Darvishzadeh, R. (2016). Genetic Variability, Structure Analysis, and Association Mapping of Resistance to Broomrape (Orobanche aegyptiaca Pers.) in Tobacco. , 18(5), 1419-1429.
R. Darvishzadeh. "Genetic Variability, Structure Analysis, and Association Mapping of Resistance to Broomrape (Orobanche aegyptiaca Pers.) in Tobacco". , 18, 5, 2016, 1419-1429.
Darvishzadeh, R. (2016). 'Genetic Variability, Structure Analysis, and Association Mapping of Resistance to Broomrape (Orobanche aegyptiaca Pers.) in Tobacco', , 18(5), pp. 1419-1429.
Darvishzadeh, R. Genetic Variability, Structure Analysis, and Association Mapping of Resistance to Broomrape (Orobanche aegyptiaca Pers.) in Tobacco. , 2016; 18(5): 1419-1429.

Genetic Variability, Structure Analysis, and Association Mapping of Resistance to Broomrape (Orobanche aegyptiaca Pers.) in Tobacco

Journal of Agricultural Science and Technology
Article 22, Volume 18, Issue 5, 2016, Pages 1419-1429    PDF (171.81 K)
Author
R. Darvishzadeh* 1, 2
1Department of Plant Breeding and Biotechnology, Faculty of Agriculture, Urmia University, Urmia, Islamic Republic of Iran.
2Institute of Biotechnology, Urmia University, Urmia, Islamic Republic of Iran.
Abstract
Broomrape is a debilitating holoparasiting weed in tobacco (Nicotiana tabacum L.) fields with devastating effects on its production. In this study, the reaction of 89 tobacco genotypes was evaluated against broomrape (Orobanche aegyptiaca) in randomized complete block design with three replications during two years. In each year, genotypes were planted in both non-inoculated and inoculated conditions where the soil of pots was mixed with 0.06 g of broomrape seed. Considering the average data of two years, studied genotypes did not show infection to broomrape at non-inoculated condition, whereas in inoculated condition, the majority of genotypes showed infection to broomrape. Two genotypes including ‘TB 22’ and ‘Kramograd NHH 659’ did not show any infection to broomrape in inoculated condition. In a molecular experiment, the fingerprint of tobacco genotypes was prepared with 26 SSR loci. Using model-based Bayesian approach, the studied association panel was divided into three subgroups. The D¢ was used to test the LD between pairs of SSR loci using the software package TASSEL. 7.08% of possible SSR locus pairs showed significant level of linkage disequilibrium (P<0.01). By using mixed linear model, 5 SSR loci from linkage groups 2, 10, 11 and 18 of tobacco reference map were identified as DNA markers to be linked to gene(s) controlling broomrape resistance in tobacco.
Keywords
Association analysis; Broomrape; Linkage Disequilibrium; Tobacco
References
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