湖北农业科学 ›› 2019, Vol. 58 ›› Issue (24): 124-127.doi: 10.14088/j.cnki.issn0439-8114.2019.24.030

• 园艺·特产 • 上一篇    下一篇

两种彩叶桂花新品种光合特性的比较研究

周勇辉1, 刘小平1, 罗素梅1, 赖金莉1, 陶秀花2   

  1. 1.赣州市花卉研究所,江西 赣州 341404;
    2.江西省农业科学院蔬菜花卉研究所,南昌 330200
  • 收稿日期:2019-09-10 出版日期:2019-12-25 发布日期:2019-12-25
  • 通讯作者: 陶秀花(1969-),女,高级农艺师,硕士,主要从事园林植物栽培与应用研究,(电子信箱)taoxiu@sohu.com。
  • 作者简介:周勇辉(1990-),男,江西临川人,助理农艺师,硕士,主要从事园林植物应用研究,(电话)17746670675(电子信箱)zyh243706797@163.com
  • 基金资助:
    江西省科技计划项目(20161BBF60032); 江西省现代农业产业技术体系建设专项(JXARS-17)

Comparative study on photosynthetic characteristics of two new varieties of colored leaves Osmanthus fragrans L.

ZHOU Yong-hui1, LIU Xiao-ping1, LUO Su-mei1, LAI Jin-li1, TAO Xiu-hua2   

  1. 1.Flower Research Institute of Ganzhou City,Ganzhou 341404,Jiangxi,China;
    2.Institute of Vegetable and Flower,Jiangxi Academy of Agricultural Sciences,Nanchang 330200,China
  • Received:2019-09-10 Online:2019-12-25 Published:2019-12-25

摘要: 为了探讨2个彩叶桂花(Osmanthus fragrans L.)新品种(虔南桂妃、紫嫣公主)需光特性,测定4个不同桂花品种生长高峰期的光响应曲线。通过相关分析,探讨4种桂花净光合速率(Pn)。结果表明,各桂花品种净光合速率随光合有效辐射(PAR)的增加而迅速增加,在PAR>200 μmol/(m2·s)时逐渐稳定。净光合速率日变化的影响因子存在显著差异。两个彩叶桂花新品种的光饱和点(LSP)、光补偿点(LCP)与其他2个桂花品种的相比较低,弱光利用效率也较强,具有较好的耐阴性。

关键词: 桂花(Osmanthus fragrans L.), 虔南桂妃, 紫嫣公主, 光合特性

Abstract: In order to explore the light characteristics of two new varieties of colored leaves Osmanthus fragrans L. (Qiannan guifei and Ziyan princess), the light response curves of growth peak of 4 different Osmanthus fragrans L. cultivars were measured. The net photosynthetic rate(Pn) of Osmanthus fragrans L. was studied by correlation analysis. The results showed that the net Pn of all osmanthus species increased rapidly with the increase of photosynthetically active radiation(PAR). It stabilized at PAR>200 μmol/(m2·s). There were significant differences in the factors affecting the diurnal variation of net photosynthetic rate. The light saturation point (LSP) and light compensation point (LCP) of two new varieties of sweet-scented Osmanthus fragrans L. were lower than those of the other two varieties, low light utilization efficiency is also stronger, with better shade tolerance.

Key words: Osmanthus fragrans L., Qiannan guifei, Ziyan princess, photosynthetic characteristics

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