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园艺学报 ›› 2004, Vol. 31 ›› Issue (4): 482-486.

• 研究论文 • 上一篇    下一篇

4种野生报春花光合作用特性的比较

刘飞虎;梁雪妮;刘小莉   

  1. 云南大学生命科学学院,昆明650091; 云南大学成人教育学院,昆明65009
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2004-08-25 发布日期:2004-08-25
  • 通讯作者: 刘飞虎

Comparison of the Photosynthetic Characteristics in Four W ild Primula Species

Liu Feihu;Liang Xueni;Liu Xiaoli   

  1. ( Life Science College, Adults Education College,Yunnan University,Kunming 65009 1,China)
  • Received:1900-01-01 Revised:1900-01-01 Online:2004-08-25 Published:2004-08-25

摘要: 采用LI-6400便携式光合作用系统分析了昆明露地栽培的4种野生报春花(3年生)光合作用
特性。光补偿点以粉背灯台报春最高(28 p~mol·m一·s ),其余3种相近且较低(8~15 p~mol’m一’
s )。光饱和点以四季报春最低(80 p~mol·m一·s ),其光合速率也最低,两种灯台报春的光饱和点
(500 tool·m~ ·s )和光合速率均最高,灰岩报春居中。光合作用co 补偿点灰岩报春、桔红灯台报
春、粉背灯台报春和四季报春分别为54,64,69和80 p,mol·tool‘。。5月份的光合速率和蒸腾速率日变化
均呈单峰曲线,前者的峰值出现在10时左右,后者的峰值出现在13时左右;曲线高低体现出种间差异。

关键词: 报春花, 光合作用, 光合速率, 补偿点, 饱和点

Abstract:

P1ants of four wild Pr/mula species were planted in the field at Kunming and the photosynthesis
was tested with LI-6400 portable photosynthesis system for adding knowledge of photosynthesis to the wild
Pnm~a species.Species diference Was found in light compensation point(IJCP,txmol’m一’s ),light
saturation point(LSP,p,mol·m一。s )and CO2 compensation point(CCP,C02p,mol·mol )of photosynthesis.
Pr/mula pulverulenta Duthie had the highest LCP(28),the other three species had lower LCP(8—1 5).
P obconica Hance had both lOW I5P(80)and photosynthetic rate(Pn),and highest CCP(80).P bulleyana
Fort.and P.pulverulenta showed both the highest I5P(500)and Pn.and intermediate CCP(64—69),while
P forrestii Balf.f.had middle LSP and Pn.but the lowest CCP(54).The diurnal changes of Pn and transpi—
ration rate(Tr)in May were one.peaked curves.reaching a maximum at about 10 and 13 O’clock for Pn and
Tr.respectively.The species differences were exhibited by curve height of their diurnal courses

Key words: Primula, Photosynthesis, Compensation point, Saturation point, Photosynthetic rate