Genetic Analysis of Resistance Genes for the Rice Gall Midge in Two Rice Genotypes

Kumar, A. and Jain, A. and Sahu, R.K. and Shrivastava, M.N. and et al, . (2005) Genetic Analysis of Resistance Genes for the Rice Gall Midge in Two Rice Genotypes. Crop Science, 45 (4). pp. 1631-1635.

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Asian rice gall midge (Orseolia oryzae Wood-Mason) is the most destructive pest of rice (Oryza sativa L.) in several regions of South and Southeast Asia. Resistance to gall midge is primarily governed by single dominant genes in rice, thus newly evolving biotypes are able to overcome resistance genes rendering these genes ineffective. The objective of this study was to identify the gall midge resistance genes present in BG 380-2 and ‘Gurmatia’ and their relationship to known resistance genes. F1, F2, and F3 populations developed from crosses of BG 380-2 and Gurmatia with susceptible cultivars and differentials, possessing the known resistance genes, were screened for their reactions against gall midge biotype 1. Inheritance studies identified a single dominant gene for gall midge resistance in both BG 380-2 and Gurmatia. Allelic study revealed the gall midge resistance gene present in BG 380-2 was nonallelic to all currently known genes (Gm1, Gm2, gm3, Gm4, Gm5, Gm7, Gm8, and Gm9) that impart resistance against gall midge biotype 1 population and is designated as Gm10 The gall midge resistance gene present in Gurmatia was allelic to the Gm1 gene previously identified. This new resistance gene, Gm10, in BG 380-2 will be useful in breeding new varieties and for pyramiding multiple genes for durable resistance to rice gall midge.

Item Type: Article
Additional Information: This work is part of the Rockefeller Foundation(USA)-supported project "Identification of new gene(s) for gall midge (Orseolia oryzae Wood Mason) resistance" Code 99001#754 to the corresponding author.
Uncontrolled Keywords: Genetic analysis, resistance genes, Orseolia oryzae Wood-Mason, Oryza sativa L., BG 380-2, Gurmatia
Author Affiliation: Dep. of Plant Breeding and Genetics, Indira Gandhi Agricultural Univ., Raipur, International Centre for Genetic Engineering and Biotechnology (ICGEB), Aruna Asaf Ali Marg, New Delhi-110067, India
Subjects: Crop Improvement
Divisions: Other Crops
Depositing User: Mr Arbind Seth
Date Deposited: 14 Nov 2012 03:21
Last Modified: 14 Nov 2012 03:21
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