Sugarcane leaf photosynthetic light responses and their difference between varieties under high temperature stress
文献类型： 外文期刊
作者： Liu, Y. Y. 1 ; Li, J. 1 ; Liu, S. C. 3 ; Yu, Q. 4 ; Tong, X. J. 6 ; Zhu, T. T. 1 ; Gao, X. X. 3 ; Yu, L. X. 7 ;
作者机构： 1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing 100101, Peoples R China
2.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China
3.Yunnan Acad Agr Sci, Sugarcane Res Inst, Kaiyuan 661600, Yunnan, Peoples R China
4.Northwest Agr & Forestry Univ, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China
5.Univ Technol Sydney, Sch Life Sci, Sydney, NSW 2007, Australia
6.Beijing Forestry Univ, Coll Forestry, Beijing 100083, Peoples R China
7.Yunnan Climate Ctr, Kunming 650034, Yunnan, Peoples R China
关键词： dark respiration rate; light-compensation point; light-saturation point; maximum gross photosynthetic rate
期刊名称：PHOTOSYNTHETICA （ 影响因子：3.189； 五年影响因子：3.38 ）
ISSN： 0300-3604
年卷期： 2020 年 58 卷 4 期
页码：
收录情况： SCI
摘要： Leaf photosynthetic light response (PLR) of six sugarcane (Saccharum officinarum L.) varieties with a high sugar content was measured in the field. PLR curves were fitted by the rectangular hyperbola (RH) model, the nonrectangular hyperbola (NRH) model, and the Ye model, respectively. Photoinhibition occurred under warm and humid environment for all tested sugarcane varieties except for GT02-467 with the photosynthetic rate reduced significantly. The Ye model was the best for PLR curve fitting, especially when photoinhibition occurred. Nearly all PLR parameters estimated by the Ye model were better than the other two models. Some PLR parameters correlated with each other. A significant negative correlation was found between the photoinhibition coefficient and the photosaturation coefficient. The varieties with high light-use efficiency (e.g., YZ99-91 and YZ01-1413) are suitable for dense planting under warming climate, while the varieties with strong ability for dim light use (e.g., GT02-467 and MT69-421) would be appropriate for planting at a high density under warming and dimming climate in the future.
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