<FONT face="Verdana">Improvement of Gall Midge Resistance for Restorer Line in Rice by Molecular <BR>Marker Assisted Selection</FONT>

LIU   Wu-ge ,WANG  Feng ,XIAO   Han-xiang ,LIU   Zhen-rong,LI  Jin-hua ,LIAO  Yi-long  ,ZHU   Man-shan  ,HUANG   Hui-jun,HUANG   Bing-chao ,ZHANG   Yang

doi:10.3969/j.issn.1001-7216.2010.06.004

Chinese Journal OF Rice Science >

2010 , Vol. 24 >Issue 6: 581 - 586

DOI: https://doi.org/10.3969/j.issn.1001-7216.2010.06.004

研究报告

Improvement of Gall Midge Resistance for Restorer Line in Rice by Molecular
Marker Assisted Selection

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¹Rice Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou 510640, China； ²Plant Protection Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou 510640, China； *Corresponding author, E-mail: fwang1631@163.com

Received date: 1900-01-01

Revised date: 1900-01-01

Online published: 2010-11-10

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Abstract

Gm6, a dominant gene conferring resistance to the four biotypes of Asian rice gall midge (Orseolia oryzae WoodMansion) occurred in South China from the donor KG18, was introduced into the restorer line Guanghui 998 with good grain quality and poor gall midge resistance, by using backcross breeding and molecular markerassisted selection. Six elite improved lines were developed based on the results of molecular markerassisted analysis, the recovery ratio of genetic background and the performance of agronomic traits. Evaluation of resistance to Chinese gall midge biotype 1 and biotype 4 was carried out. All the improved lines were immune to the pest with the ratio of silver shoots of 0 whereas the check Guanghui 998 were highly susceptible with the ratio of silver shoots of 98%. The hybrid F1, derived from the improved lines, showed moderate resistance against gall midge with the ratios of silver shoots ranging from 10% to 20%. The investigation on agronomic traits of the improved lines showed that there was no significant difference between the improved lines and the check except for 1000grain weight between one line and the check Guanghui 998. The improved lines could be used for breeding hybrid rice with higher gall midge resistance.

Key words： rice gall midge resistance; restorer line; molecular markerassisted selection; rice; breeding

Cite this article

LIU Wu-ge ,WANG Feng ,XIAO Han-xiang ,LIU Zhen-rong,LI Jin-hua ,LIAO Yi-long ,ZHU Man-shan ,HUANG Hui-jun,HUANG Bing-chao ,ZHANG Yang . Improvement of Gall Midge Resistance for Restorer Line in Rice by Molecular
Marker Assisted Selection[J]. Chinese Journal OF Rice Science, 2010 , 24(6) : 581 -586 . DOI: 10.3969/j.issn.1001-7216.2010.06.004

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