A novel light interception trait of a hybrid rice ideotype indicative of leaf to panicle ratio
文献类型：期刊论文
| 作者 | Xiao, Feng; Li, Weiwei; Xiao, Minghui; Yang, Zongfeng; Cheng, Wangda5; Gao, Shang1; Li, Ganghua; Ding, Yanfeng; Paul, Matthew J.; Liu, Zhenghui3 |
| 刊名 | FIELD CROPS RESEARCH
 |
| 出版日期 | 2021 |
| 卷号 | 274 |
| 关键词 | Ideotype Leaf to panicle ratio Light interception Rice breeding Dynamic canopy light interception simulating device |
| ISSN号 | 0378-4290 |
| DOI | 10.1016/j.fcr.2021.108338 |
| 文献子类 | Article |
| 英文摘要 | One of the major challenges facing rice breeding is to produce ideotype or ideal plant architecture (IPA) to improve canopy radiation use efficiency and hence grain yield. The hybrid japonica rice Jiayou Zhongke 6 (JYZK6) is one of the benchmark cultivars with IPA characteristics, but the physio-ecological foundation of its high yield potential is still imperfectly understood. In this study, two-year field experiments were conducted using four japonica rice cultivars including JYZK-6 with contrasting canopy structures. A dynamic canopy light interception simulating device was constructed to capture canopy images representing the diurnal dynamics of solar angles throughout the grain-filling stage. Subsequently, leaf to panicle ratio (LPR), a newly developed physiological trait indicative of source-sink relations, was exploited to quantify the light distribution pattern within the rice canopy. The LPRs with high spatio-temporal resolution clearly showed the diurnal changes of light interception within the rice canopy. Genotypic differences in diurnal pattern of LPR were detected among the tested cultivars in both growing seasons, with the amplitude varying with grain-filling stages. Notably, LPR of the IPA cultivar JYZK-6 and its analogue WYJ-29, had a pattern of a V-shaped graph, peaking at sunrise and sunset while dropping to the lowest at noon during middle and late stages. Morphological measurement showed that the V-shaped pattern was associated with the height difference between flag leaf and panicle, panicle curvature, ratio of leaf area to panicle area, as well as the changing solar angles along with the progression of growth stage. This distinguishing feature of light pattern indicates that within the canopy of IPA cultivars, the leaf receives more light in the morning and afternoon whereas the panicle harvests more light at noon. It is inferred that such novel characteristics may provide the IPA cultivar with advantages of reducing midday suppression over the conventional cultivars, while more work is needed to verify this hypothesis. In summary, findings of this study offer a deeper insight into the physio-ecological processes underpinning radiation use efficiency at canopy level, and hence are valuable for breeding programs for ideotype cultivars. |
| 学科主题 | Agronomy |
| 出版地 | AMSTERDAM |
| 电子版国际标准刊号 | 1872-6852 |
| WOS关键词 | WATER-USE EFFICIENCY ; PHOTOSYNTHESIS ; SHOOT |
| WOS研究方向 | Science Citation Index Expanded (SCI-EXPANDED) |
| 语种 | 英语 |
| WOS记录号 | WOS:000714430200002 |
| 出版者 | ELSEVIER |
| 资助机构 | National Key R&D Program, Ministry of Science and Technology, China [2017YFD0300103] ; National Natural Science Foundation of China [31771719] ; National High Technology Research and Development Program of China [2014AA10A605] ; Biological and Biotechnological Sciences Research Council of the United Kingdom ; Designing Future Wheat Strategic Programme [BB/P016855/1] |
| 源URL | [http://ir.ibcas.ac.cn/handle/2S10CLM1/26623]  |
| 专题 | 植被与环境变化国家重点实验室 |
| 作者单位 | 1.Jiaxing Acad Agr Sci, Jiaxing 314016, Peoples R China 2.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China 3.Paul, Matthew J.] Rothamsted Res, Plant Sci, Harpenden AL5 2JQ, AL, England 4.Nanjing Agr Univ, Collaborat Innovat Ctr Modern Crop Prod, Nanjing 210095, Peoples R China 5.Nanjing Agr Univ, Coll Agr, Nanjing 210095, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xiao, Feng,Li, Weiwei,Xiao, Minghui,et al. A novel light interception trait of a hybrid rice ideotype indicative of leaf to panicle ratio[J]. FIELD CROPS RESEARCH,2021,274. |
| APA | Xiao, Feng.,Li, Weiwei.,Xiao, Minghui.,Yang, Zongfeng.,Cheng, Wangda.,...&Liu, Zhenghui.(2021).A novel light interception trait of a hybrid rice ideotype indicative of leaf to panicle ratio.FIELD CROPS RESEARCH,274. |
| MLA | Xiao, Feng,et al."A novel light interception trait of a hybrid rice ideotype indicative of leaf to panicle ratio".FIELD CROPS RESEARCH 274(2021). |
入库方式： OAI收割
来源：植物研究所
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