Genetic variability studies in early generation prebreeding restorer germplasm of the cross CBSN 25 x WRM 93-20
The present investigation was carried out to understand the genetic variability, association, cause and effect relationships between yield and its attributing agronomic and physiological traits in 23 F3 families of pre-breeding restorer germplasm in a hybrid rice program for six agronomic and thre...
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| Format: | Article |
| Language: | English |
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Indian Society of Plant Breeders
2022-09-01
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| Series: | Electronic Journal of Plant Breeding |
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| Online Access: | https://www.ejplantbreeding.org/index.php/EJPB/article/view/4358 |
| _version_ | 1827972768010862592 |
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| author | R. Sravanthi1, D. Kumaresan2*, R. Saraswathi 3 and N. Sritharan 4 |
| author_facet | R. Sravanthi1, D. Kumaresan2*, R. Saraswathi 3 and N. Sritharan 4 |
| author_sort | R. Sravanthi1, D. Kumaresan2*, R. Saraswathi 3 and N. Sritharan 4 |
| collection | DOAJ |
| description | The present investigation was carried out to understand the genetic variability, association, cause and effect
relationships between yield and its attributing agronomic and physiological traits in 23 F3 families of pre-breeding
restorer germplasm in a hybrid rice program for six agronomic and three physiological characters. The variability and
heritability parameters were grouped under the high category for the number of productive tillers per plant, leaf area
per plant, dry matter production and single plant yield. The traits viz., the number of tillers per plant and panicle length,
leaf area per plant and dry matter production showed a direct correlation with single plant yield and in cause and effect
relationships. All traits had a direct influence on single plant yield except days to 50% flowering and chlorophyll index.
At the intra-family level, six families namely 30, 35, 36, 46, 55 and 82 showed high variability and heritability values of
all parameters for six traits. All nine traits exhibited normal distribution. |
| first_indexed | 2024-04-09T19:26:35Z |
| format | Article |
| id | doaj.art-5bc742e539b140f6b86140b06e4129ac |
| institution | Directory Open Access Journal |
| issn | 0975-928X |
| language | English |
| last_indexed | 2024-04-09T19:26:35Z |
| publishDate | 2022-09-01 |
| publisher | Indian Society of Plant Breeders |
| record_format | Article |
| series | Electronic Journal of Plant Breeding |
| spelling | doaj.art-5bc742e539b140f6b86140b06e4129ac2023-04-05T07:20:10ZengIndian Society of Plant BreedersElectronic Journal of Plant Breeding0975-928X2022-09-0113386587210.37992/2022.1303.109Genetic variability studies in early generation prebreeding restorer germplasm of the cross CBSN 25 x WRM 93-20R. Sravanthi1, D. Kumaresan2*, R. Saraswathi 3 and N. Sritharan 401Department of Genetics and Plant Breeding, Tamil Nadu Agricultural University, Coimbatore 2Department of Rice, Tamil Nadu Agricultural University, Coimbatore 3Department of Plant Genetic Resources, Tamil Nadu Agricultural University, Coimbatore 4Department of Crop Physiology, Tamil Nadu Agricultural University, Coimbatore *E-Mail: kumaresan.dharmalingam@gmail.comThe present investigation was carried out to understand the genetic variability, association, cause and effect relationships between yield and its attributing agronomic and physiological traits in 23 F3 families of pre-breeding restorer germplasm in a hybrid rice program for six agronomic and three physiological characters. The variability and heritability parameters were grouped under the high category for the number of productive tillers per plant, leaf area per plant, dry matter production and single plant yield. The traits viz., the number of tillers per plant and panicle length, leaf area per plant and dry matter production showed a direct correlation with single plant yield and in cause and effect relationships. All traits had a direct influence on single plant yield except days to 50% flowering and chlorophyll index. At the intra-family level, six families namely 30, 35, 36, 46, 55 and 82 showed high variability and heritability values of all parameters for six traits. All nine traits exhibited normal distribution.https://www.ejplantbreeding.org/index.php/EJPB/article/view/4358ricepre-breedinggenetic variabilitycorrelation and path analysis |
| spellingShingle | R. Sravanthi1, D. Kumaresan2*, R. Saraswathi 3 and N. Sritharan 4 Genetic variability studies in early generation prebreeding restorer germplasm of the cross CBSN 25 x WRM 93-20 Electronic Journal of Plant Breeding rice pre-breeding genetic variability correlation and path analysis |
| title | Genetic variability studies in early generation prebreeding restorer germplasm of the cross CBSN 25 x WRM 93-20 |
| title_full | Genetic variability studies in early generation prebreeding restorer germplasm of the cross CBSN 25 x WRM 93-20 |
| title_fullStr | Genetic variability studies in early generation prebreeding restorer germplasm of the cross CBSN 25 x WRM 93-20 |
| title_full_unstemmed | Genetic variability studies in early generation prebreeding restorer germplasm of the cross CBSN 25 x WRM 93-20 |
| title_short | Genetic variability studies in early generation prebreeding restorer germplasm of the cross CBSN 25 x WRM 93-20 |
| title_sort | genetic variability studies in early generation prebreeding restorer germplasm of the cross cbsn 25 x wrm 93 20 |
| topic | rice pre-breeding genetic variability correlation and path analysis |
| url | https://www.ejplantbreeding.org/index.php/EJPB/article/view/4358 |
| work_keys_str_mv | AT rsravanthi1dkumaresan2rsaraswathi3andnsritharan4 geneticvariabilitystudiesinearlygenerationprebreedingrestorergermplasmofthecrosscbsn25xwrm9320 |