Genetic Variability and Selection Criteria in Rice Mutant Lines as Revealed by Quantitative Traits
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 gene...
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| Format: | Article |
| Language: | English |
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Wiley
2014-01-01
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| Series: | The Scientific World Journal |
| Online Access: | http://dx.doi.org/10.1155/2014/190531 |
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| author | Yusuff Oladosu M. Y. Rafii Norhani Abdullah Mohammad Abdul Malek H. A. Rahim Ghazali Hussin Mohammad Abdul Latif Isiaka Kareem |
| author_facet | Yusuff Oladosu M. Y. Rafii Norhani Abdullah Mohammad Abdul Malek H. A. Rahim Ghazali Hussin Mohammad Abdul Latif Isiaka Kareem |
| author_sort | Yusuff Oladosu |
| collection | DOAJ |
| description | 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. |
| format | Article |
| id | doaj-art-f22aff20436a450fb6db11ff98767d6c |
| institution | Kabale University |
| issn | 2356-6140 1537-744X |
| language | English |
| publishDate | 2014-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | The Scientific World Journal |
| spelling | doaj-art-f22aff20436a450fb6db11ff98767d6c2025-02-03T01:20:45ZengWileyThe Scientific World Journal2356-61401537-744X2014-01-01201410.1155/2014/190531190531Genetic Variability and Selection Criteria in Rice Mutant Lines as Revealed by Quantitative TraitsYusuff Oladosu0M. Y. Rafii1Norhani Abdullah2Mohammad Abdul Malek3H. A. Rahim4Ghazali Hussin5Mohammad Abdul Latif6Isiaka Kareem7Institute of Tropical Agriculture, Universiti Putra Malaysia (UPM), Serdang, 43400 Selangor, MalaysiaInstitute of Tropical Agriculture, Universiti Putra Malaysia (UPM), Serdang, 43400 Selangor, MalaysiaInstitute of Tropical Agriculture, Universiti Putra Malaysia (UPM), Serdang, 43400 Selangor, MalaysiaInstitute of Tropical Agriculture, Universiti Putra Malaysia (UPM), Serdang, 43400 Selangor, MalaysiaBioscience and Agrotechnology Division, Malaysian Nuclear Agency, Bangi, 43000 Selangor, MalaysiaStrategic Livestock Research Centre, Malaysian Agricultural Research and Development Institute (MARDI), Serdang, 43400 Selangor, MalaysiaDepartment of Crop Science, Faculty of Agriculture, Universiti Putra Malaysia (UPM), Serdang, 43400 Selangor, MalaysiaInstitute of Tropical Agriculture, Universiti Putra Malaysia (UPM), Serdang, 43400 Selangor, MalaysiaGenetic 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.http://dx.doi.org/10.1155/2014/190531 |
| spellingShingle | Yusuff Oladosu M. Y. Rafii Norhani Abdullah Mohammad Abdul Malek H. A. Rahim Ghazali Hussin Mohammad Abdul Latif Isiaka Kareem Genetic Variability and Selection Criteria in Rice Mutant Lines as Revealed by Quantitative Traits The Scientific World Journal |
| title | Genetic Variability and Selection Criteria in Rice Mutant Lines as Revealed by Quantitative Traits |
| title_full | Genetic Variability and Selection Criteria in Rice Mutant Lines as Revealed by Quantitative Traits |
| title_fullStr | Genetic Variability and Selection Criteria in Rice Mutant Lines as Revealed by Quantitative Traits |
| title_full_unstemmed | Genetic Variability and Selection Criteria in Rice Mutant Lines as Revealed by Quantitative Traits |
| title_short | Genetic Variability and Selection Criteria in Rice Mutant Lines as Revealed by Quantitative Traits |
| title_sort | genetic variability and selection criteria in rice mutant lines as revealed by quantitative traits |
| url | http://dx.doi.org/10.1155/2014/190531 |
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