Siberian wildrye seed yield limited by assimilate source
文献类型：期刊论文
| 作者 | Wang, Mingya; Hou, Longyu3; Zhu, Yanqiao; Zhang, Qiang; Wang, Hui; Xia, Fangshan2; Chen, Lingling; Mao, Peisheng; Hannaway, David B. |
| 刊名 | FIELD CROPS RESEARCH
 |
| 出版日期 | 2018 |
| 卷号 | 218页码:18-23 |
| 关键词 | Siberian wildrye Half-spike Source-sink Seed weight Seed yield Dry matter N |
| ISSN号 | 0378-4290 |
| DOI | 10.1016/j.fcr.2017.12.022 |
| 文献子类 | Article |
| 英文摘要 | Siberian wildrye (Elymus sibiricus L.) is a cool-season, perennial bunchgrass widely used to increase forage production of semi-arid grasslands and to restore degraded lands. It is drought and cold tolerant, and has high yield potential and livestock acceptability. However, seed yield is low and variable and there is little information on the physiological processes limiting its seed yield. A split plot experiment was conducted to determine the effect of source-sink treatments under different nitrogen (N) applications on seed weight, seed setting rate, and dry matter and N remobilization during three successive growing seasons. The main plots were N level (0, 90, 180 kg N ha(-1)) and sub plots were source sink treatments (half trimmed and unaltered spikes). Leaf, stem, and spike dry weights and N concentration were measured at anthesis and seed physiological maturity, while seed weight and seed setting rate were measured at seed physiological maturity and milk stage respectively. Stem and spike dry weights were increased, whereas leaf dry weight was decreased between anthesis and maturity. N application significantly increased all plant parts of Siberian wildrye dry weight and seed weight compared with 0 kg N ha(-1) application. The half-spike treatment increased seed weight and seed setting rate across all N levels, and stem dry weight accumulation, but there was no significant influence on N translocation. The results of this study indicate that Siberian wildrye seed yield is source limited since seed weight and seed setting rate were increased in the half-spike treatment with N application. Stem dry weight increased after anthesis suggesting that stems were sinks and competed for assimilates with spikes. Therefore, breeding for increased photosynthesis and partitioning of assimilates from stems to spikes may result in increased and more consistent seed yield. |
| 学科主题 | Agronomy |
| 出版地 | AMSTERDAM |
| 电子版国际标准刊号 | 1872-6852 |
| WOS关键词 | SOURCE-SINK RELATIONS ; LOLIUM-PERENNE L ; DRY-MATTER ; ELYMUS-SIBIRICUS ; P FERTILIZATION ; USE EFFICIENCY ; GRAIN WEIGHT ; NITROGEN ; WHEAT ; BARLEY |
| 语种 | 英语 |
| WOS记录号 | WOS:000427208600003 |
| 出版者 | ELSEVIER SCIENCE BV |
| 资助机构 | fund for the China Agriculture Research System [CARS-35] ; fund for Beijing Common Construction Project ; National Key Technologies R&D Program of the 12th Five-Year Plan [2011BAD17801-02] |
| 源URL | [http://ir.ibcas.ac.cn/handle/2S10CLM1/20644]  |
| 专题 | 植被与环境变化国家重点实验室 |
| 作者单位 | 1.Shanxi Agr Univ, Coll Anim Sci & Vet Med, Taigu 030801, Shanxi, Peoples R China 2.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China 3.China Agr Univ, Forage Seed Lab, Beijing Key Lab Grassland Sci, Beijing 100193, Peoples R China 4.Hannaway, David B.] Oregon State Univ, Dept Crop & Soil Sci, Corvallis, OR 97331 USA |
| 推荐引用方式 GB/T 7714 | Wang, Mingya,Hou, Longyu,Zhu, Yanqiao,et al. Siberian wildrye seed yield limited by assimilate source[J]. FIELD CROPS RESEARCH,2018,218:18-23. |
| APA | Wang, Mingya.,Hou, Longyu.,Zhu, Yanqiao.,Zhang, Qiang.,Wang, Hui.,...&Hannaway, David B..(2018).Siberian wildrye seed yield limited by assimilate source.FIELD CROPS RESEARCH,218,18-23. |
| MLA | Wang, Mingya,et al."Siberian wildrye seed yield limited by assimilate source".FIELD CROPS RESEARCH 218(2018):18-23. |
入库方式： OAI收割
来源：植物研究所
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