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Genetic variability and selection criteria in rice mutant lines as revealed by quantitative traits


Oladosu, Yusuff and Yusop, Mohd Rafii and Abdullah, Norhani and Abdul Malek, Mohammad and Harun, Abdul Rahim and Hussin, Ghazali and Abdul Latif, Mohammad and Kareem, Isiaka (2014) Genetic variability and selection criteria in rice mutant lines as revealed by quantitative traits. The Scientific World Journal, 2014. art. no. 190531. pp. 1-12. ISSN 2356-6140; ESSN: 1537-744X


Genetic based knowledge of different vegetative and yield traits play a major role in varietal improvement of rice. Genetic variation gives room for recombinants which are essential for the development of a new variety in any crop. Based on this background, this work was carried out to evaluate genetic diversity of derived mutant lines and establish relationships between their yield and yield components using multivariate analysis. To achieve this objective, two field trials were carried out on 45 mutant rice genotypes to evaluate their growth and yield traits. Data were taken on vegetative traits and yield and its components, while genotypic and phenotypic coefficients, variance components, expected genetic advance, and heritability were calculated. All the genotypes showed variations for vegetative traits and yield and its components. Also, there was positive relationship between the quantitative traits and the final yield with the exception of number of tillers. Finally, the evaluated genotypes were grouped into five major clusters based on the assessed traits with the aid of UPGMA dendrogram. So hybridization of group I with group V or group VI could be used to attain higher heterosis or vigour among the genotypes. Also, this evaluation could be useful in developing reliable selection indices for important agronomic traits in rice.

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Additional Metadata

Item Type: Article
Divisions: Faculty of Agriculture
Faculty of Biotechnology and Biomolecular Sciences
Institute of Tropical Agriculture
DOI Number: https://doi.org/10.1155/2014/190531
Publisher: Hindawi Publishing Corporation
Keywords: Rice mutant line; Quantitative traits; Genetic variability
Depositing User: Nabilah Mustapa
Date Deposited: 22 Apr 2016 01:19
Last Modified: 22 Apr 2016 01:19
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1155/2014/190531
URI: http://psasir.upm.edu.my/id/eprint/37765
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