Post-silking leaf senescence is delayed in low-N-tolerant maize cultivars under low N fertilization
A four-year field experiment was conducted with two cultivars and four N rate to investigate the spatio-temporal characteristics of leaf senescence in maize after silking and its response to N fertilizer rates on them, as well as to reveal the differences in post-silking chlorophyll degradation betw...
Saved in:
| Main Authors: | , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
KeAi Communications Co., Ltd.
2025-02-01
|
| Series: | Crop Journal |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214514124002587 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1849706065258610688 |
|---|---|
| author | Gui Wei Xinglong Wang Yawei Wu Fan Liu Tianqiong Lan Qinlin Liu Chengcheng Lyu Fanlei Kong Jichao Yuan |
| author_facet | Gui Wei Xinglong Wang Yawei Wu Fan Liu Tianqiong Lan Qinlin Liu Chengcheng Lyu Fanlei Kong Jichao Yuan |
| author_sort | Gui Wei |
| collection | DOAJ |
| description | A four-year field experiment was conducted with two cultivars and four N rate to investigate the spatio-temporal characteristics of leaf senescence in maize after silking and its response to N fertilizer rates on them, as well as to reveal the differences in post-silking chlorophyll degradation between low-N-tolerant cultivars. The results showed that the order of leaf senescence after silking in maize was lower leaf > upper leaf > ear leaf, leaf tip > middle > base. Increasing N fertilizer down-regulated the expression of ZmCLH2 and ZmPPH in the leaves at 10–30 d after silking, reducing CLH and PPH activities, thereby delaying the leaf senescence. These effects were more prominent in low-N-sensitive cultivar Xianyu 508 (XY508) than in low-N-tolerant cultivar Zhenghong 311 (ZH311), especially in the lower leaves and leaf tip. Under low N condition, leaf yellowing and chlorophyll degradation occurred later and slower in ZH311 than in XY508. This resulted in a higher post-silking dry matter accumulation and grain yield in ZH311, which may be one of the important physiological bases of low nitrogen tolerant cultivars. Future research should focus on developing low-N-tolerant maize cultivars with slower leaf senescence near the ear after silking. |
| format | Article |
| id | doaj-art-e190b1cb7c024eda9c554a53cc90a805 |
| institution | DOAJ |
| issn | 2214-5141 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Crop Journal |
| spelling | doaj-art-e190b1cb7c024eda9c554a53cc90a8052025-08-20T03:16:18ZengKeAi Communications Co., Ltd.Crop Journal2214-51412025-02-0113124625610.1016/j.cj.2024.11.010Post-silking leaf senescence is delayed in low-N-tolerant maize cultivars under low N fertilizationGui Wei0Xinglong Wang1Yawei Wu2Fan Liu3Tianqiong Lan4Qinlin Liu5Chengcheng Lyu6Fanlei Kong7Jichao Yuan8College of Agronomy, Sichuan Agricultural University, Chengdu 611130, Sichuan, China; Key Laboratory of Crop Ecophysiology and Farming System in Southwest China, Ministry of Agriculture, Chengdu 611130, Sichuan, China; Crop Ecophysiology and Cultivation Key Laboratory of Sichuan Province, Chengdu 611130, Sichuan, ChinaCollege of Agronomy, Sichuan Agricultural University, Chengdu 611130, Sichuan, China; Key Laboratory of Crop Ecophysiology and Farming System in Southwest China, Ministry of Agriculture, Chengdu 611130, Sichuan, China; Crop Ecophysiology and Cultivation Key Laboratory of Sichuan Province, Chengdu 611130, Sichuan, ChinaCollege of Agronomy, Sichuan Agricultural University, Chengdu 611130, Sichuan, China; Key Laboratory of Crop Ecophysiology and Farming System in Southwest China, Ministry of Agriculture, Chengdu 611130, Sichuan, China; Crop Ecophysiology and Cultivation Key Laboratory of Sichuan Province, Chengdu 611130, Sichuan, ChinaCollege of Agronomy, Sichuan Agricultural University, Chengdu 611130, Sichuan, China; Key Laboratory of Crop Ecophysiology and Farming System in Southwest China, Ministry of Agriculture, Chengdu 611130, Sichuan, China; Crop Ecophysiology and Cultivation Key Laboratory of Sichuan Province, Chengdu 611130, Sichuan, ChinaCollege of Agronomy, Sichuan Agricultural University, Chengdu 611130, Sichuan, China; Key Laboratory of Crop Ecophysiology and Farming System in Southwest China, Ministry of Agriculture, Chengdu 611130, Sichuan, China; Crop Ecophysiology and Cultivation Key Laboratory of Sichuan Province, Chengdu 611130, Sichuan, ChinaCollege of Agronomy, Sichuan Agricultural University, Chengdu 611130, Sichuan, China; Key Laboratory of Crop Ecophysiology and Farming System in Southwest China, Ministry of Agriculture, Chengdu 611130, Sichuan, China; Crop Ecophysiology and