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Resistance of Oryza nivara and Oryza eichingeri derived lines to brown planthopper, Nilaparvata lugens (Stal)

Authors:

S.A.P. Madurangi,

Department of Agricultural Biology, Faculty of Agriculture, University of Ruhuna, Mapalana, Kamburupitiya., LK
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W.L.G. Samarasinghe,

Rice Research and Development Institute, Department of Agriculture, Ibbagamuwa, Bathalagoda., LK
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S.G.J.N. Senanayake ,

Department of Agricultural Biology, Faculty of Agriculture, University of Ruhuna, Mapalana, Kamburupitiya., LK
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P.V. Hemachandra,

Rice Research and Development Institute, Department of Agriculture, Ibbagamuwa, Bathalagoda., LK
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Disna Ratnasekera

Department of Agricultural Biology, Faculty of Agriculture, University of Ruhuna, Mapalana, Kamburupitiya., LK
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Abstract

Abstract: This study evaluates the basis of brown planthopper (BPH) resistance in Oryza nivara (9864, WRAC 04), Oryza eichingeri (TC 01, TC 02), IR 54751-2-34-10-6-2 (an introgression line of Oryza officinalis), Ptb 33, Bg 380 and Bg 379/2 accessions by screening for resistance, and characterizes the genes by molecular techniques. Four BPH populations reared on Ptb33, Bg 380, Bg 379/2, IR 54751-2-34-10-6-2 and a virulent BPH population collected from rice fields in Kegalle area Sri Lanka were used for screening tests. Screening for resistance was conducted following the standard honeydew

test and molecular screening was carried out using specific molecular markers for bph2, Bph10 and Bph13 genes. Results of the screening tests for resistance showed that the level of resistance of the tested wild rice accessions (O. nivara and O. eichingeri) was not significantly different from that of Ptb 33. These accessions also showed high level of resistance to all the BPH populations used in this study. Molecular screening revealed positive results with O. nivara (WRAC 04) accession for bph 2 and Bph 13 markers and O. eichingeri derived lines (TC 01 & TC 02) for Bph 13 marker. Results showed that the emergence of virulent biotype in field rice cultivations have the potential to overcome the BPH resistance in Bg 379/2.

Keywords: Brown planthopper, honeydew test, molecular screening, Oryza nivara, Oryza eichingeri, wild rice.

Doi: 10.4038/jnsfsr.v39i2.3179

J.Natn.Sci.Foundation Sri Lanka 2011 39 (2): 175-181

How to Cite: Madurangi, S.A.P., Samarasinghe, W.L.G., Senanayake, S.G.J.N., Hemachandra, P.V. and Ratnasekera, D., 2011. Resistance of Oryza nivara and Oryza eichingeri derived lines to brown planthopper, Nilaparvata lugens (Stal). Journal of the National Science Foundation of Sri Lanka, 39(2), pp.175–181. DOI: http://doi.org/10.4038/jnsfsr.v39i2.3179
Published on 05 Jul 2011.
Peer Reviewed

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