Local nitrogen application increases maize post-silking nitrogen uptake of responsive genotypes via enhanced deep root growth
Nitrogen (N) is unevenly distributed throughout the soil and plant roots proliferate in N-rich soil patches. However, the relationship between the root response to localized N supply and maize N uptake efficiency among different genotypes is unclear. In this study, four maize varieties were evaluate...
| Main Authors: | , , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2023-01-01
|
| Series: | Journal of Integrative Agriculture |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2095311922000120 |
| _version_ | 1797960977191272448 |
|---|---|
| author | Zhe CHEN Wei REN Xia YI Qiang LI Hong-guang CAI Farhan ALI Li-xing YUAN Guo-hua MI Qing-chun PAN Fan-jun CHEN |
| author_facet | Zhe CHEN Wei REN Xia YI Qiang LI Hong-guang CAI Farhan ALI Li-xing YUAN Guo-hua MI Qing-chun PAN Fan-jun CHEN |
| author_sort | Zhe CHEN |
| collection | DOAJ |
| description | Nitrogen (N) is unevenly distributed throughout the soil and plant roots proliferate in N-rich soil patches. However, the relationship between the root response to localized N supply and maize N uptake efficiency among different genotypes is unclear. In this study, four maize varieties were evaluated to explore genotypic differences in the root response to local N application in relation to N uptake. A split-root system was established for hydroponically-grown plants and two methods of local N application (local banding and local dotting) were examined in the field. Genotypic differences in the root length response to N were highly correlated between the hydroponic and field conditions (r>0.99). Genotypes showing high response to N, ZD958, XY335 and XF32D22, showed 50–63% longer lateral root length and 36–53% greater root biomass in N-rich regions under hydroponic conditions, while the LY13 genotype did not respond to N. Under field conditions, the root length of the high-response genotypes was found to increase by 66–75% at 40–60 cm soil depth, while LY13 showed smaller changes in root length. In addition, local N application increased N uptake at the post-silking stage by 16–88% in the high-response genotypes and increased the grain yield of ZD958 by 10–12%. Moreover, yield was positively correlated with root length at 40–60 cm soil depth (r=0.39). We conclude that local fertilization should be used for high-response genotypes, which can be rapidly identified at the seedling stage, and selection for “local-N responsive roots” can be a promising trait in maize breeding for high nitrogen uptake efficiency. |
| first_indexed | 2024-04-11T00:53:20Z |
| format | Article |
| id | doaj.art-761f5c5df61048f1a0850ccd7f62ae1d |
| institution | Directory Open Access Journal |
| issn | 2095-3119 |
| language | English |
| last_indexed | 2024-04-11T00:53:20Z |
| publishDate | 2023-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Integrative Agriculture |
| spelling | doaj.art-761f5c5df61048f1a0850ccd7f62ae1d2023-01-05T08:36:26ZengElsevierJournal of Integrative Agriculture2095-31192023-01-01221235250Local nitrogen application increases maize post-silking nitrogen uptake of responsive genotypes via enhanced deep root growthZhe CHEN0Wei REN1Xia YI2Qiang LI3Hong-guang CAI4Farhan ALI5Li-xing YUAN6Guo-hua MI7Qing-chun PAN8Fan-jun CHEN9College of Resources and Environmental Sciences/National Academy of Agriculture Green Development/Key Laboratory of Plant-Soil Interactions, Ministry of Education, China Agricultural University, Beijing 100193, P.R.ChinaCollege of Resources and Environmental Sciences/National Academy of Agriculture Green Development/Key Laboratory of Plant-Soil Interactions, Ministry of Education, China Agricultural University, Beijing 100193, P.R.ChinaCollege of Resources and Environmental Sciences/National Academy of Agriculture Green Development/Key Laboratory of Plant-Soil Interactions, Ministry of Education, China Agricultural University, Beijing 100193, P.R.ChinaSanya Institute of China Agricultural University, Sanya 572025, P.R.ChinaInstitute of Agricultural Resource and Environment, Jilin Academy of Agricultural Sciences, Changchun 130033, P.R.ChinaCereal Crops Research Institute, Pirsabak Nowshera 24110, PakistanCollege of Resources and Environmental Sciences/National Academy of Agriculture Green Development/Key Laboratory of Plant-Soil Interactions, Ministry of Education, China Agricultural University, Beijing 100193, P.R.ChinaCollege of Resources and Environmental Sciences/National Academy of Agriculture Green Development/Key Laboratory of Plant-Soil Interactions, Ministry of Education, China Agricultural University, Beijing 100193, P.R.ChinaCollege of Resources and Environmental Sciences/National Academy of Agriculture Green Development/Key Laboratory of