Source-sink relationship and yield stability of two maize cultivars in response to water and fertilizer inputs in northwest China

doi:10.1016/j.agwat.2021.107332

	Source-sink relationship and yield stability of two maize cultivars in response to water and fertilizer inputs in northwest China
	Yan, Shicheng 1,2; Wu, You 3; Fan, Junliang 2; Zhang, Fucang 2; Zheng, Jing 2; Guo, Jinjin 2; Lu, Junsheng 2; Wu, Lifeng 4; Qiang, Shengcai 5; Xiang, Youzhen 2
	2022-03-31
发表期刊	Agricultural Water Management
ISSN	0378-3774
卷号	262
摘要	Increasing the capacity of plants to assimilate carbon (source), or to tap into the internal carbon reservoir (sink), has the potential of realizing high and stable yield under a more variable climate. A three-year field experiment was conducted to explore the source-sink relationships of two maize (Zea mays L.) cultivars in response to various water and fertilizer inputs, and evaluate the yield sustainability in northwest China. There were two fertilization rates (unfertilized, F0; fertilized, F1), two irrigation strategies (rainfed, RF; supplemental drip irrigation, DI) and two maize cultivars (ZD958 and QL14). The results showed that the newly released maize cultivar (QL14) had higher leaf chlorophyll content at the silking and grain-filling stages than the old one (ZD958); meanwhile, QL14 had higher root dry matter at maturity than ZD958 under DIF1. The aboveground and root dry matter increased with the amount of water and fertilizer, while the root-shoot ratio decreased. Cultivar significantly affected the vegetative organ dry matter partitioning, especially under severe drought at the silking stage. QL14 had stronger root system and larger leaf dry matter than ZD958, and was more drought-resistant under serious water-stressed conditions. Dry matter translocation (DMT) was crucial for grain yield formation under limited nutrients conditions, and ~55% of total dry matter at maturity was accumulated at the grain-filling stage under adequate water and fertilizer conditions. DIF1 had higher sustainable yield index (SYI) than RFF1. There was no significant difference in grain yield between the two maize cultivars under DIF1, but the average SYI of QL14 (0.94) was greater than that of ZD958 (0.89). The present study indicates that the newly released maize cultivar (QL14) with stronger root system and stay-green characteristics is beneficial for increasing drought resistance and keeping yield stable in the semi-humid and drought-prone region of northwest China. © 2021 Elsevier B.V.
关键词	Carbon Chlorophyll Fertilizers Grain (agricultural product) Irrigation Plants (botany) Reservoirs (water) Filling stage Grain filling G×E×M Leaf chlorophyll content Maize cultivars NorthWest China Root dry matter Source-sink relationships Supplemental irrigation Sustainable yield indices
DOI	10.1016/j.agwat.2021.107332
收录类别	EI ; SCIE
语种	英语
WOS研究方向	Agriculture ; Water Resources
WOS类目	Agronomy ; Water Resources
WOS记录号	WOS:000788786100002
出版者	Elsevier B.V.
EI入藏号	20214711188072
EI主题词	Drought
EI分类号	441.2 Reservoirs ; 443.3 Precipitation ; 444 Water Resources ; 804 Chemical Products Generally ; 804.1 Organic Compounds ; 821.2 Agricultural Chemicals ; 821.3 Agricultural Methods ; 821.4 Agricultural Products
来源库	WOS
引用统计	被引频次：5[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/157843
专题	兰州理工大学
通讯作者	Fan, Junliang
作者单位	1.Lanzhou Univ, Coll Pastoral Agr Sci & Technol, Lanzhou 730020, Peoples R China; 2.Northwest A&F Univ, Key Lab Agr Soil & Water Engn Arid & Semiarid Are, Minist Educ, Yangling 712100, Shaanxi, Peoples R China; 3.Lanzhou Univ Technol, Coll Energy & Power Engn, Lanzhou 730050, Peoples R China; 4.Nanchang Inst Technol, Sch Hydraul & Ecol Engn, Nanchang 330099, Jiangxi, Peoples R China; 5.Shanxi Agr Univ, Coll Urban & Rural Construct, Taigu 030801, Shanxi, Peoples R China
推荐引用方式 GB/T 7714	Yan, Shicheng,Wu, You,Fan, Junliang,et al. Source-sink relationship and yield stability of two maize cultivars in response to water and fertilizer inputs in northwest China[J]. Agricultural Water Management,2022,262.
APA	Yan, Shicheng.,Wu, You.,Fan, Junliang.,Zhang, Fucang.,Zheng, Jing.,...&Xiang, Youzhen.(2022).Source-sink relationship and yield stability of two maize cultivars in response to water and fertilizer inputs in northwest China.Agricultural Water Management,262.
MLA	Yan, Shicheng,et al."Source-sink relationship and yield stability of two maize cultivars in response to water and fertilizer inputs in northwest China".Agricultural Water Management 262(2022).