DIALLEL CROSSES TRIAL – THE BASIS FOR DETECTION OF RESISTANCE TO DISEASES IN TOBACCO

Korubin - Aleksoska, Ana and Arsov, Zlatko and Miceska, Gordana and Gveroska, Biljana and Aleksoski, Jane and Bebic, Zarko (2014) DIALLEL CROSSES TRIAL – THE BASIS FOR DETECTION OF RESISTANCE TO DISEASES IN TOBACCO. Тутун/Tobacco, 64 (7-12). pp. 3-12. ISSN 0494-3244

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Abstract

Investigations were made with ten varieties of tobacco types : Prilep (P- 23 , P- 76 , P- 66-9/7 , P-84), Yaka (YK 10-7/1), Djebel (Xanthe, XDj-M), Basmak (MB-3), Samsun (SM-1), Sirdili (SM-LL) and Virginia (MV-1) and their 45 diallel crosses for resistance to diseases, with an emphasis on black shank - Phytophthora parasitica var. nicotianae. The trial with parental genotypes and their hybrids was set up in 2011, 2012 and 2013 at the Experimental field of the Scientific Tobacco Institute - Prilep in randomized block design with three replications. Traditional agricultural practices were applied during the growing season. The resistance/susceptibility degree was estimated according to a scale recommended by FAO. The aim of this paper is the detection of resistance to black shank and creation of resistant lines, using diallel analysis to obtain a knowledge on the genetics of this disease. The highest resistance to the disease was recorded in YK 10-7/1 and SM-LL, while the varieties MV-1 and P-76 showed to be the most susceptible. The highest resistance in the diallel was recorded in the crosses where one of the parents was YK 10-7/1, which indicates a possession of dominant gene of resistance. In the process of breeding, the method of Back-cross hybridization was used in order to increase the varieties resistance to the black shank disease.

Item Type: Article
Uncontrolled Keywords: tobacco (Nicotiana tabacum L.), diallel crosses, Back-cross hybridization, resistance, black shank (Phytophthora parasitica var. nicotianae).
Subjects: Scientific Fields (Frascati) > Agricultural Sciences > Agriculture, forestry and fisheries
Divisions: Scientific Tobacco Institute
Depositing User: Prof. d-r. Ana Korubin - Aleksoska
Date Deposited: 03 Apr 2020 08:17
Last Modified: 03 Apr 2020 08:17
URI: http://eprints.uklo.edu.mk/id/eprint/4771

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