QUANTITATIVE GENETIC INVESTIGATIONS ON SOME IMPORTANT TRAITS IN TOBACCO VARIETIES AND THEIR DIALLEL ONE-WAY AND BACK-CROSS GENERATIONS

Korubin - Aleksoska, Ana (2016) QUANTITATIVE GENETIC INVESTIGATIONS ON SOME IMPORTANT TRAITS IN TOBACCO VARIETIES AND THEIR DIALLEL ONE-WAY AND BACK-CROSS GENERATIONS. Тутун/Tobacco, 66 (7-12). pp. 3-11. ISSN 0494-3244

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Abstract

Investigations were made on stalk height with inflorescence, leaf number and dry mass yield per stalk in four parental tobacco genotypes and their one-way diallel crossing in F1 , F2 , BC1 – P1 and BC1 – P2 . Diallel analysis allows better understanding of the genetic character of parents and their hybrids. The trial was set up in the Experimental field of the Tobacco Institute–Prilep in 2014 and 2015, in randomized block design with four replications. The aim of investigations was to get important information on the heredity of quantitative traits, through genetic components of variance for F1 , F2 and two BC1 generations. Investigations show that additive variance is more effective in inheritance of the investigated traits in the above generations. The interaction between additive and dominant genes for stalk height and leaf number per stalk in BC1 is different from that in other generations, whereas for dry mass yield the interpretation is the same in all generations. The ratio of the total number of dominant and recessive genes in BC1 differs from other generations regarding the first two traits, whereas for dry mass yield all generations are interpreted identically. The heritability is very high, indicating that the studied traits are highly heritable.

Item Type: Article
Uncontrolled Keywords: tobacco (Nicotiana tabacum L.), diallel analysis, variance, interaction, heritability.
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/4768

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