Mapping and validation of QTLs for rice sheath blight resistance

Sheath blight, caused by Rhizoctonia solani, is one of the most serious diseases of rice. Among 33 rice accessions, mainly from National Institute of Agrobiological Sciences (NIAS) Core Collection, we found three landraces from the Himalayas-Jarjan, Nepal 555 and Nepal 8-with resistance to sheath bl...

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Veröffentlicht in:Breeding science. - 1998. - 63(2013), 3 vom: 02. Sept., Seite 301-8
1. Verfasser: Taguchi-Shiobara, Fumio (VerfasserIn)
Weitere Verfasser: Ozaki, Hidenobu, Sato, Hiroyuki, Maeda, Hiroaki, Kojima, Yoichiro, Ebitani, Takeshi, Yano, Masahiro
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2013
Zugriff auf das übergeordnete Werk:Breeding science
Schlagworte:Journal Article CSSL Oryza sativa L. QTL Rhizoctonia solani chromosomal segment substitution line rice sheath blight resistance
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520 |a Sheath blight, caused by Rhizoctonia solani, is one of the most serious diseases of rice. Among 33 rice accessions, mainly from National Institute of Agrobiological Sciences (NIAS) Core Collection, we found three landraces from the Himalayas-Jarjan, Nepal 555 and Nepal 8-with resistance to sheath blight in 3 years' field testing. Backcrossed inbred lines (BILs) derived from a cross between Jarjan and the leading Japanese cultivar Koshihikari were used in QTL analyses. Since later-heading lines show fewer lesions, we used only earlier-heading BILs to avoid association with heading date. We detected eight QTLs; the Jarjan allele of three of these increased resistance. Only one QTL, on chromosome 9 (between markers Nag08KK18184 and Nag08KK18871), was detected in all 3 years. Chromosome segment substitution lines (CSSLs) carrying it showed resistance in field tests. Thirty F2 lines derived from a cross between Koshihikari and one CSSL supported the QTL 
650 4 |a Journal Article 
650 4 |a CSSL 
650 4 |a Oryza sativa L. 
650 4 |a QTL 
650 4 |a Rhizoctonia solani 
650 4 |a chromosomal segment substitution line 
650 4 |a rice sheath blight resistance 
700 1 |a Ozaki, Hidenobu  |e verfasserin  |4 aut 
700 1 |a Sato, Hiroyuki  |e verfasserin  |4 aut 
700 1 |a Maeda, Hiroaki  |e verfasserin  |4 aut 
700 1 |a Kojima, Yoichiro  |e verfasserin  |4 aut 
700 1 |a Ebitani, Takeshi  |e verfasserin  |4 aut 
700 1 |a Yano, Masahiro  |e verfasserin  |4 aut 
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