Crop Science Journal of Natural Resources and Life Sciences Education
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

Published online 1 July 2008
Published in Crop Sci 48:1350-1354 (2008)
© 2008 Crop Science Society of America
677 S. Segoe Rd., Madison, WI 53711 USA
This Article
Right arrow Full Text
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Similar articles in this journal
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrow reprints & permissions
Google Scholar
Right arrow Articles by Calvo, E. S.
Right arrow Articles by Hiromoto, D. M.
PubMed
Right arrow Articles by Calvo, E. S.
Right arrow Articles by Hiromoto, D. M.
Agricola
Right arrow Articles by Calvo, E. S.
Right arrow Articles by Hiromoto, D. M.
Related Collections
Right arrow Crop Genetics
Right arrow Soybean

Two Major Recessive Soybean Genes Conferring Soybean Rust Resistance

Éberson S. Calvoa,*, Romeu A.S. Kiihla, Alexandre Garciaa, Arlindo Haradaa and Dario M. Hiromotob

a Tropical Melhoramento e Genética Ltda., Rodovia Celso Garcia Cid, Km 87, CEP 86183-600, Cambé, PR, Brazil
b Fundação de Apoio a Pesquisa Agropecuária do Estado de Mato Grosso–Fundação MT, Av. Antonio Teixeira dos Santos, 1559, CEP 78750-000, Rondonópolis, MT, Brazil

* Corresponding author (ebersoncalvo{at}tmg.agr.br).

Soybean rust (SBR) caused by Phakopsora pachyrhizi Syd. is currently the most threatening fungal disease of soybean [Glycine max (L.) Merr.] in the Americas. Development of resistant or tolerant cultivars is a major goal in several soybean breeding programs. Four loci, all carrying dominant alleles that confer a resistant phenotype, have been described. We investigated the genetic basis of the resistance in PI 200456 and PI 224270 by crossing each of them with a susceptible cultivar (CD 208). Phenotypic segregation ratios for F2 plants and F2:3 lines showed that the resistance in each resistant parent was controlled by a single recessive gene. A test for allelism demonstrated that these genes are non-allelic. This is the first report of recessive genes controlling SBR resistance in soybean and may represent a different type of resistance for breeding programs aimed at development of more durable resistance.

We would like to thank Marcelo Soares Baço for his technical assistance in the greenhouse screenings. This project has received the financial support from Fundação de Amparo à Pesquisa do Estado de Mato Grosso–FAPEMAT and from Financiadora de Estudos e Projetos–FINEP/MCT (Ação Estruturante Transversal).

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 February 25, 2008.




HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
The SCI Journals Agronomy Journal Vadose Zone Journal
Journal of Natural Resources
and Life Sciences Education		 Soil Science Society of America Journal
Journal of Plant Registrations Journal of
Environmental Quality		 The Plant Genome
Copyright © 2008 by the Crop Science Society of America.