|Table of Contents|

Plant Growth and Photosynthesis of Grafted Cucumber in Greenhouse Under Sub-High Temperature and Elevated CO2 in Short Term Daytime(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2016年15
Page:
50-54
Research Field:
Publishing date:

Info

Title:
Plant Growth and Photosynthesis of Grafted Cucumber in Greenhouse Under Sub-High Temperature and Elevated CO2 in Short Term Daytime
Author(s):
LIU Jinquan; YAN Hai’ou; ZHANG Qingmei; HOU Jia
（College of Vocational and Technical，Inner Mongolia Agricultural University，Baotou，Inner Mongolia 014109）
Keywords:
grafted cucumber; CO2 enrichment; sub-high temperature; growth; photosynthetic rate
PACS:
-
DOI:
10.11937/bfyy.201615013
Abstract:
In this experiment，grafted cucumber was used as the test material.There were 3 treatments，including sub-high temperature，sub-high temperature+CO2，normal temperature+CO2 and taking normal temperature as CK.In order to provide theoretical basis for the reasonable application of CO2 and control temperature in the facility cultivation，the effect of rich and short term daytime sub-high temperature CO2 of grafted cucumber plant growth，yield and photosynthesis was studied.The results showed that the plant height，stem diameter，growth rate and yield of grafted cucumber were significantly influenced in different treatment time.In the plant height，stem diameter，single melon growth rate，single fruit diameter growth rate and yield，the treatment of sub-high temperature+CO2 were significantly higher than that of CK，respectively was 37%，19%，15%，21% and 38% after 25 days.Excepting of single fruit growth speed and diameter growth rate，the treatment of normal temperature+CO2 was significantly lower than high temperature+CO2.The treatment of normal temperature+CO2 was significantly higher than those of the sub-high temperature and CK.The photosynthetic rate of sub-high temperature+CO2，normal temperature+CO2 and CK showed a double peak curve，the peak respectively at 10：00 and 14:00.At 10：00，the photosynthetic rate was sub-high temperature+CO2>normal temperature+CO2>CK>sub-high temperature.The diurnal variation of photosynthetic rate under sub-high temperature showed a single peak curve.The diurnal variation of transpiration rate showed the trend of first increasing and then decreasing，reaching the highest value at 12:00,and the transpiration rate was CO2+sub-high temperature>CO2+normal temperature>sub-high temperature>CK.The intercellular CO2 concentration of cucumber leaves under all the tearments decreased firstly and then increased，then decreased and then increased with the trend of ‘W’.

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Last Update: 2016-08-26