Detection of Resistance to Black Shank (Phytophthora Parasitica Var. Nicotianae) in a Trial with Diallel Crosses of Tobacco

Korubin - Aleksoska, Ana and Aleksoski, Jane (2015) Detection of Resistance to Black Shank (Phytophthora Parasitica Var. Nicotianae) in a Trial with Diallel Crosses of Tobacco. International Journal of Agriculture Innovations and Research, IJAIR, 3 (4). pp. 1114-1118. ISSN 2319-1473

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Investigations were made with nine varieties of tobacco types: Prilep (P-26, P-76, P-65, P-84), Yaka (YK 107/1), Djebel (Xanthe, XDj-M), Basmak (MB-3), Samsun (SM1) and Virginia (MV-1) and their 36 one-way diallel crosses for resistance to Black shank - Phytophthora parasitica var. nicotianae. The trial with parental genotypes and their hybrids was set up in 2011 and 2012 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, 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: Back-cross Hybridization, Black Shank (Phytophthora Parasitica Var. Nicotianae), Diallel Crosses, Resistance, Tobacco (Nicotiana Tabacum L.)
Subjects: Scientific Fields (Frascati) > Agricultural Sciences > Agriculture, forestry and fisheries
Divisions: Scientific Tobacco Institute
Depositing User: Prof. d-r. Ana Korubin - Aleksoska
Date Deposited: 02 Apr 2020 18:46
Last Modified: 02 Apr 2020 18:46

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