Top-dressing nitrogen fertilizer rate contributes to decrease culm physical strength by reducing structural carbohydrate content in japonica rice
Lodging is an important factor limiting rice yield and quality by bending or breaking stem in japonica rice (Oryza sativa L.) production. The objectives of this study were to determine the mechanism of lodging resistance in japonica rice as affected by carbohydrate components, especially its related...
Saved in:
| Main Authors: | , , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
KeAi Communications Co., Ltd.
2016-05-01
|
| Series: | Journal of Integrative Agriculture |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2095311915611662 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1849251125051523072 |
|---|---|
| author | Wu-jun ZHANG Long-mei WU Yan-feng DING Fei WENG Xiao-ran WU Gang-hua LI Zheng-hui LIU She TANG Cheng-qiang DING Shao-hua WANG |
| author_facet | Wu-jun ZHANG Long-mei WU Yan-feng DING Fei WENG Xiao-ran WU Gang-hua LI Zheng-hui LIU She TANG Cheng-qiang DING Shao-hua WANG |
| author_sort | Wu-jun ZHANG |
| collection | DOAJ |
| description | Lodging is an important factor limiting rice yield and quality by bending or breaking stem in japonica rice (Oryza sativa L.) production. The objectives of this study were to determine the mechanism of lodging resistance in japonica rice as affected by carbohydrate components, especially its related arrangement in culm tissue and response to top-dressing nitrogen (N) fertilizer. Field experiments were conducted in Danyang County, Jiangsu Province, China, by using two japonica rice varieties Wuyunjing 23 (lodging-resistance variety) and W3668 (lodging-susceptible variety) with three top-dressing N fertilizer rates (0, 135 and 270 kg N ha−1) in 2013 and 2014. Lodging related physical parameters, morphological characteristics and stem carbohydrate components were investigated at 30 d after full heading stage. Results showed that with increasing N fertilizer rates, the lodging rate and lodging index increased rapidly primarily due to significant reduction of breaking strength in two japonica rice varieties. Correlation analysis revealed that breaking strength was significantly and positively correlated with bending stress, but negatively correlated with section modulus, except for significant correlation at W3668 in 2014. Higher stem plumpness status and structural carbohydrate contents significantly enhanced stem stiffness, despite of lower non-structural carbohydrate. With higher N fertilizer rate, the culm wall thickness was almost identical, and culm diameter increased slightly. The structural carbohydrates, especially for lignin content in culm, reduced significantly under high N rate. Further histochemical staining analysis revealed that high N treatments decreased the lignin deposition rapidly in the sclerenchyma cells of mechanical tissue, large vascular bundle and small vascular bundle region, which were consistent with reduction of bending stress, especially for W3668 and thus, resulted in poor stem strength and higher lodging index. These results suggested that structural carbohydrate plays a vital role for improving stem strength in japonica rice. N rate decreased lodging resistance primarily due to poor stem stiffness, by reducing structural carbohydrate content and lignin deposition in the secondary cell wall of lower internode culm tissue. |
| format | Article |
| id | doaj-art-787fdc9d048e4b39862a7121f036eac6 |
| institution | Kabale University |
| issn | 2095-3119 |
| language | English |
| publishDate | 2016-05-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Journal of Integrative Agriculture |
