Variation in nitrogen partitioning and reproductive stage nitrogen remobilization determines nitrogen grain production efficiency (NUEg) in diverse rice genotypes under varying nitrogen supply
Nitrogen (N) is an important macronutrient needed for grain yield, grain N and grain protein content in rice. Grain yield and quality are significantly determined by N availability. In this study, to understand the mechanisms associated with reproductive stage N remobilization and N partitioning to...
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Frontiers Media S.A.
2023-03-01
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| Series: | Frontiers in Plant Science |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fpls.2023.1093581/full |
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| author | Birendra K. Padhan Lekshmy Sathee Santosh Kumar Viswanathan Chinnusamy Arvind Kumar Arvind Kumar |
| author_facet | Birendra K. Padhan Lekshmy Sathee Santosh Kumar Viswanathan Chinnusamy Arvind Kumar Arvind Kumar |
| author_sort | Birendra K. Padhan |
| collection | DOAJ |
| description | Nitrogen (N) is an important macronutrient needed for grain yield, grain N and grain protein content in rice. Grain yield and quality are significantly determined by N availability. In this study, to understand the mechanisms associated with reproductive stage N remobilization and N partitioning to grain 2 years of field experiments were conducted with 30 diverse rice genotypes during 2019-Kharif and 2020-Kharif seasons. The experiments were conducted with two different N treatments; N deficient (N0-no external N application, available soil N; 2019-234.15 kgha-1, 2020-225.79 kgha-1) and N sufficient (N120-120 kgha-1 external N application, available soil N; 2019-363.77 kgha-1, 2020-367.95 kgha-1). N application increased the NDVI value, biomass accumulation, grain yield, harvest index and grain N accumulation. Post-anthesis N uptake and N remobilization from vegetative tissues to grain are critical for grain yield and N harvest index. Rice genotypes, Kalinga-1, BAM-4234, IR-8384-B-B102-3, Sahbhagi Dhan, BVD-109 and Nerica-L-42 showed a higher rate of N remobilization under N sufficient conditions. But, under N deficiency, rice genotypes-83929-B-B-291-3-1-1, BVD-109, IR-8384-B-B102-3 and BAM-4234 performed well showing higher N remobilization efficiency. The total amount of N remobilization was recorded to be high in the N120 treatment. The harvest index was higher in N120 during both the cropping seasons. RANBIR BASMATI, BAM-832, APO, BAM-247, IR-64, Vandana, and Nerica-L-44 were more efficient in N grain production efficiency under N deficient conditions. From this study, it is evident that higher grain N accumulation is not always associated with higher yield. IR-83929-B-B-291-3-1-1, Kalinga-1, APO, Pusa Basmati-1, and Nerica-L-44 performed well for different N use efficiency component traits under both N deficient (N0) and N sufficient (N120) conditions. Identifying genotypes/donors for N use efficiency-component traits is crucial in improving the fertilizer N recovery rate and site specific N management. |
| first_indexed | 2024-04-10T06:03:36Z |
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| language | English |
| last_indexed | 2024-04-10T06:03:36Z |
| publishDate | 2023-03-01 |
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| spelling | doaj.art-2ce3d2ffac634e88994af464ca6b8b962023-03-03T05:11:10ZengFrontiers Media S.A.Frontiers in Plant Science1664-462X2023-03-011410.3389/fpls.2023.10935811093581Variation in nitrogen partitioning and reproductive stage nitrogen remobilization determines nitrogen grain production efficiency (NUEg) in diverse rice genotypes under varying nitrogen supplyBirendra K. Padhan0Lekshmy Sathee1Santosh Kumar2Viswanathan Chinnusamy3Arvind Kumar4Arvind Kumar5Division of Plant Physiology, ICAR-Indian Agricultural Research Institute, New Delhi, IndiaDivision of Plant Physiology, ICAR-Indian Agricultural Research Institute, New Delhi, IndiaDivision of Crop Research, Indian Council of Agricultural Research (ICAR) Research Complex for Eastern Region, Patna, Bihar, IndiaDivision of Plant Physiology, ICAR-Indian Agricultural Research Institute, New Delhi, IndiaInternational Rice Research Institute (IRRI) South Asia Regional Centre (ISARC), Varanasi, Uttar Pradesh, IndiaInternational Crops Research Institute for the Semi-Arid