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

This Article Figures Only Full Text Free Full Text (PDF) Free Alert me when this article is cited Alert me if a correction is posted Services Related articles in Crop Science Similar articles in this journal Similar articles in ISI Web of Science Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via ISI Web of Science (2) Citing Articles via Google Scholar Google Scholar Articles by Ha, B.-K. Articles by Boerma, H. R. Search for Related Content PubMed Articles by Ha, B.-K. Articles by Boerma, H. R. Agricola Articles by Ha, B.-K. Articles by Boerma, H. R. Related Collections Crop Genetics Soybean

CROP BREEDING, GENETICS & CYTOLOGY

Pedigree Analysis of a Major QTL Conditioning Soybean Resistance to Southern Root-Knot Nematode

^a Dep. of Crop and Soil Sci., Univ. of Georgia, Center for Applied Genetic Technologies, 111 Riverbend Road, Athens, GA 30602
^b Dep. of Plant Pathology, Univ. of Georgia, 2106 Miller Plant Sciences Building, Athens, GA 30602

^* Corresponding author (rboerma{at}uga.edu).

The southern root-knot nematode [Meloidogyne incognita (Kofoid and White) Chitwood] (Mi) is a serious pest of soybean [Glycine max (L.) Merr.] in the southern USA. Many soybean cultivars with Mi resistance and high productivity have been developed in the USA during the past few decades. DNA markers have been used to identify a major quantitative trait locus (QTL) near the top of Linkage Group O (LG-O) conferring resistance to Mi. The objectives of this study were to determine the frequency of elite Mi-resistant cultivars that inherited the major Mi resistance QTL on LG-O and determine the ancestral source of the Mi-resistance allele at this QTL. Forty-eight soybean lines, including ancestral, Mi-susceptible, and Mi-resistant genotypes were analyzed at six simple sequence repeat (SSR) loci that flank the major Mi QTL on LG-O. Codescent analysis of markers and phenotypes across six cycles of breeding showed that Mi-resistant cultivars inherited a 200-bp band at Satt358 and a 238-bp band at Sat_132 from ‘Palmetto’. The tight linkage of both Satt358 and Sat_132 to the Mi QTL on LG-O indicates that selection for the Mi-resistant parent's allele at either of these markers should be highly effective in identifying Mi-resistant plants or lines.

Abbreviations: EDTA, ethylenediamine tetraacetic acid • LG-O, Linkage Group O • Mi, Meloidogyne incognita • PCR, polymerase chain reaction • QTL, quantitative trait locus/loci • SSR, simple sequence repeat

Related articles in Crop Science:

THIS ISSUE IN CROP SCIENCE

Crop Science 2004 44: 707-710. [Full Text]  

This article has been cited by other articles:

				G. R. Kruger, L. Xing, A. R. LeRoy, and A. Westphal Meloidogyne incognita Resistance in Soybean under Midwest Conditions Crop Sci., March 19, 2008; 48(2): 716 - 726. [Abstract] [Full Text] [PDF]

				B.-K. Ha, R. S. Hussey, and H. R. Boerma Development of SNP Assays for Marker-Assisted Selection of Two Southern Root-Knot Nematode Resistance QTL in Soybean Crop Sci., July 16, 2007; 47(S2): S-73 - S-82. [Abstract] [Full Text] [PDF]