[1]杨华,宋绪忠.低海拔区2 种光照强度对猴头杜鹃光合特性的影响[J].浙江林业科技,2018,38(03):24-29.[doi:10.3969/j.issn.1001-3776.2018.03.004]
 YANG Hua,SONG Xu-zhong.Effects of Different Illumination Intensity on Photosynthetic Properties of Rhododendron simiarum at Low Altitude[J].Journal of Zhejiang Forestry Science and Technology,2018,38(03):24-29.[doi:10.3969/j.issn.1001-3776.2018.03.004]
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低海拔区2 种光照强度对猴头杜鹃光合特性的影响()
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《浙江林业科技》[ISSN:1001-3776/CN:33-1112/S]

卷:
38
期数:
2018年03期
页码:
24-29
栏目:
出版日期:
2018-07-30

文章信息/Info

Title:
Effects of Different Illumination Intensity on Photosynthetic Properties of Rhododendron simiarum at Low Altitude
作者:
杨华宋绪忠
浙江省林业科学研究院,浙江 杭州 310023
Author(s):
YANG HuaSONG Xu-zhong
Zhejiang Academy of Forestry, Hangzhou 310023, China
关键词:
猴头杜鹃遮荫光合特性光照
Keywords:
Rhododendron simiarum shade photosynthesis illumination
分类号:
S718.5
DOI:
10.3969/j.issn.1001-3776.2018.03.004
文献标志码:
A
摘要:
利用LI-6400 便携式光合作用仪对10%光照和全光照下低海拔生长的猴头杜鹃Rhododendron simiarum 的光 合特性进行测定。光响应曲线分析结果显示,净光合速率表现为10%光照>全光照,夏季在低海拔环境下猴头杜 鹃适应遮荫的环境;10%光照下生长的猴头杜鹃蒸腾速率明显低于全光照下生长的猴头杜鹃,水分利用效率明显 高于全光照下生长的猴头杜鹃;10%光照下生长的猴头杜鹃有利于干物质的积累;2 种光照强度下的猴头杜鹃净光合 速率、蒸腾速率、气孔导度日变化均表现为“单峰”型;气孔限制值与胞间CO2 浓度的日变化表现为“双峰”型。
Abstract:
In March of 2015, 10 young Rhododendron simiarum trees were transplanted as potted culture from Songyang(altitude: 1 000 m) of Zhejiang province to Zhejiang Academy of Forestry (altitude: 24 m). In May of 2016, treatments of 10% of illumination and full exposure were carried out on 5 trees each. In July of 2016, determinations were implemented on their photosynthetic properties by LI-6400. The results showed that net photosynthetic rate(Pn) of R. simiarum trees under 10% illumination was higher than that under full exposure, indicating more adaptive to low light intensity at low altitude in the summer. Transpiration rate(Tr) of trees under 10% illumination was lower than that under full exposure, but water use efficency(WUE) was the opposite. R. simiarum under 10% light had more accumulation of dry matter. The diurnal variation of Pn, Tr and Gs was single-peak curve, but Ls and Ci had double-peak curve.

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备注/Memo

备注/Memo:
收稿日期:2017-12-26;修回日期:2018-04-23 基金项目:浙江省林木新品种选育重大科技专项“特色优势木本花卉资源保育与种质创新”(2016C02056-12) 作者简介:杨华,副研究员,博士,从事植物遗传育种研究;E-mail:ynpsta@126.com。
更新日期/Last Update: 2018-08-22