Tropics, Patancheru, Telangana, IndiaNitrogen (N) is an important macronutrient needed for grain yield, grain N and grain protein content in rice. Grain yield and quality are significantly determined by N availability. In this study, to understand the mechanisms associated with reproductive stage N remobilization and N partitioning to grain 2 years of field experiments were conducted with 30 diverse rice genotypes during 2019-Kharif and 2020-Kharif seasons. The experiments were conducted with two different N treatments; N deficient (N0-no external N application, available soil N; 2019-234.15 kgha-1, 2020-225.79 kgha-1) and N sufficient (N120-120 kgha-1 external N application, available soil N; 2019-363.77 kgha-1, 2020-367.95 kgha-1). N application increased the NDVI value, biomass accumulation, grain yield, harvest index and grain N accumulation. Post-anthesis N uptake and N remobilization from vegetative tissues to grain are critical for grain yield and N harvest index. Rice genotypes, Kalinga-1, BAM-4234, IR-8384-B-B102-3, Sahbhagi Dhan, BVD-109 and Nerica-L-42 showed a higher rate of N remobilization under N sufficient conditions. But, under N deficiency, rice genotypes-83929-B-B-291-3-1-1, BVD-109, IR-8384-B-B102-3 and BAM-4234 performed well showing higher N remobilization efficiency. The total amount of N remobilization was recorded to be high in the N120 treatment. The harvest index was higher in N120 during both the cropping seasons. RANBIR BASMATI, BAM-832, APO, BAM-247, IR-64, Vandana, and Nerica-L-44 were more efficient in N grain production efficiency under N deficient conditions. From this study, it is evident that higher grain N accumulation is not always associated with higher yield. IR-83929-B-B-291-3-1-1, Kalinga-1, APO, Pusa Basmati-1, and Nerica-L-44 performed well for different N use efficiency component traits under both N deficient (N0) and N sufficient (N120) conditions. Identifying genotypes/donors for N use efficiency-component traits is crucial in improving the fertilizer N recovery rate and site specific N management.https://www.frontiersin.org/articles/10.3389/fpls.2023.1093581/fullNitrogen remobilization efficiency (NRE)Nitrogen Harvest Index (NHI)Nitrogen grain production efficiency (NUEg)Nitrogen use efficiencyRice, NUE, Nitrogen deficiencyOptimum Nitrogen |
| spellingShingle | Birendra K. Padhan Lekshmy Sathee Santosh Kumar Viswanathan Chinnusamy Arvind Kumar Arvind Kumar Variation in nitrogen partitioning and reproductive stage nitrogen remobilization determines nitrogen grain production efficiency (NUEg) in diverse rice genotypes under varying nitrogen supply Frontiers in Plant Science Nitrogen remobilization efficiency (NRE) Nitrogen Harvest Index (NHI) Nitrogen grain production efficiency (NUEg) Nitrogen use efficiency Rice, NUE, Nitrogen deficiency Optimum Nitrogen |
| title | Variation in nitrogen partitioning and reproductive stage nitrogen remobilization determines nitrogen grain production efficiency (NUEg) in diverse rice genotypes under varying nitrogen supply |
| title_full | Variation in nitrogen partitioning and reproductive stage nitrogen remobilization determines nitrogen grain production efficiency (NUEg) in diverse rice genotypes under varying nitrogen supply |
| title_fullStr | Variation in nitrogen partitioning and reproductive stage nitrogen remobilization determines nitrogen grain production efficiency (NUEg) in diverse rice genotypes under varying nitrogen supply |
| title_full_unstemmed | Variation in nitrogen partitioning and reproductive stage nitrogen remobilization determines nitrogen grain production efficiency (NUEg) in diverse rice genotypes under varying nitrogen supply |
| title_short | Variation in nitrogen partitioning and reproductive stage nitrogen remobilization determines nitrogen grain production efficiency (NUEg) in diverse rice genotypes under varying nitrogen supply |
| title_sort | variation in nitrogen partitioning and reproductive stage nitrogen remobilization determines nitrogen grain production efficiency nueg in diverse rice genotypes under varying nitrogen supply |
| topic | Nitrogen remobilization efficiency (NRE) Nitrogen Harvest Index (NHI) Nitrogen grain production efficiency (NUEg) Nitrogen use efficiency Rice, NUE, Nitrogen deficiency Optimum Nitrogen |
| url | https://www.frontiersin.org/articles/10.3389/fpls.2023.1093581/full |
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