Investigations of Combining Abilities in Diallel Set of Varieties Belonging to Several Tobacco Types

Korubin - Aleksoska, Ana and Aleksoski, Jane (2012) Investigations of Combining Abilities in Diallel Set of Varieties Belonging to Several Tobacco Types. Agriculturae Conspectus Scientificus, acs, 77 (4). pp. 203-206. ISSN 1331-7776.

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General and specifi c combining abilities were investigated for the characters stalk
height, leaf number, fresh mass and dry mass per stalk in four parental genotypes
(Burley B-2/93, pink fl ower Suhum - S1, white fl ower Suhum - S2 and Prilep P-84) together with their six diallel F1 hybrids with the aim of improving the process of creation of new varieties. Th e trial was set up in 2007 at the Experimental fi eld of Tobacco
Institute-Prilep in randomized block design with four replications. For the analysis of
the combining abilities, Griffi ng’s Method 2 Model 1 was used.
Th e best general combiner for stalk height and fresh/dry yield mass per stalk was
B-2/93, and for leaf number it was P-84. Hybrids S2 x P-84 and S1 x P-84 showed the
best SCA for stalk height. Th e three varieties in these two combinations showed low
GCA for the same character. Th e only combination with high SCA for leaf number
per stalk was S1 x S2 (hybrid created from two lines of a same variety, diff ering only
by their fl owers color, which indicates an intravarietal hybridization, applied as a
method for maintenance of varieties, in order to prevent degeneration and to increase
the biological potential of the variety). Hybrids B-2/93 x S2, B-2/93 x P-84 and B-2/93
x S1 have high SCA for fresh/dry mass yield per stalk. In all three combinations, maternal variety B-2/93 was with high GCA values, and parental varieties with low GCA

Item Type: Article
Uncontrolled Keywords: tobacco (Nicotiana tabacum L.); quantitative traits; diallel crossings; inheritance; partial dominance; intermediate; heterosis; GCA - general combining abilities; SCA - specifi c combining abilities
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 18:44
Last Modified: 02 Apr 2020 18:44

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