Proučavanje broja gena i njihovog djelovanja u nasljeđivanju važnijih karakteristika kod F1 hibrida duhana (Investigations of the Number of Genes and Their Effect on the Inheritance of Some Major Important Characteristics of F1 Hybrids of Tobacco )

Korubin - Aleksoska, Ana (2008) Proučavanje broja gena i njihovog djelovanja u nasljeđivanju važnijih karakteristika kod F1 hibrida duhana (Investigations of the Number of Genes and Their Effect on the Inheritance of Some Major Important Characteristics of F1 Hybrids of Tobacco ). 43rd Croatian and 3rd International Symposium on Agriculture , Genetics, Plant Breeding and Seed Production. pp. 404-407. ISSN ISBN 978-953-6135-68-4

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Abstract

Inheritance of quantitative characteristics from parental pairs in their progeny is conditioned by various effective factors presenting a group of genes (polygenes), the effect of which is estimated by diallel analysis. Investigations of quantitative characters (stalk height, leaf number per stalk and green yield per stalk), were made on four parental genotypes of tobacco: Burley - B-2, Suhum - S-1 with pink flower, Suhum S-2 with white flower and Prilep - P-84-FR with red flower and their six diallel F1 hybrids. Crossings were made in 2006 and the final trial was set in 2007, on the field of Tobacco Institute-Prilep, in a randomized block design with four replications. The aim of our investigations was to determine the level of inheritance of measurable characters through assessment of the effective factors: number of genes (k) and their additive (d) and dominant (h) effects, which will be a significant contribution to the quantitative genetics of tobacco. Analyses and assessments were based on the methods and mathematical models of B. I. Hayman, K. Mather and J.L. Jinks. In all combinations, the additive effect was higher than the dominant one (d>h), implying that inheritance of quantitative characters is created mainly by the additive genes. Values for the effective factors are very low and insufficient to make their estimation. The highest grade for additive genes strength in the inheritance of stalk height was recorded in the Burley (B-2), and for the strength of dominant genes in Suhum (S-1 and S-2). The strongest effect of additive genes for the characters: number of leaves and green mass yield per stalk was recorded in Suhum (S-1 and S-2). Results presented in the paper are of a great interest for tobacco breeding (Nicotiana tabacum L.), and the methods are applicable for many other cultures.

Item Type: Article
Uncontrolled Keywords: tobacco (Nicotiana tabacum L.), diallel analysis, inheritance, effective factors, aditive (d) and dominant (h) gene effects.
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 15:51
Last Modified: 03 Apr 2020 15:51
URI: http://eprints.uklo.edu.mk/id/eprint/4784

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