QUANTITATIVE TRAIT LOCI ASSOCIATED WITH ISOLATE SPECIFIC AND ISOLATE NON-SPECIFIC PARTIAL RESISTANCE TO SCLEROTINIA SCLEROTIORUM IN SUNFLOWER

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AMOOZADEH M.; DARVISHZADEH R.; DAVAR R.; ABDOLLAHI MANDOULAKANI B.; HADDADI P.; BASIRNIA A.

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Journal: AMIRKABIR Year:2015 | Volume:17 | Issue:1 Page(s): 213-226

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Title

QUANTITATIVE TRAIT LOCI ASSOCIATED WITH ISOLATE SPECIFIC AND ISOLATE NON-SPECIFIC PARTIAL RESISTANCE TO SCLEROTINIA SCLEROTIORUM IN SUNFLOWER

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Keywords

BASAL STEM ROT

HELIANTHUS ANNUUS L.

ISOLATE SPECIFICITY

PARTIAL RESISTANCE

QTL MAPPING

Abstract

BASAL STEM ROT caused by Sclerotinia sclerotiorum (Lib.) de Bary is one of the most important diseases of sunflower. Quantitative trait loci (QTL) implicated in PARTIAL RESISTANCE to two isolates of S. sclerotiorum (SSU107 and SSKH41) were investigated using F9 recombinant inbred lines (RILs) from the cross between sunflower parental lines PAC2 and RHA266. Experiments were conducted in completely randomized design with 3-6 replications under controlled conditions. The reaction of genotypes to BASAL STEM ROT disease was evaluated by measuring the percentage of necrosis area three days after inoculation. Combined analysis of experiments showed significant interactions between sunflower genotypes and S. sclerotiorum isolates suggesting that PARTIAL RESISTANCE to S. sclerotiorum should be isolate-specific in sunflower. QTLs were mapped using an updated high-density SSR and SNP linkage map. The map consisted of 210 SSRs and 11 genederived markers placed in 17 linkage groups (LGs). The total map length was 1,653.1 cM with a mean density of 1 marker per 7.44 cM. A total of 14 QTLs were detected for PARTIAL RESISTANCE to two isolates. The phenotypic variance explained by QTLs (R2) ranged from 0.10 to 9.85. The sign of additive gene effects showed that favorable alleles for PARTIAL RESISTANCE to isolates came from both parents. Six QTLs were common between two isolates on LGs 1, 8 and 17, whereas the others were specific for each isolate. Colocalized QTLs on LG 1 were linked to the glutathione S-transferase gene (GST). The colocalized QTLs for PARTIAL RESISTANCE to BASAL STEM ROT isolates could be good candidates for marker assisted selection (MAS).

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APA: Copy

AMOOZADEH, M., DARVISHZADEH, R., DAVAR, R., ABDOLLAHI MANDOULAKANI, B., HADDADI, P., & BASIRNIA, A.. (2015). QUANTITATIVE TRAIT LOCI ASSOCIATED WITH ISOLATE SPECIFIC AND ISOLATE NON-SPECIFIC PARTIAL RESISTANCE TO SCLEROTINIA SCLEROTIORUM IN SUNFLOWER. AMIRKABIR, 17(1), 213-226. SID. https://sid.ir/paper/646376/en

Vancouver: Copy

AMOOZADEH M., DARVISHZADEH R., DAVAR R., ABDOLLAHI MANDOULAKANI B., HADDADI P., BASIRNIA A.. QUANTITATIVE TRAIT LOCI ASSOCIATED WITH ISOLATE SPECIFIC AND ISOLATE NON-SPECIFIC PARTIAL RESISTANCE TO SCLEROTINIA SCLEROTIORUM IN SUNFLOWER. AMIRKABIR[Internet]. 2015;17(1):213-226. Available from: https://sid.ir/paper/646376/en

IEEE: Copy

M. AMOOZADEH, R. DARVISHZADEH, R. DAVAR, B. ABDOLLAHI MANDOULAKANI, P. HADDADI, and A. BASIRNIA, “QUANTITATIVE TRAIT LOCI ASSOCIATED WITH ISOLATE SPECIFIC AND ISOLATE NON-SPECIFIC PARTIAL RESISTANCE TO SCLEROTINIA SCLEROTIORUM IN SUNFLOWER,” AMIRKABIR, vol. 17, no. 1, pp. 213–226, 2015, [Online]. Available: https://sid.ir/paper/646376/en

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