| spelling | doaj-art-787fdc9d048e4b39862a7121f036eac62025-08-20T03:57:03ZengKeAi Communications Co., Ltd.Journal of Integrative Agriculture2095-31192016-05-01155992100410.1016/S2095-3119(15)61166-2Top-dressing nitrogen fertilizer rate contributes to decrease culm physical strength by reducing structural carbohydrate content in japonica riceWu-jun ZHANG0Long-mei WU1Yan-feng DING2Fei WENG3Xiao-ran WU4Gang-hua LI5Zheng-hui LIU6She TANG7Cheng-qiang DING8Shao-hua WANG9Jiangsu Collaborative Innovation Center for Modern Crop Production/Jiangsu Key Laboratory for Information Agriculture/National Engineering and Technology Center for Information Agriculture/Key Laboratory of Crop Physiology and Ecology in Southern China, Nanjing Agricultural University, Nanjing 210095, P.R.ChinaJiangsu Collaborative Innovation Center for Modern Crop Production/Jiangsu Key Laboratory for Information Agriculture/National Engineering and Technology Center for Information Agriculture/Key Laboratory of Crop Physiology and Ecology in Southern China, Nanjing Agricultural University, Nanjing 210095, P.R.ChinaJiangsu Collaborative Innovation Center for Modern Crop Production/Jiangsu Key Laboratory for Information Agriculture/National Engineering and Technology Center for Information Agriculture/Key Laboratory of Crop Physiology and Ecology in Southern China, Nanjing Agricultural University, Nanjing 210095, P.R.ChinaJiangsu Collaborative Innovation Center for Modern Crop Production/Jiangsu Key Laboratory for Information Agriculture/National Engineering and Technology Center for Information Agriculture/Key Laboratory of Crop Physiology and Ecology in Southern China, Nanjing Agricultural University, Nanjing 210095, P.R.ChinaJiangsu Collaborative Innovation Center for Modern Crop Production/Jiangsu Key Laboratory for Information Agriculture/National Engineering and Technology Center for Information Agriculture/Key Laboratory of Crop Physiology and Ecology in Southern China, Nanjing Agricultural University, Nanjing 210095, P.R.ChinaCorrespondence LI Gang-hua, Tel/Fax: +86-25-84396475; Jiangsu Collaborative Innovation Center for Modern Crop Production/Jiangsu Key Laboratory for Information Agriculture/National Engineering and Technology Center for Information Agriculture/Key Laboratory of Crop Physiology and Ecology in Southern China, Nanjing Agricultural University, Nanjing 210095, P.R.ChinaJiangsu Collaborative Innovation Center for Modern Crop Production/Jiangsu Key Laboratory for Information Agriculture/National Engineering and Technology Center for Information Agriculture/Key Laboratory of Crop Physiology and Ecology in Southern China, Nanjing Agricultural University, Nanjing 210095, P.R.ChinaJiangsu Collaborative Innovation Center for Modern Crop Production/Jiangsu Key Laboratory for Information Agriculture/National Engineering and Technology Center for Information Agriculture/Key Laboratory of Crop Physiology and Ecology in Southern China, Nanjing Agricultural University, Nanjing 210095, P.R.ChinaJiangsu Collaborative Innovation Center for Modern Crop Production/Jiangsu Key Laboratory for Information Agriculture/National Engineering and Technology Center for Information Agriculture/Key Laboratory of Crop Physiology and Ecology in Southern China, Nanjing Agricultural University, Nanjing 210095, P.R.ChinaJiangsu Collaborative Innovation Center for Modern Crop Production/Jiangsu Key Laboratory for Information Agriculture/National Engineering and Technology Center for Information Agriculture/Key Laboratory of Crop Physiology and Ecology in Southern China, Nanjing Agricultural University, Nanjing 210095, P.R.ChinaLodging is an important factor limiting rice yield and quality by bending or breaking stem in japonica rice (Oryza sativa L.) production. The objectives of this study were to determine the mechanism of lodging resistance in japonica rice as affected by carbohydrate components, especially its related arrangement in culm tissue and response to top-dressing nitrogen (N) fertilizer. Field experiments were conducted in Danyang County, Jiangsu Province, China, by using two japonica rice varieties Wuyunjing 23 (lodging-resistance variety) and W3668 (lodging-susceptible variety) with three top-dressing N fertilizer rates (0, 135 and 270 kg N ha−1) in 2013 and 2014. Lodging related physical parameters, morphological characteristics and stem carbohydrate components were investigated at 30 d after full heading stage. Results showed that with increasing N fertilizer rates, the lodging rate and lodging index increased rapidly primarily due to significant reduction of breaking strength in two japonica rice varieties. Correlation analysis revealed that breaking strength was significantly and positively correlated with bending stress, but negatively correlated with section