INVESTIGATIONS OF HERITABILITY AS AN INDICATOR OF THE INHERITANCE OF QUANTITATIVE CHARACTERS IN TOBACCO

Aleksoski, Jane and Dimitrieski, Miroslav and Korubin - Aleksoska, Ana (2013) INVESTIGATIONS OF HERITABILITY AS AN INDICATOR OF THE INHERITANCE OF QUANTITATIVE CHARACTERS IN TOBACCO. Тутун/Tobacco, 63 (7-12). pp. 7-12. ISSN 0494-3244

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Abstract

Mode and level of inheritance of some major quantitative characters (stalk height, leaf number per stalk, middle belt leaf area, green and dry mass yield per stalk) was investigated in four parental genotypes (Burley - B 2/93, Suchum - S1, Suchum - S2 and Prilep - P-84) and their six diallel F1 hybrids. The trial was set up in 2007, 2008 and 2009 in the field of Tobacco Institute-Prilep in a randomized block design with four replications. The aim of these investigations is to study the mode of inheritance and to determine heritability, i.e. degree of inheritance of major quantitative characters, which will allow us to give recommendations regarding the choice of parental genotypes and directions in creation of new cultivars, as our contribution to genetics of tobacco. Mode of inheritance was estimated according to the test- significance of the mean value of F1 progeny compared to the parental average. Narrow-sense heritability was estimated after Allard (1960), while broad-sense heritability and genetic components after Mather and Jinks (1974). The mode of inheritance in the hybrids was different. Positive heterosis for stalk height was recorded in S1 x S2 and S2 x P - 84, and for green and dry mass yields per stalk in S1 x S2. Negative heterosis occurs for leaf number and dry mass yield in S1 x P - 84 and S2 x P - 84 , while for dry mass yield in S1 x P - 84. Inheritance of the characters during the three years of investigation was identical. The highest narrow- and broad-sense heritability index during the three years of investigation was recorded for stalk height in 2007, and for dry mass yield in 2008 and 2009. The lowest values for both types of heritability were recorded for the character leaf number per stalk. In all investigated charcters, the values of broad-sense heritability were higher than those of narrow-sense heritability.

Item Type: Article
Uncontrolled Keywords: tobacco (Nicotiana tanacum L.), heredity, intermediate, partial dominance, dominance, heterosis, narrow-sense and broad-sense heritability (h2).
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
URI: http://eprints.uklo.edu.mk/id/eprint/4615

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