兰州大学机构库
Leaf senescence, nitrogen remobilization, and productivity of maize in two semiarid intercropping systems
Wang, Wei1; Li, Meng-Ying1; Zhou, Rui2; Mo, Fei3; Khan, Aziz1; Batool, Asfa1; Zhang, Wei1; Lu, Jun-Sheng1; Zhu, Ying4; Wang, Bao-Zhong1; Yang, Yu-Miao1; Wang, Jing1; Tao, Xiu-Ping5; Xiong, You-Cai1,5
2023-10
Online publication date2023-08
Source PublicationEUROPEAN JOURNAL OF AGRONOMY   Impact Factor & Quartile
ISSN1161-0301 ; 1873-7331
Volume150
page numbers13
AbstractIt is unclear how interspecific resource competition affects crop leaf senescence in association with nitrogen (N) remobilization and overyielding in semiarid intercropping systems. To address this issue, maize intercropped with soybean (weakly competitive species) and wheat (strongly competitive species) was examined across three consecutive years to explore the effects of resource competition on maize relative and absolute yield gain, leaf senescence traits, N remobilization and physiological activities in a typical semiarid site. High yield (171.8 g plant-1), relative yield (0.63) and net effect (0.99 t ha-1) of maize were observed in the maize-soybean intercropping system, while the opposite trend was found in the maize-wheat intercropping systems. Overall, maize benefited from intercropping with soybean but was negatively affected by intercropping with wheat. Interestingly, both intercropping systems significantly delayed the onset time of maize leaf senescence by approximately 5-20 days and prolonged the senescence duration by approximately 8-18 days. Intercropping with soybean increased maize leaf dry matter remobilization from 7.3 to 12.5 g per plant-1 and reduced N remobilization from 0.81 to 0.45 g plant-1, respectively. However, when intercropped with wheat, dry matter and N remobilization of maize leaves were decreased, at 4.8 and 0.13 g plant-1, respectively. Therefore, excessive delay and prolonged leaf senescence reduced leaf dry matter translocation and N to the grain which impaired yield formation. Our findings provided novel insights into the physiological mechanism of overyielding from the perspective of leaf senescence traits and remobilization function in the semiarid intercropping systems.
KeywordPlant interaction Leaf senescence Intercropping Remobilization efficiency Resource competition
PublisherELSEVIER
DOI10.1016/j.eja.2023.126943
Indexed BySCIE
Language英语
WOS Research AreaAgriculture
WOS SubjectAgronomy
WOS IDWOS:001059651900001
Original Document TypeArticle
Citation statistics
Document Type期刊论文
Identifierhttps://ir.lzu.edu.cn/handle/262010/568392
Collection兰州大学
Corresponding AuthorTao, Xiu-Ping; Xiong, You-Cai
Affiliation
1.Lanzhou Univ, Coll Ecol, State Key Lab Herbage Improvement & Grassland Agro, Lanzhou 730000, Peoples R China;
2.Yunnan Univ, Sch Ecol & Environm Sci, Kunming 650500, Peoples R China;
3.Northwest A&F Univ, Coll Agron, Yangling 712100, Peoples R China;
4.Gansu Acad Sci, Inst Biol, Key Lab Microbial Resources Exploitat & Applicat G, Lanzhou 730000, Peoples R China;
5.Chinese Acad Agr Sci, Inst Urban Agr, Chengdu 610213, Peoples R China
Recommended Citation
GB/T 7714
Wang, Wei,Li, Meng-Ying,Zhou, Rui,et al. Leaf senescence, nitrogen remobilization, and productivity of maize in two semiarid intercropping systems[J]. EUROPEAN JOURNAL OF AGRONOMY,2023,150.
APA Wang, Wei.,Li, Meng-Ying.,Zhou, Rui.,Mo, Fei.,Khan, Aziz.,...&Xiong, You-Cai.(2023).Leaf senescence, nitrogen remobilization, and productivity of maize in two semiarid intercropping systems.EUROPEAN JOURNAL OF AGRONOMY,150.
MLA Wang, Wei,et al."Leaf senescence, nitrogen remobilization, and productivity of maize in two semiarid intercropping systems".EUROPEAN JOURNAL OF AGRONOMY 150(2023).
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