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 Google Scholar Articles by Komatsu, K. Articles by Nakazawa, Y. PubMed Articles by Komatsu, K. Articles by Nakazawa, Y. Agricola Articles by Komatsu, K. Articles by Nakazawa, Y. Related Collections Marker-assisted selection Soybean Insect Resistance

Antibiosis Resistance of QTL Introgressive Soybean Lines to Common Cutworm (Spodoptera litura Fabricius)

National Agricultural Research Center for Kyushu Okinawa Region, 2421 Suya, Koushi, Kumamoto 861-1192, Japan

^* Corresponding author (kkomatsu{at}affrc.go.jp).

To develop soybean [Glycine max (L.) Merr.] cultivars resistant to common cutworm (CCW; Spodoptera litura Fabricius), it is important to clarify the effects and genetic characteristics of quantitative trait loci (QTLs) for resistance. In a prior study, we detected two QTLs, named CCW-1 and CCW-2, for resistance to CCW in a resistant germplasm, ‘Himeshirazu’. Other researchers detected a major QTL for herbivorous insect resistance in PI 229358. Here we constructed near isogenic lines (NILs) of the QTLs via recurrent backcrossing and evaluated the effect of each QTL on antibiosis resistance to CCW. To confirm allelism between CCW-1 and the PI 229358-derived QTL, we did a crossing test. The NILs exhibited significant resistance to CCW compared with the susceptible parent, although the resistance varied between years. The effects of CCW-1 and CCW-2 were similar, and no allelic interaction between them was detected. The crossing test confirmed that CCW-1 and the PI 229358-derived QTL were identical. But the alleles could be different, because the NILs derived from Himeshirazu and PI 229358 showed different levels of resistance.

Abbreviations: CCW, common cutworm • cM, centimorgan • LG, linkage group • MAS, marker-assisted selection • NIL, near isogenic line • QTL, quantitative trait locus • SII, standardized insect-growth index • SSR, simple sequence repeat

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 December 7, 2006.