牡丹开花前后碳水化合物的分配与光合速率的关系

园艺学报 ›› 2007, Vol. 34 ›› Issue (1): 153-156.

牡丹开花前后碳水化合物的分配与光合速率的关系

丰亚南¹ ; 郑国生^1,2 ; 王宗正¹ ; 高辉远^1*

(¹ 山东农业大学生命科学学院, 山东泰安271018; ² 莱阳农学院, 山东青岛266109)

收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2007-02-25 发布日期:2007-02-25

Relationship Between Carbohydrate Allocation and Photosynthesis DuringFlorescence and Flower Senescence Period in Tree Peony

FENG Ya-nan¹ ;ZHENG Guo-sheng^1,2 ; WANG Zong-zheng¹ ; GAO Hui-yuan^1*

(¹ Life Sciences College, Shandong Agricultural University, Taipan, Shandong 271018, China; ² Laiyang Agricultural College,Qingdao, Shandong 266109, China )

Received:1900-01-01 Revised:1900-01-01 Online:2007-02-25 Published:2007-02-25

摘要/Abstract

摘要： 以牡丹( Paeonia suffruticosa ) 品种‘肉芙蓉’为材料, 研究其开花过程中碳水化合物的分配
及其对有花枝上叶片( FL) 与无花枝上叶片(NFL) 净光合速率( Pn) 的影响。结果表明: 在花衰败前,
有花枝Pn明显低于无花枝, 但可溶性糖含量却高于无花枝。与前一天17时相比, 经过一夜消耗后, 早晨
8时有花枝可溶性糖含量没有显著差别, 而无花枝的则较低, 说明除光合作用外, 还有其他途径为有花枝
提供可溶性糖。花衰败后, 两种枝叶Pn和可溶性糖含量的差异逐渐消失。与花衰败前不同, 经过一夜消耗
后, 早晨8时两种枝叶的可溶性糖含量比前一天17时都降低, 表明为有花枝提供可溶性糖的其他途径在花
衰败后停止工作, 推测这一途径极可能与花的生长发育有密切联系。

关键词: 牡丹, 开花, 碳水化合物, 光合速率

Abstract: Gas exchange, chlorophyll fluorescence and bio2analysis were used to study the influence of
carbohydrate allocation on net photosynthetic rate in leaves of tree peony ( Paeonia suffruticosa ‘Rou Furong’)
brancheswith and without flower. The results showed that before flower senescence, the net photosynthetic
rate in leaves on brancheswith flower ( FL) was lower than that in leaves on brancheswithout flower (NFL).
Whereas the total soluble sugar content was higher in the FL than that in the NFL. Compared with that at
17∶00 on the p revious day, after a night consump tion, the total soluble sugar content in the NFL decreased
obviously at 8 ∶00 a1m. while that in the FL hardly changed. These results indicate that there were other
sources to supp ly soluble sugar in FL besides photosynthesis during the florescence period. After flower senes
cence, differences in net photosynthetic rate and total soluble sugar content between the NFL and the FL dis
appeared gradually, and the total soluble sugar content in both the FL and the NFL was lower at 8: 00 a. m.
than that at 17∶00 on the p revious day, which suggest that the other sourcesmentioned above did notwork to
supp ly carbohydrates to the leaves any more. It is speculated that thismetabolic pathway might be correlated
with flower growth.

Key words: Tree peony, Anthesis, Carbohydrate, Photosynthetic rate

丰亚南;郑国生;;王宗正;高辉远. 牡丹开花前后碳水化合物的分配与光合速率的关系[J]. 园艺学报, 2007, 34(1): 153-156.

FENG Ya-nan;ZHENG Guo-sheng;;WANG Zong-zheng;GAO Hui-yuan. Relationship Between Carbohydrate Allocation and Photosynthesis DuringFlorescence and Flower Senescence Period in Tree Peony[J]. ACTA HORTICULTURAE SINICA, 2007, 34(1): 153-156.

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