| 流苏树的应用及绿化价值探讨 |
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| 引用本文： | 靳超, 马天晓, 李成哲, 等. 早花流苏品种春雪的光合特性研究[J]. 云南农业大学学报（自然科学）, 2022, 37(4): 648-654. DOI: 10.12101/j.issn.1004-390X(n).202201036 |
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| 作者姓名： | 靳超 马天晓 李成哲 朱秀征 李鹏程 王艳梅 |
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| 作者单位： | 1.河南农业大学 林学院，河南 郑州 450002;2.信阳农林学院 林学院，河南 信阳 464000;3.铁岭市自然资源事务服务中心，辽宁 铁岭 112000 |
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| 基金项目： | 国家林业与草原局林业科技发展项目(KJZXSA2019044)。 |
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| 摘 要： | 目的研究早花流苏品种春雪与普通流苏的光合特性，为良种栽培以及推广利用提供理论依据。方法以早花流苏春雪为研究对象，并以相同条件下生长的普通流苏为对照，利用LCpro-SD便携式光合仪分别测定两者在5—10月的净光合速率(Pn)、胞间CO2浓度(Ci)、气孔导度(Gs)、蒸腾速率(Tr)以及光响应曲线。结果早花流苏春雪和普通流苏的Pn分别于5月和7月达到最大值，分别为22.11和20.30 μmol/(m2·s)；5—10月中，早花流苏春雪的Pn整体高于普通流苏；早花流苏春雪8月和普通流苏7、8月的Pn均呈双峰型曲线，并伴随有光合午休现象，其余月份均为单峰型曲线。2种流苏的Ci日变化均呈先下降再上升的趋势；Gs日变化整体呈降低的趋势；Tr日变化均表现为先下降后上升再下降的趋势。5—10月早花流苏春雪与普通流苏的最低光补偿点分别为21.87和24.95 μmol/(m2·s)，最大光饱和点分别为1531.22和1450.77 μmol/(m2·s)。结论在相同环境条件下，早花流苏春雪对光强的适应性比普通流苏更强，更适合在光照强的地区栽植。
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| 关 键 词： | 早花流苏春雪 普通流苏 光合特性 光响应曲线 |
| 收稿时间： | 2022-01-29 |
| 修稿时间： | 2022-06-11 |
Flavonoids from Chionanthus retusus (Oleaceae) flowers and their protective effects against glutamate-induced cell toxicity in HT22 cells |
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| Chao JIN, Tianxiao MA, Chengzhe LI, et al. Study on the Photosynthetic Characteristics of Early Flowering Chionanthus retusus Variety ‘Chunxue’[J]. JOURNAL OF YUNNAN AGRICULTURAL UNIVERSITY（Natural Science）, 2022, 37(4): 648-654. DOI: 10.12101/j.issn.1004-390X(n).202201036 |
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| Authors: | Chao JIN Tianxiao MA Chengzhe LI Xiuzheng ZHU Pengcheng LI Yanmei WANG |
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| Affiliation: | 1.College of Forestry of Henan Agricultural University, Zhengzhou 450002, China;2.College of Forestry of Xinyang Agricultural and Forestry University, Xinyang 464000, China;3.Tieling Natural Resources Affairs Service Center, Tieling 112000, China |
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| Abstract: | PurposeTo study the photosynthetic characteristics of early flowering Chionanthus retusus ‘Chunxue’ and common C. retusus, providing a theoretical basis for improving variety cultivation and utilization. MethodTaking the early flowering C. retusus ‘Chunxue’ as the research object, and the common C. retusus growing under the same conditions as the control. The net photosynthetic rate (Pn), intercellular CO2 concentration (Ci), stomatal conductance (Gs), transpiration rate (Tr) and light response curve of the two C. retusus from May to October were measured by LCpro-SD portable photosynthetic instrument. ResultsThe Pn of early flowering C. retusus ‘Chunxue’ and common C. retusus reached the maximum value in May and July, with the value of 22.11 and 20.30 μmol/(m2·s), respectively. From May to October, the Pn of early flowering C. retusus ‘Chunxue’ was larger than that of common C. retusus, the Pn of early flowering C. retusus ‘Chunxue’ in August and common C. retusus in July and August showed a bimodal curve, accompanied by photosynthetic lunch break; and the other months were single peak curve. The diurnal variation of Ci of the two C. retusus decreased first and then increased, the diurnal variation of Gs decreased in general, and the diurnal variation of Tr decreased first and then increased and decreased again. The minimum light compensation of early flowering C. retusus ‘Chunxue’ and common C. retusus from May to October were 21.87 and 24.95 μmol/(m2·s), the maximum light saturation points were 1531.22 and 1450.77 μmol/(m2·s), respectively. ConclusionUnder the same environmental conditions, early flowering C. retusus ‘Chunxue’ has stronger adaptability to light intensity than common C. retusus, and it is more suitable for planting in areas with strong light. |
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| Keywords: | early flowering Chionanthus retusus ‘Chunxue ’ common Chionanthus retusus photosynthetic characteristics light response curve |
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