Cultivation Key Laboratory of Sichuan Province, Chengdu 611130, Sichuan, ChinaCollege of Agronomy, Sichuan Agricultural University, Chengdu 611130, Sichuan, China; Key Laboratory of Crop Ecophysiology and Farming System in Southwest China, Ministry of Agriculture, Chengdu 611130, Sichuan, China; Crop Ecophysiology and Cultivation Key Laboratory of Sichuan Province, Chengdu 611130, Sichuan, ChinaCollege of Agronomy, Sichuan Agricultural University, Chengdu 611130, Sichuan, China; Key Laboratory of Crop Ecophysiology and Farming System in Southwest China, Ministry of Agriculture, Chengdu 611130, Sichuan, China; Crop Ecophysiology and Cultivation Key Laboratory of Sichuan Province, Chengdu 611130, Sichuan, China; Corresponding authors.College of Agronomy, Sichuan Agricultural University, Chengdu 611130, Sichuan, China; Key Laboratory of Crop Ecophysiology and Farming System in Southwest China, Ministry of Agriculture, Chengdu 611130, Sichuan, China; Crop Ecophysiology and Cultivation Key Laboratory of Sichuan Province, Chengdu 611130, Sichuan, China; Corresponding authors.A four-year field experiment was conducted with two cultivars and four N rate to investigate the spatio-temporal characteristics of leaf senescence in maize after silking and its response to N fertilizer rates on them, as well as to reveal the differences in post-silking chlorophyll degradation between low-N-tolerant cultivars. The results showed that the order of leaf senescence after silking in maize was lower leaf > upper leaf > ear leaf, leaf tip > middle > base. Increasing N fertilizer down-regulated the expression of ZmCLH2 and ZmPPH in the leaves at 10–30 d after silking, reducing CLH and PPH activities, thereby delaying the leaf senescence. These effects were more prominent in low-N-sensitive cultivar Xianyu 508 (XY508) than in low-N-tolerant cultivar Zhenghong 311 (ZH311), especially in the lower leaves and leaf tip. Under low N condition, leaf yellowing and chlorophyll degradation occurred later and slower in ZH311 than in XY508. This resulted in a higher post-silking dry matter accumulation and grain yield in ZH311, which may be one of the important physiological bases of low nitrogen tolerant cultivars. Future research should focus on developing low-N-tolerant maize cultivars with slower leaf senescence near the ear after silking.http://www.sciencedirect.com/science/article/pii/S2214514124002587Low-N-tolerant maize varietyNitrogen fertilizerSpatio-temporal characteristicsChlorophyll degradation |
| spellingShingle | Gui Wei Xinglong Wang Yawei Wu Fan Liu Tianqiong Lan Qinlin Liu Chengcheng Lyu Fanlei Kong Jichao Yuan Post-silking leaf senescence is delayed in low-N-tolerant maize cultivars under low N fertilization Crop Journal Low-N-tolerant maize variety Nitrogen fertilizer Spatio-temporal characteristics Chlorophyll degradation |
| title | Post-silking leaf senescence is delayed in low-N-tolerant maize cultivars under low N fertilization |
| title_full | Post-silking leaf senescence is delayed in low-N-tolerant maize cultivars under low N fertilization |
| title_fullStr | Post-silking leaf senescence is delayed in low-N-tolerant maize cultivars under low N fertilization |
| title_full_unstemmed | Post-silking leaf senescence is delayed in low-N-tolerant maize cultivars under low N fertilization |
| title_short | Post-silking leaf senescence is delayed in low-N-tolerant maize cultivars under low N fertilization |
| title_sort | post silking leaf senescence is delayed in low n tolerant maize cultivars under low n fertilization |
| topic | Low-N-tolerant maize variety Nitrogen fertilizer Spatio-temporal characteristics Chlorophyll degradation |
| url | http://www.sciencedirect.com/science/article/pii/S2214514124002587 |
| work_keys_str_mv | AT guiwei postsilkingleafsenescenceisdelayedinlowntolerantmaizecultivarsunderlownfertilization AT xinglongwang postsilkingleafsenescenceisdelayedinlowntolerantmaizecultivarsunderlownfertilization AT yaweiwu postsilkingleafsenescenceisdelayedinlowntolerantmaizecultivarsunderlownfertilization AT fanliu postsilkingleafsenescenceisdelayedinlowntolerantmaizecultivarsunderlownfertilization AT tianqionglan postsilkingleafsenescenceisdelayedinlowntolerantmaizecultivarsunderlownfertilization AT qinlinliu postsilkingleafsenescenceisdelayedinlowntolerantmaizecultivarsunderlownfertilization AT chengchenglyu postsilkingleafsenescenceisdelayedinlowntolerantmaizecultivarsunderlownfertilization AT fanleikong postsilkingleafsenescenceisdelayedinlowntolerantmaizecultivarsunderlownfertilization AT jichaoyuan postsilkingleafsenescenceisdelayedinlowntolerantmaizecultivarsunderlownfertilization |