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鸡腿菇栽培中鸡爪菌的综合防治 被引量:8
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作者 王尚堃 李芳 +3 位作者 王汝长 康凤梅 李海东 于醒 《中国食用菌》 北大核心 2003年第5期32-33,共2页
关键词 鸡腿菇 栽培技术 鸡爪菌 综合防治 环境条件 病菌数量 培养料配制
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Analysis of Quantitative Trait Loci for Pathogenic Strain Pi-1 of Resistance to Rice False Smut in Rice(Oryza sativa)
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作者 李余生 杨娟 黄胜东 《Agricultural Science & Technology》 CAS 2015年第10期2179-2182,2317,共5页
In order to identify the resistant gene of rice false smut in rice, a recombi- nant inbred line (RILs) population with 157 lines derived from an inter-subspecies cross of Daguandao/IR28 by the single seed descent me... In order to identify the resistant gene of rice false smut in rice, a recombi- nant inbred line (RILs) population with 157 lines derived from an inter-subspecies cross of Daguandao/IR28 by the single seed descent method was used to detect quantitative trait loci (QTLs) conferring resistance to strain Pi-1 of rice false smut caused by Usti/aginoiclea virens (Cooke) Takahashi in 2012 and 2013. The disease rate indexes of the two parents and 157 RILs caused by the strain Pi-1 of rice false smut were scored and the QTLs for rice false smut resistance were detected accordingly by QTL Cartographer software. Seven QTLs controlling false smut re- sistance were detected on chromosomes 2, 7, 8, 11 and 12, respectively, with the phenotypic variance of 8.5%-17.2%. There were four QTLs detected in 2012 and 2013, respectively, and only one QTL was found in both two years, the phenotypic variation explained by this individual QTL was 13.5% and 17.2%, and the additive effects of this QTL contributed to the 9.9% and 14.3% decrease of disease index and therefore the disease resistance increased. The direction of the additive effects at five loci qFsr2a, qFsr8a, qFsr8b, qFsr11 and qFsr12 coincided with that predicted by phenotypes of the parents, and the IR28 alleles at these loci had positive effect against rice false smut while the negative effects were found in Daguandao alleles at qFsr2b and qFsr7. The qFsr11 should be useful in rice breeding for resistance to rice false smut in marker-assisted selection (MAS) program. 展开更多
关键词 RICE Rice false smut Pathogen strains Disease resistance Quantita- tive trait locus
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