New sources of resistance to Radopholus similis in Musa germplasm from Asia

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Contents Vol 35(5)

doi:10.1071/AP06051

New sources of resistance to Radopholus similis in Musa germplasm from Asia

C. Dochez ^A, J. Dusabe ^A, J. Whyte ^B, A. Tenkouano ^C, R. Ortiz ^D, D. De Waele ^E ^F

^A IITA-Uganda, PO Box 7878, Kampala, Uganda.
^B IITA-Malawi, Chitedze Research Station, PO Box 30258, Lilongwe 3, Malawi.
^C IITA-Cameroon, BP 2008, Messa, Yaoundé, Cameroon.
^D CIMMYT, Apdo Postal 6-641, 06600 Mexico, D.F. Mexico.
^E Laboratory of Tropical Crop Improvement, Department of Biosystems, Catholic University Leuven (K.U.Leuven), Kasteelpark Arenberg 13, 3001 Leuven, Belgium.
^F Corresponding author. Email: dirk.dewaele@biw.kuleuven.be





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Australasian Plant Pathology 35(5) 481–485 http://dx.doi.org/10.1071/AP06051
Submitted: 27 November 2005 Accepted: 24 May 2006 Published online: 4 September 2006

Abstract

The burrowing nematode, Radopholus similis, is a serious threat to sustainable banana production worldwide. A promising method for nematode control is the development and deployment of nematode-resistant banana cultivars. This requires the identification of sources of resistance, which can then be included in breeding programs to improve the local banana cultivars. In this regard, 23 accessions, including wild bananas and landraces, were evaluated for resistance to R. similis using the individual root inoculation method. The accessions Marau, Pora Pora, Kokopo, Pisang Mas, Saba, Gia Hiu, M. acuminata ssp. burmannica, M. acuminata ssp. malaccensis and Vudu papua were resistant to R. similis. Four other accessions, Pitu, Yalim, M. balbisiana and Yanun yefan, showed partial resistance to R. similis.

Keywords: host response, reproduction ratio, screening, susceptibility.