Characterization of morpho-phenological traits in the traditional landraces of rice
The landraces of rice provide a wide range of genetic variations and environmental adaptation and act as excellent genetic resources for crop improvement. Natural germplasm that has been maintained through conservation is in desperate need of rigorous investigation in order to uncover new genes or...
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| Format: | Article |
| Language: | English |
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Indian Society of Plant Breeders
2023-03-01
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| Series: | Electronic Journal of Plant Breeding |
| Subjects: | |
| Online Access: | https://www.ejplantbreeding.org/index.php/EJPB/article/view/4247 |
| _version_ | 1797848061662199808 |
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| author | V. Krishnan*, V. Sivaranjani, M. Tamilzharasi and T. Anandhan |
| author_facet | V. Krishnan*, V. Sivaranjani, M. Tamilzharasi and T. Anandhan |
| author_sort | V. Krishnan*, V. Sivaranjani, M. Tamilzharasi and T. Anandhan |
| collection | DOAJ |
| description | The landraces of rice provide a wide range of genetic variations and environmental adaptation and act as excellent
genetic resources for crop improvement. Natural germplasm that has been maintained through conservation is in
desperate need of rigorous investigation in order to uncover new genes or alleles to introduce into rice breeding
programmes. Given this context, an investigation was done to determine the degree of genetic divergence and
variability across 31 rice landraces for various productivity, physiological, and grain quality traits. On evaluation of the
mean performance of landraces and the influence of characters in genetic divergence resulted in the identification of
better landraces viz., Vellaikuruvikar, Karupu Kavuni, Kichidi Samba and Athur Kichadi which are better for both grain
yield and quality traits that can be used to create better recombinants, by hybridization. These gene pools could be
used in selective breeding to significantly enhance the agronomic characters. Out of 20 traits that were investigated,15
traits viz., height of the plant, productive tillers per plant, length of panicle, spikelets per panicle, filled grains per
panicle, grain yield per plant, seedling root to shoot ratio, harvest index, head rice recovery, length of the kernel, length
to breadth ratio of kernel, breadth of kernel after cooking, length to breadth ratio of kernel after cooking, gelatinization
temperature and aroma were noted for high heritability and genetic advancement suggesting that additive gene action
predominates, there by opening up a wide range of opportunities for these traits to be improved through simple
phenotypic selection. |
| first_indexed | 2024-04-09T18:21:17Z |
| format | Article |
| id | doaj.art-b659a11af7e245a19f573a011f854278 |
| institution | Directory Open Access Journal |
| issn | 0975-928X |
| language | English |
| last_indexed | 2024-04-09T18:21:17Z |
| publishDate | 2023-03-01 |
| publisher | Indian Society of Plant Breeders |
| record_format | Article |
| series | Electronic Journal of Plant Breeding |
| spelling | doaj.art-b659a11af7e245a19f573a011f8542782023-04-12T06:39:39ZengIndian Society of Plant BreedersElectronic Journal of Plant Breeding0975-928X2023-03-0114123424510.37992/2023.1401.026Characterization of morpho-phenological traits in the traditional landraces of riceV. Krishnan*, V. Sivaranjani, M. Tamilzharasi and T. Anandhan0Department of Plant Breeding and Genetics, Pandit Jawharlal Nehru College of Agriculture and Research Institute, Karaikal 609603 *E Mail: anurathakrishnan66@gmail.comThe landraces of rice provide a wide range of genetic variations and environmental adaptation and act as excellent genetic resources for crop improvement. Natural germplasm that has been maintained through conservation is in desperate need of rigorous investigation in order to uncover new genes or alleles to introduce into rice breeding programmes. Given this context, an investigation was done to determine the degree of genetic divergence and variability across 31 rice landraces for various productivity, physiological, and grain quality traits. On evaluation of the mean performance of landraces and the influence of characters in genetic divergence resulted in the identification of better landraces viz., Vellaikuruvikar, Karupu Kavuni, Kichidi Samba and Athur Kichadi which are better for both grain yield and quality traits that can be used to create better recombinants, by hybridization. These gene pools could be used in selective breeding to significantly enhance the agronomic characters. Out of 20 traits that were investigated,15 traits viz., height of the plant, productive tillers per plant, length of panicle, spikelets per panicle, filled grains per panicle, grain yield per plant, seedling root to shoot ratio, harvest index, head rice recovery, length of the kernel, length to breadth ratio of kernel, breadth of kernel after cooking, length to breadth ratio of kernel after cooking, gelatinization temperature and aroma were noted for high heritability and genetic advancement suggesting that additive gene action predominates, there by opening up a wide range of opportunities for these traits to be improved through simple phenotypic selection.https://www.ejplantbreeding.org/index.php/EJPB/article/view/4247ricelandracesgcvpcvheritabilitypca |
| spellingShingle | V. Krishnan*, V. Sivaranjani, M. Tamilzharasi and T. Anandhan Characterization of morpho-phenological traits in the traditional landraces of rice Electronic Journal of Plant Breeding rice landraces gcv pcv heritability pca |
| title | Characterization of morpho-phenological traits in the traditional landraces of rice |
| title_full | Characterization of morpho-phenological traits in the traditional landraces of rice |
| title_fullStr | Characterization of morpho-phenological traits in the traditional landraces of rice |
| title_full_unstemmed | Characterization of morpho-phenological traits in the traditional landraces of rice |
| title_short | Characterization of morpho-phenological traits in the traditional landraces of rice |
| title_sort | characterization of morpho phenological traits in the traditional landraces of rice |
| topic | rice landraces gcv pcv heritability pca |
| url | https://www.ejplantbreeding.org/index.php/EJPB/article/view/4247 |
| work_keys_str_mv | AT vkrishnanvsivaranjanimtamilzharasiandtanandhan characterizationofmorphophenologicaltraitsinthetraditionallandracesofrice |