Plant-Soil Interactions, Ministry of Education, China Agricultural University, Beijing 100193, P.R.ChinaCollege of Resources and Environmental Sciences/National Academy of Agriculture Green Development/Key Laboratory of Plant-Soil Interactions, Ministry of Education, China Agricultural University, Beijing 100193, P.R.China; Sanya Institute of China Agricultural University, Sanya 572025, P.R.China; Correspondence CHEN Fan-jun, Tel: +86-10-62734454Nitrogen (N) is unevenly distributed throughout the soil and plant roots proliferate in N-rich soil patches. However, the relationship between the root response to localized N supply and maize N uptake efficiency among different genotypes is unclear. In this study, four maize varieties were evaluated to explore genotypic differences in the root response to local N application in relation to N uptake. A split-root system was established for hydroponically-grown plants and two methods of local N application (local banding and local dotting) were examined in the field. Genotypic differences in the root length response to N were highly correlated between the hydroponic and field conditions (r>0.99). Genotypes showing high response to N, ZD958, XY335 and XF32D22, showed 50–63% longer lateral root length and 36–53% greater root biomass in N-rich regions under hydroponic conditions, while the LY13 genotype did not respond to N. Under field conditions, the root length of the high-response genotypes was found to increase by 66–75% at 40–60 cm soil depth, while LY13 showed smaller changes in root length. In addition, local N application increased N uptake at the post-silking stage by 16–88% in the high-response genotypes and increased the grain yield of ZD958 by 10–12%. Moreover, yield was positively correlated with root length at 40–60 cm soil depth (r=0.39). We conclude that local fertilization should be used for high-response genotypes, which can be rapidly identified at the seedling stage, and selection for “local-N responsive roots” can be a promising trait in maize breeding for high nitrogen uptake efficiency.http://www.sciencedirect.com/science/article/pii/S2095311922000120genotypic differencelocal nitrogenmaizenitrogen efficientroot |
| spellingShingle | Zhe CHEN Wei REN Xia YI Qiang LI Hong-guang CAI Farhan ALI Li-xing YUAN Guo-hua MI Qing-chun PAN Fan-jun CHEN Local nitrogen application increases maize post-silking nitrogen uptake of responsive genotypes via enhanced deep root growth Journal of Integrative Agriculture genotypic difference local nitrogen maize nitrogen efficient root |
| title | Local nitrogen application increases maize post-silking nitrogen uptake of responsive genotypes via enhanced deep root growth |
| title_full | Local nitrogen application increases maize post-silking nitrogen uptake of responsive genotypes via enhanced deep root growth |
| title_fullStr | Local nitrogen application increases maize post-silking nitrogen uptake of responsive genotypes via enhanced deep root growth |
| title_full_unstemmed | Local nitrogen application increases maize post-silking nitrogen uptake of responsive genotypes via enhanced deep root growth |
| title_short | Local nitrogen application increases maize post-silking nitrogen uptake of responsive genotypes via enhanced deep root growth |
| title_sort | local nitrogen application increases maize post silking nitrogen uptake of responsive genotypes via enhanced deep root growth |
| topic | genotypic difference local nitrogen maize nitrogen efficient root |
| url | http://www.sciencedirect.com/science/article/pii/S2095311922000120 |
| work_keys_str_mv | AT zhechen localnitrogenapplicationincreasesmaizepostsilkingnitrogenuptakeofresponsivegenotypesviaenhanceddeeprootgrowth AT weiren localnitrogenapplicationincreasesmaizepostsilkingnitrogenuptakeofresponsivegenotypesviaenhanceddeeprootgrowth AT xiayi localnitrogenapplicationincreasesmaizepostsilkingnitrogenuptakeofresponsivegenotypesviaenhanceddeeprootgrowth AT qiangli localnitrogenapplicationincreasesmaizepostsilkingnitrogenuptakeofresponsivegenotypesviaenhanceddeeprootgrowth AT hongguangcai localnitrogenapplicationincreasesmaizepostsilkingnitrogenuptakeofresponsivegenotypesviaenhanceddeeprootgrowth AT farhanali localnitrogenapplicationincreasesmaizepostsilkingnitrogenuptakeofresponsivegenotypesviaenhanceddeeprootgrowth AT lixingyuan localnitrogenapplicationincreasesmaizepostsilkingnitrogenuptakeofresponsivegenotypesviaenhanceddeeprootgrowth AT guohuami localnitrogenapplicationincreasesmaizepostsilkingnitrogenuptakeofresponsivegenotypesviaenhanceddeeprootgrowth AT qingchunpan localnitrogenapplicationincreasesmaizepostsilkingnitrogenuptakeofresponsivegenotypesviaenhanceddeeprootgrowth AT fanjunchen localnitrogenapplicationincreasesmaizepostsilkingnitrogenuptakeofresponsivegenotypesviaenhanceddeeprootgrowth |