Drought and heat stress reduce yield and alter carbon rhizodeposition of different wheat genotypes
文献类型：期刊论文
| 作者 | Yin, Liming1; Bakhshandeh, Shiva2; Corneo, Paola E.2; Dijkstra, Feike A.2 |
| 刊名 | JOURNAL OF AGRONOMY AND CROP SCIENCE
 |
| 出版日期 | 2019-04-01 |
| 卷号 | 205期号:2页码:157-167 |
| 关键词 | drought plant-microbe interactions rhizodeposition root traits temperature wheat yield |
| ISSN号 | 0931-2250 |
| DOI | 10.1111/jac.12314 |
| 英文摘要 | Drought and high temperature are major environmental stress factors threatening wheat production during grain filling stage resulting in substantial yield losses. Four wheat genotypes (Suntop, IAW2013, Scout and 249) were planted under two temperature levels (25 and 30 degrees C) and two water levels (15% and 25% soil moisture content). Wheat yield, leaf delta C-13, plant rhizodeposition, shoot biomass and root traits were examined. Low moisture (drought stress) and high temperature (heat stress) decreased the grain yield of all wheat genotypes, in particular 249, while combined drought and temperature stresses had the most pronounced negative effect on plant biomass and grain yield. Decreasing soil water availability decreased the allocation of plant-derived C to soil organic carbon (SOC) and to microbial biomass through rhizodeposition. Leaf delta C-13 decreased with increased yield, suggesting that higher yielding genotypes were less water stressed and allocated less C to SOC and microbial biomass through rhizodeposition. Wheat genotypes with lower root/shoot ratios and thinner roots were more efficient at assimilating C to the grain, while genotypes with higher root/shoot ratios and thicker roots allocated more C belowground through rhizodeposition at the expense of producing higher yield. Therefore, improving these traits for enhanced C allocation to wheat grain under variable environmental conditions needs to be considered. |
| 资助项目 | Grains Research and Development Cooperation[US00061] |
| WOS研究方向 | Agriculture |
| 语种 | 英语 |
| WOS记录号 | WOS:000460766500004 |
| 出版者 | WILEY |
| 源URL | [http://210.72.129.5/handle/321005/123951]  |
| 专题 | 中国科学院沈阳应用生态研究所 |
| 通讯作者 | Bakhshandeh, Shiva |
| 作者单位 | 1.Chinese Acad Sci, Inst Appl Ecol, Shenyang, Liaoning, Peoples R China 2.Univ Sydney, Sydney Inst Agr, Sch Life & Environm Sci, Sydney, NSW, Australia |
| 推荐引用方式 GB/T 7714 | Yin, Liming,Bakhshandeh, Shiva,Corneo, Paola E.,et al. Drought and heat stress reduce yield and alter carbon rhizodeposition of different wheat genotypes[J]. JOURNAL OF AGRONOMY AND CROP SCIENCE,2019,205(2):157-167. |
| APA | Yin, Liming,Bakhshandeh, Shiva,Corneo, Paola E.,&Dijkstra, Feike A..(2019).Drought and heat stress reduce yield and alter carbon rhizodeposition of different wheat genotypes.JOURNAL OF AGRONOMY AND CROP SCIENCE,205(2),157-167. |
| MLA | Yin, Liming,et al."Drought and heat stress reduce yield and alter carbon rhizodeposition of different wheat genotypes".JOURNAL OF AGRONOMY AND CROP SCIENCE 205.2(2019):157-167. |
入库方式： OAI收割
来源：沈阳应用生态研究所
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