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[Effects of postponing nitrogen application on photosynthetic characteristics and grain yield of winter wheat subjected to water stress after heading stage].
Ying Yong Sheng Tai Xue Bao 2015; 26(11):3315-21YY

Abstract

A pot culture experiment was conducted to study the effects of postponing nitrogen (N) application on photosynthetic characteristics and grain yield of winter wheat subjected to water stress after heading stage. Equal in the total N rate in winter wheat growth season, N application was split before sowing, and/or at jointing and /or at anthesis at the ratio of 10:0:0 (N1), 6:4:0 (N2) and 4:3:3 (N3), combined with unfavorable water condition (either waterlogged or drought) with the sufficient water condition as control. The results showed that, under each of the water condition, both N2 and N3 treatments significantly improved the leaf photosynthetic rate and the SPAD value of flag leaf compared with N1 treatment during grain filling stage, and also the crop ear number, grain number per spike and above-ground biomass were increased. Although postponing nitrogen application increased water consumption, both grain yield and water use efficiency were increased. Compared with sufficient water supply, drought stress and waterlogging stress significantly reduced the photosynthetic rate of flag leaves at anthesis and grain filling stages, ear number, 1000-grain mass and yield under all of the N application patterns. The decline of photosynthetic rate under either drought stress or waterlogging stress was much less in N2 and N3 than in N1 treatments, just the same as the grain yield. The results indicated that postponing nitrogen application could regulate winter wheat yield as well as its components to alleviate the damages, caused by unfavorable water stress by increasing flag leaf SPAD and maintaining flag leaf photosynthetic rate after anthesis, and promoting above-ground dry matter accumulation.

Authors

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Pub Type(s)

Journal Article

Language

chi

PubMed ID

26915185

Citation

Yang, Ming-da, et al. "[Effects of Postponing Nitrogen Application On Photosynthetic Characteristics and Grain Yield of Winter Wheat Subjected to Water Stress After Heading Stage]." Ying Yong Sheng Tai Xue Bao = the Journal of Applied Ecology, vol. 26, no. 11, 2015, pp. 3315-21.
Yang MD, Ma SC, Yang SJ, et al. [Effects of postponing nitrogen application on photosynthetic characteristics and grain yield of winter wheat subjected to water stress after heading stage]. Ying Yong Sheng Tai Xue Bao. 2015;26(11):3315-21.
Yang, M. D., Ma, S. C., Yang, S. J., Zhang, S. Y., Guan, X. K., Li, X. M., ... Li, C. X. (2015). [Effects of postponing nitrogen application on photosynthetic characteristics and grain yield of winter wheat subjected to water stress after heading stage]. Ying Yong Sheng Tai Xue Bao = the Journal of Applied Ecology, 26(11), pp. 3315-21.
Yang MD, et al. [Effects of Postponing Nitrogen Application On Photosynthetic Characteristics and Grain Yield of Winter Wheat Subjected to Water Stress After Heading Stage]. Ying Yong Sheng Tai Xue Bao. 2015;26(11):3315-21. PubMed PMID: 26915185.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - [Effects of postponing nitrogen application on photosynthetic characteristics and grain yield of winter wheat subjected to water stress after heading stage]. AU - Yang,Ming-da, AU - Ma,Shou-chen, AU - Yang,Shen-jiao, AU - Zhang,Su-yu, AU - Guan,Xiao-kang, AU - Li,Xue-mei, AU - Wang,Tong-chao, AU - Li,Chun-xi, PY - 2016/2/27/entrez PY - 2016/2/27/pubmed PY - 2016/3/10/medline SP - 3315 EP - 21 JF - Ying yong sheng tai xue bao = The journal of applied ecology JO - Ying Yong Sheng Tai Xue Bao VL - 26 IS - 11 N2 - A pot culture experiment was conducted to study the effects of postponing nitrogen (N) application on photosynthetic characteristics and grain yield of winter wheat subjected to water stress after heading stage. Equal in the total N rate in winter wheat growth season, N application was split before sowing, and/or at jointing and /or at anthesis at the ratio of 10:0:0 (N1), 6:4:0 (N2) and 4:3:3 (N3), combined with unfavorable water condition (either waterlogged or drought) with the sufficient water condition as control. The results showed that, under each of the water condition, both N2 and N3 treatments significantly improved the leaf photosynthetic rate and the SPAD value of flag leaf compared with N1 treatment during grain filling stage, and also the crop ear number, grain number per spike and above-ground biomass were increased. Although postponing nitrogen application increased water consumption, both grain yield and water use efficiency were increased. Compared with sufficient water supply, drought stress and waterlogging stress significantly reduced the photosynthetic rate of flag leaves at anthesis and grain filling stages, ear number, 1000-grain mass and yield under all of the N application patterns. The decline of photosynthetic rate under either drought stress or waterlogging stress was much less in N2 and N3 than in N1 treatments, just the same as the grain yield. The results indicated that postponing nitrogen application could regulate winter wheat yield as well as its components to alleviate the damages, caused by unfavorable water stress by increasing flag leaf SPAD and maintaining flag leaf photosynthetic rate after anthesis, and promoting above-ground dry matter accumulation. SN - 1001-9332 UR - https://www.unboundmedicine.com/medline/citation/26915185/[Effects_of_postponing_nitrogen_application_on_photosynthetic_characteristics_and_grain_yield_of_winter_wheat_subjected_to_water_stress_after_heading_stage]_ DB - PRIME DP - Unbound Medicine ER -