modulus, except for significant correlation at W3668 in 2014. Higher stem plumpness status and structural carbohydrate contents significantly enhanced stem stiffness, despite of lower non-structural carbohydrate. With higher N fertilizer rate, the culm wall thickness was almost identical, and culm diameter increased slightly. The structural carbohydrates, especially for lignin content in culm, reduced significantly under high N rate. Further histochemical staining analysis revealed that high N treatments decreased the lignin deposition rapidly in the sclerenchyma cells of mechanical tissue, large vascular bundle and small vascular bundle region, which were consistent with reduction of bending stress, especially for W3668 and thus, resulted in poor stem strength and higher lodging index. These results suggested that structural carbohydrate plays a vital role for improving stem strength in japonica rice. N rate decreased lodging resistance primarily due to poor stem stiffness, by reducing structural carbohydrate content and lignin deposition in the secondary cell wall of lower internode culm tissue.http://www.sciencedirect.com/science/article/pii/S2095311915611662japonica ricelodging resistancenitrogenstem strengthstructural carbohydrate |
| spellingShingle | Wu-jun ZHANG Long-mei WU Yan-feng DING Fei WENG Xiao-ran WU Gang-hua LI Zheng-hui LIU She TANG Cheng-qiang DING Shao-hua WANG Top-dressing nitrogen fertilizer rate contributes to decrease culm physical strength by reducing structural carbohydrate content in japonica rice Journal of Integrative Agriculture japonica rice lodging resistance nitrogen stem strength structural carbohydrate |
| title | Top-dressing nitrogen fertilizer rate contributes to decrease culm physical strength by reducing structural carbohydrate content in japonica rice |
| title_full | Top-dressing nitrogen fertilizer rate contributes to decrease culm physical strength by reducing structural carbohydrate content in japonica rice |
| title_fullStr | Top-dressing nitrogen fertilizer rate contributes to decrease culm physical strength by reducing structural carbohydrate content in japonica rice |
| title_full_unstemmed | Top-dressing nitrogen fertilizer rate contributes to decrease culm physical strength by reducing structural carbohydrate content in japonica rice |
| title_short | Top-dressing nitrogen fertilizer rate contributes to decrease culm physical strength by reducing structural carbohydrate content in japonica rice |
| title_sort | top dressing nitrogen fertilizer rate contributes to decrease culm physical strength by reducing structural carbohydrate content in japonica rice |
| topic | japonica rice lodging resistance nitrogen stem strength structural carbohydrate |
| url | http://www.sciencedirect.com/science/article/pii/S2095311915611662 |
| work_keys_str_mv | AT wujunzhang topdressingnitrogenfertilizerratecontributestodecreaseculmphysicalstrengthbyreducingstructuralcarbohydratecontentinjaponicarice AT longmeiwu topdressingnitrogenfertilizerratecontributestodecreaseculmphysicalstrengthbyreducingstructuralcarbohydratecontentinjaponicarice AT yanfengding topdressingnitrogenfertilizerratecontributestodecreaseculmphysicalstrengthbyreducingstructuralcarbohydratecontentinjaponicarice AT feiweng topdressingnitrogenfertilizerratecontributestodecreaseculmphysicalstrengthbyreducingstructuralcarbohydratecontentinjaponicarice AT xiaoranwu topdressingnitrogenfertilizerratecontributestodecreaseculmphysicalstrengthbyreducingstructuralcarbohydratecontentinjaponicarice AT ganghuali topdressingnitrogenfertilizerratecontributestodecreaseculmphysicalstrengthbyreducingstructuralcarbohydratecontentinjaponicarice AT zhenghuiliu topdressingnitrogenfertilizerratecontributestodecreaseculmphysicalstrengthbyreducingstructuralcarbohydratecontentinjaponicarice AT shetang topdressingnitrogenfertilizerratecontributestodecreaseculmphysicalstrengthbyreducingstructuralcarbohydratecontentinjaponicarice AT chengqiangding topdressingnitrogenfertilizerratecontributestodecreaseculmphysicalstrengthbyreducingstructuralcarbohydratecontentinjaponicarice AT shaohuawang topdressingnitrogenfertilizerratecontributestodecreaseculmphysicalstrengthbyreducingstructuralcarbohydratecontentinjaponicarice |