse tests at Columbia, MO, and Portageville, MO, in 2003 and 2005. Average SCN female indexes on Jake for each HG type above were 21, 2, 26, 1, and 2, respectively, on the basis of a SCN female index of 100 for the susceptible check (Niblack et al., 2002). In the same tests female indices for Anand for each HG type averaged 19, 3, 13, 1, and 3, respectively. Jake has shown moderate resistance to root knot nematode in 4 years of testing (2002–2005) in plantings after potatoes near Bertrand, MO, and has shown resistance to reniform nematode in tests at the University of Arkansas (R. T. Robbins, personal communication, 2004). It is moderately resistant to stem canker [caused by Diaporthe phaseolorum (Cooke and Ellis) Sacc. var. meridionales F. A. Fernandez] and sudden death syndrome [caused by Fusarium solani (Mort.) Sacc. f. sp. glycines Roy]. It is susceptible to phytophthora root rot (caused by Phythphthora sojae M. J. Kaufmann & J. W. Gerdemann).
Foundation Jake seed was distributed to Missouri growers in 2006. A royalty of one cent per pound will be collected on certified seed sold. Royalties collected outside the state of Missouri by participating states will be shared 70/30 between Missouri and the participating state, respectively. The University of Missouri has applied for Plant Variety Protection for Jake. No seed will be distributed without written permission for 20 years from the date of publication in Crop Science by the University of Missouri, at which time seeds will also be available from the National Plant Germplasm System (NPGS). Small quantities of seeds for research purposes and biparental crossing may be obtained from the corresponding author for at least five years.
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 May 25, 2006.
References
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| HOME | HELP | FEEDBACK | SUBSCRIPTIONS | ARCHIVE | SEARCH | TABLE OF CONTENTS |
