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

This Article Full Text Free Full Text (PDF) Free Alert me when this article is cited Alert me if a correction is posted Services 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 (4) Citing Articles via Google Scholar Google Scholar Articles by Harris, D. K. Articles by Finnerty, S. L. Search for Related Content PubMed Articles by Harris, D. K. Articles by Finnerty, S. L. Agricola Articles by Harris, D. K. Articles by Finnerty, S. L. Related Collections Soybean Plant Disease Plant Genetic Resources

PLANT GENETIC RESOURCES

Additional Sources of Soybean Germplasm Resistant to Two Species of Root-Knot Nematode

^a Pioneer Hi-Bred International, Crop Genetics Res. and Development, 19456 St. Hwy 22, Mankato, MN 56001
^b Dep. of Crop and Soil Sci., Center for Applied Genetic Technologies, 111 Riverbend Road, Athens, GA 30602
^c Dep. of Plant Pathology, Univ. of Georgia, Athens, GA 30602

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

Root-knot nematodes (Meloidogyne spp.) can significantly reduce seed yield in soybean [Glycine max (L.) Merr.]. Identification of soybean germplasm with unique genes for resistance to root-knot nematodes would allow development of cultivars with high levels of resistance. The objective of this study was to identify additional sources of resistance to root-knot nematodes. We evaluated 608 recently imported soybean PIs from the southern provinces of the People's Republic of China for resistance to M. incognita (MI) and M. arenaria (MA). After three sequential levels of greenhouse screening, seven resistant PIs were identified for MI and seven for MA. In a fourth screening level to determine their level of resistance, PI 594753A and PI 594775A had MI gall resistance equal to the highly resistant check PI 96354. Three other PIs had more galls than PI 96354, but produced fewer galls than ‘Haskell’, the resistant check. However, the numbers of MI eggs produced on PI 594753A and PI 594775A were equal to the highly susceptible ‘Bossier’. The MA screening identified PI 594427C and PI 594403 with the same number of galls as the resistant check Haskell, but they had more galls than the highly resistant PI 200538. The number of MA eggs produced by PI 594427C was equal to the highly resistant check PI 200538, and PI 594403 produced fewer eggs per plant than PI 200538. These new sources of MA resistance may possess previously unidentified genes.

Abbreviations: MA, Meloidogyne arenaria • MI, Meloidogyne incognita • PI, plant introduction • QTLs, quantitative trait loci

This article has been cited by other articles:

				P. A. Roberts, W. C. Matthews, J. D. Ehlers, and D. Helms Genetic Determinants of Differential Resistance to Root-Knot Nematode Reproduction and Galling in Lima Bean Crop Sci., March 19, 2008; 48(2): 553 - 561. [Abstract] [Full Text] [PDF]

				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]