Evaluation of Assam rice (Oryza sativa) genotypes for nitrogen use efficiency
We assessed genetic diversity in 26 rice genotypes including 21 landraces and five improved varieties grown in three different nitrogen doses, viz. 0, 40, and 60 kg/ha during kharif 2014-15, and identified superior nitrogen use efficient genotypes for lowland rice ecosystem. The presence of signifi...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Indian Council of Agricultural Research
2021-08-01
|
| Series: | The Indian Journal of Agricultural Sciences |
| Subjects: | |
| Online Access: | https://epubs.icar.org.in/index.php/IJAgS/article/view/114302 |
| _version_ | 1811164825739329536 |
|---|---|
| author | SHANTANU DAS PRAKASH BORAH DEBOJIT SARMA S S DAS N S BARUA SUBHASH BABU |
| author_facet | SHANTANU DAS PRAKASH BORAH DEBOJIT SARMA S S DAS N S BARUA SUBHASH BABU |
| author_sort | SHANTANU DAS |
| collection | DOAJ |
| description |
We assessed genetic diversity in 26 rice genotypes including 21 landraces and five improved varieties grown in three different nitrogen doses, viz. 0, 40, and 60 kg/ha during kharif 2014-15, and identified superior nitrogen use efficient genotypes for lowland rice ecosystem. The presence of significant genotypic differences was registered for 12 quantitative traits of nitrogen use efficiency, grain yield, and its related traits. Mahalanobis distance-based clustering grouped the genotypes into seven clusters. The maximum contribution towards divergence was due to flag leaf area followed by physiological nitrogen use efficiency and grain yield/plant. Principal component analysis performed on the 12 quantitative traits revealed that the first four principal components accounted for 83.57% variance among the genotypes. Grain yield/plant (0.43), nitrogen utilization efficiency (0.39), and nitrogen harvest index (0.37) accounted most for principal component 1. The genotypes namely Lothabor, Betguti Sali, and Luhasali were found to be suitable for the lowland rice ecosystem.
|
| first_indexed | 2024-04-10T15:28:36Z |
| format | Article |
| id | doaj.art-f3a607896b6b45f79fa43e59124231a2 |
| institution | Directory Open Access Journal |
| issn | 0019-5022 2394-3319 |
| language | English |
| last_indexed | 2024-04-10T15:28:36Z |
| publishDate | 2021-08-01 |
| publisher | Indian Council of Agricultural Research |
| record_format | Article |
| series | The Indian Journal of Agricultural Sciences |
| spelling | doaj.art-f3a607896b6b45f79fa43e59124231a22023-02-14T08:09:04ZengIndian Council of Agricultural ResearchThe Indian Journal of Agricultural Sciences0019-50222394-33192021-08-0191610.56093/ijas.v91i6.114302Evaluation of Assam rice (Oryza sativa) genotypes for nitrogen use efficiencySHANTANU DAS0PRAKASH BORAH1DEBOJIT SARMA2S S DAS3N S BARUA4SUBHASH BABU5ICAR-National Bureau of Plant Genetic Resources, Pusa Campus, New DelhiAssam Agricultural University, Jorhat, Assam 785 013, IndiaAssam Agricultural University, Jorhat, Assam 785 013, IndiaBirsa Agricultural University, Ranchi, JharkhandAssam Agricultural University, Jorhat, Assam 785 013, IndiaICAR-Indian Agricultural Research Institute, Pusa Campus, New Delhi We assessed genetic diversity in 26 rice genotypes including 21 landraces and five improved varieties grown in three different nitrogen doses, viz. 0, 40, and 60 kg/ha during kharif 2014-15, and identified superior nitrogen use efficient genotypes for lowland rice ecosystem. The presence of significant genotypic differences was registered for 12 quantitative traits of nitrogen use efficiency, grain yield, and its related traits. Mahalanobis distance-based clustering grouped the genotypes into seven clusters. The maximum contribution towards divergence was due to flag leaf area followed by physiological nitrogen use efficiency and grain yield/plant. Principal component analysis performed on the 12 quantitative traits revealed that the first four principal components accounted for 83.57% variance among the genotypes. Grain yield/plant (0.43), nitrogen utilization efficiency (0.39), and nitrogen harvest index (0.37) accounted most for principal component 1. The genotypes namely Lothabor, Betguti Sali, and Luhasali were found to be suitable for the lowland rice ecosystem. https://epubs.icar.org.in/index.php/IJAgS/article/view/114302Genetic divergenceLowland rice ecosystemPrincipal component analysisRice landracesVarying nitrogen regimes |
| spellingShingle | SHANTANU DAS PRAKASH BORAH DEBOJIT SARMA S S DAS N S BARUA SUBHASH BABU Evaluation of Assam rice (Oryza sativa) genotypes for nitrogen use efficiency The Indian Journal of Agricultural Sciences Genetic divergence Lowland rice ecosystem Principal component analysis Rice landraces Varying nitrogen regimes |
| title | Evaluation of Assam rice (Oryza sativa) genotypes for nitrogen use efficiency |
| title_full | Evaluation of Assam rice (Oryza sativa) genotypes for nitrogen use efficiency |
| title_fullStr | Evaluation of Assam rice (Oryza sativa) genotypes for nitrogen use efficiency |
| title_full_unstemmed | Evaluation of Assam rice (Oryza sativa) genotypes for nitrogen use efficiency |
| title_short | Evaluation of Assam rice (Oryza sativa) genotypes for nitrogen use efficiency |
| title_sort | evaluation of assam rice oryza sativa genotypes for nitrogen use efficiency |
| topic | Genetic divergence Lowland rice ecosystem Principal component analysis Rice landraces Varying nitrogen regimes |
| url | https://epubs.icar.org.in/index.php/IJAgS/article/view/114302 |
| work_keys_str_mv | AT shantanudas evaluationofassamriceoryzasativagenotypesfornitrogenuseefficiency AT prakashborah evaluationofassamriceoryzasativagenotypesfornitrogenuseefficiency AT debojitsarma evaluationofassamriceoryzasativagenotypesfornitrogenuseefficiency AT ssdas evaluationofassamriceoryzasativagenotypesfornitrogenuseefficiency AT nsbarua evaluationofassamriceoryzasativagenotypesfornitrogenuseefficiency AT subhashbabu evaluationofassamriceoryzasativagenotypesfornitrogenuseefficiency |