|Table of Contents|

The Photosynthetic Characteristics of Different Organs of Phalaenopsis pulcherrima

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2020年02
Page:
80-86
Research Field:
Publishing date:

Info

Title:
The Photosynthetic Characteristics of Different Organs of Phalaenopsis pulcherrima
Author(s):
JIU FengfengBU XianpanCHEN CaizhiWANG FengtangYANG Fusun
(College of Tropical Crop,Hainan University,Haikou,Hainan 570228)
Keywords:
Phalaenopsis pulcherrimaphotosynthetic organpseudobulb
PACS:
-
DOI:
10.11937/bfyy.20191267
Abstract:
In order to clarify the photosynthesis organs of Phalaenopsis pulcherrima,and explore the photosynthetic physiological characteristics of different organs,the three-year-old Phalaenopsis pulcherrima tissue culture seedlings were used as experimental materials to study the photosynthetic fluorescence characteristics of different organs such as lips,sepals,petals,roots,pseudobulbs and leaves.The results showed that there were stomata distribution on the back of the lips of Phalaenopsis pulcherrima and the stomatal density was significantly lower than that of the leaves.The chlorophyll content of different organs of Phalaenopsis pulcherrima was leaf>root>pseudobulb>lip>sepal>petal,and the roots was 31.2% of the leaves,the pseudobulbs was 21.3% of the leaves.The chlorophyll a/b values were all lower than 2.1,and the roots,pseudobulbs and lips were 2.047,1.991 and 0.458,respectively.There was no fluorescence value in the flower parts of Phalaenopsis pulcherrima,and the actual photon quantum efficiency curve[Y(II)],electron transport rate curve (ETR),photochemical quenching coefficient curve (qP) and non-photochemical quenching coefficient curve (NPQ) of the leaves were higher than those of the pseudobulbs,and there was no significant difference in Fv/Fm.According to the comprehensive analysis,the leaves,pseudobulbs,roots and lips of Phalaenopsis pulcherrima could be used for photosynthesis to provide nutrients for plant growth.The leaves were the main photosynthetic organs of Phalaenopsis pulcherrima,the pseudobulbs and roots were the auxiliary organs for photosynthesis,and the lips had better ability to utilize low light.

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Last Update: 2020-02-23