Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.fcr.2009.06.001 |
Physiological determinants of maize and sunflower grain yield as affected by nitrogen supply | |
Massignam, A. M.1,3; Chapman, S. C.2; Hammer, G. L.3; Fukai, S.3 | |
通讯作者 | Massignam, A. M. |
来源期刊 | FIELD CROPS RESEARCH
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ISSN | 0378-4290 |
EISSN | 1872-6852 |
出版年 | 2009 |
卷号 | 113期号:3页码:256-267 |
英文摘要 | Utilisation of nitrogen (N) has been closely related to increases in crop productivity. However, not all crops respond similarly and the objective of this study is to identify physiological processes that determine responses to N supply for maize and sunflower. Grain yield in maize (range: 210-1255 g m(-2)) was greater and more responsive to N supply than in sunflower (1106-555 g m(-2) in carbohydrate equivalents) over a wide range of total N uptake (3->20 g N m(-2)). In maize, differences in grain yield among levels of N supply were associated more with variation in biomass than in harvest index. in sunflower, differences in grain yield (in carbohydrate equivalents) among levels of N supply were related similarly to variation in both biomass and harvest index. The decrease in biomass production with decreasing N supply was associated with decreases in both radiation interception and radiation use efficiency (RUE). Decreased interception was due to effects of N supply on reducing canopy leaf area, whereas the reduced RUE was associated with decreased SLN. Total biomass production in maize was more responsive to N supply than in sunflower. The major determinants of the differences in response of biomass accumulation to N supply found between maize and sunflower are: (i) sunflower tends to maintain SLN with increase in partitioning of N to leaves under N limitation whereas maize tends to maintain leaf area with increase in partitioning of biomass to leaves and (ii) the ability of maize to maintain N uptake following cessation of leaf production. (C) 2009 Elsevier B.V. All rights reserved. |
英文关键词 | Grain yield Biomass Radiation intercepted Nitrogen uptake Radiation use efficiency |
类型 | Article |
语种 | 英语 |
国家 | Brazil ; Australia |
收录类别 | SCI-E |
WOS记录号 | WOS:000269194000008 |
WOS关键词 | RADIATION-USE EFFICIENCY ; ARID TROPICAL ENVIRONMENT ; LEAF NITROGEN ; BIOMASS ACCUMULATION ; COMPARATIVE PRODUCTIVITY ; GROWTH ; SORGHUM ; PHOTOSYNTHESIS ; POPULATION |
WOS类目 | Agronomy |
WOS研究方向 | Agriculture |
来源机构 | Commonwealth Scientific and Industrial Research Organisation |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/160633 |
作者单位 | 1.Epagri Ciram, Florianopolis, SC, Brazil; 2.CSIRO Plant Ind, Queensland Biosci Precinct, St Lucia, Qld 4067, Australia; 3.Univ Queensland, Sch Land Crop & Food Sci, St Lucia, Qld 4067, Australia |
推荐引用方式 GB/T 7714 | Massignam, A. M.,Chapman, S. C.,Hammer, G. L.,et al. Physiological determinants of maize and sunflower grain yield as affected by nitrogen supply[J]. Commonwealth Scientific and Industrial Research Organisation,2009,113(3):256-267. |
APA | Massignam, A. M.,Chapman, S. C.,Hammer, G. L.,&Fukai, S..(2009).Physiological determinants of maize and sunflower grain yield as affected by nitrogen supply.FIELD CROPS RESEARCH,113(3),256-267. |
MLA | Massignam, A. M.,et al."Physiological determinants of maize and sunflower grain yield as affected by nitrogen supply".FIELD CROPS RESEARCH 113.3(2009):256-267. |
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