Genetic analysis and molecular mapping of Pitb with broad-spectrum resistance to Magnaporthe oryzae in rice

被引：5
作者：
Sun, Huimin [1 ,2 ]
Wu, Lihua [1 ]
Guo, Longping [3 ]
Song, Fugen [3 ]
Zheng, Zhuo [1 ]
Cheng, Zhou [2 ]
机构：
[1] Jinggangshan Univ, Coll Life Sci, Jian 343000, Jiangxi, Peoples R China
[2] Tongji Univ, Coll Life Sci, Shanghai 200092, Peoples R China
[3] Jian City Agr Sci, Jian 343000, Jiangxi, Peoples R China
来源：
EUPHYTICA | 2016年 / 209卷 / 03期
基金：
中国博士后科学基金;
关键词：
Rice; Resistance gene; Genetic analysis; Molecular mapping; BLAST RESISTANCE; CONFERRING RESISTANCE; DISEASE RESISTANCE; NUCLEOTIDE-BINDING; FIELD-RESISTANCE; GRISEA; IDENTIFICATION; MARKERS; CULTIVAR; VARIETY;
D O I：
10.1007/s10681-015-1608-8
中图分类号：
S3 [农学（农艺学）];
学科分类号：
0901 ;
摘要：
Zixuan 2 is a broad spectrum-resistance indica subspecies (Oryza sativa ssp. indica) with a high resistance to 15 Magnaporthe oryzae strains from ZA, ZB, and ZC. The F-1 generation of hybrid between Zixuan 2 and Lijiangxintuanheigu showed significant resistance to rice-blast pathogen ZB(13), and the ratio of resistant plants to susceptible plants was 3:1, indicating that the resistance of Zixuan 2 to rice blast is controlled by a single dominant karyogene or a quantitative trait locus, designated here as Pitb. Molecular marker analysis showed that the rice blast-resistance gene is located on the terminal short arm of chromosome 12 between IN936 and IN950, with a genetic distance of 3.0 cM and physical distance of 143 kbp. In addition, the localization found that Pitb was coseparated with marker IN937. The genetic data and recombination populations provided in this study will enable further fine-mapping and cloning of the resistance gene.
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收藏
页码：547 / 554
页数：8
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